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Potato Variety Trials 2008
Clinton C. Shock, Erik Feibert, and Lamont D. Saunders
Malheur Experiment Station
Oregon State University
Ontario, OR
Introduction
New potato varieties were evaluated for their productivity and suitability for processing. Potatoes in Malheur County are grown under contract for processors to make frozen potato products for the food service industry and grocery chain stores. There is very little production for fresh pack or open market, and very few growers store potatoes on their farms. There is also no production of varieties for making potato chips.
The varieties grown for processing in Malheur County, Oregon, are mainly 'Ranger Russet', 'Shepody', and 'Russet Burbank'. Harvest begins in July and potatoes arrive at processing plants directly from the field. Yield of harvests later than mid-August may be limited by the "early die" syndrome, which causes early senescence of the vines of susceptible varieties, especially Shepody and Russet Burbank. Early die is caused by a complex of soil pathogens, including bacteria, nematodes, and fungi, particularly Verticillium wilt. Early die is worse when the rotation between potato crops is shorter.
Small acreages of new varieties or advanced selections are sometimes grown under contract to study the feasibility of expanding their use. To displace an existing processing variety, a new potato variety must have several outstanding characteristics. The yield should be at least as high as the yield of the currently contracted varieties. The tubers need to have low reducing sugars for light fry color, and high specific gravity. A new variety should be resistant to tuber defects or deformities caused by disease, water stress, or heat. It should begin tuber bulking early and grow rapidly for early harvest. Late-harvest varieties should be resistant to early die to continue bulking tubers until harvest.
Potato variety development trials at the Malheur Experiment Station in 2008 included the Western Region Russet Trial with 13 entries, the Oregon Statewide Russet Trial with 23 entries, the Preliminary Russet Yield Trial with 77 entries, the Western Region Specialty Trial of 22 colored skin and/or flesh potato varieties, and the Oregon Specialty Trial of 12 colored skin and/or flesh potato varieties. Through these trials and active cooperation with other scientists in Idaho, Oregon, and Washington, promising new lines are bred and evaluated. Eventually, the best of them may be released as new varieties.
Materials and Methods
The potato variety trials were grown using sprinkler irrigation on Owyhee silt loam, where winter wheat was the previous crop and potato had not been grown for the past 7 years. A soil test taken in the fall of 2007 showed the need for 50 lb nitrogen (N)/acre, 46 lb sulfate (SO4)/acre, 100 lb/acre sulfur (S)/acre, 5 lb zinc (Zn)/acre, 6 lb manganese (Mn)/acre, and 2 lb boron (B)/acre. In the fall, fertilizer was applied and then the soil was fumigated with Telone® II at 25 gal/acre and was bedded on 36-inch row spacing.
Seed of all varieties was hand cut into 2-oz seed pieces and treated with Tops-MZ®plus Gaucho® dust and placed in storage to suberize. Potato seed pieces were planted in single row plots using a 2-row assist-feed planter with 9-inch seed spacing in 36-inch rows. Red potatoes were planted at the end of each plot as markers to separate the potato plots at harvest, except in the specialty trials where russet was used as the marker.
The following trials were planted on April 17: Western Region Russet and Oregon Statewide. The following trials were planted on April 18: Oregon Specialty, Preliminary Yield, and Western Regional Specialty. All trials, except the Preliminary Yield trial, had plots that were 30 seed pieces long with 4 replicates. The Preliminary Yield trial had plots that were 20 seed pieces long and 2 replicates.
After planting, hills were re-formed over the rows with a Lilliston rolling cultivator. Prowl H2O® at 0.95 lb ai/acre, Dual Magnum® at 1.3 lb ai/acre, and Buccaneer® at 2.0 lb ai/acre were applied as a tank mix for weed control on May 5. The herbicides were incorporated with sprinkler irrigation applying 0.56 inch of water. Matrix® at 0.38 oz ai/acre was applied on May 30 through the sprinkler system. Matrix was again applied through the sprinkler system at 0.25 oz ai/acre on June 19. Quadris-Opti® at 0.1lb and 1.0 lb ai/acre was applied for preventive control of fungal diseases on July 28.
Irrigation was applied 23 times, from May 30 to September 9, with scheduling based on seven Watermark soil moisture sensors Model 200SS connected to an Irrometer Monitor (Irrometer Co. Inc., Riverside, CA) and six Watermark granular matrix sensors (Irrometer Co., Riverside, CA) connected to an AM400 data logger (M.K. Hansen Co., Wenatchee, WA) that recorded soil water tension at seed-piece depth. Irrigations were managed to prevent the soil at the seed-piece depth from drying beyond 60 cb soil water tension. Crop evapotranspiration (ETc) was estimated by the U.S. Bureau of Reclamation using data from an AgriMet weather station on the Malheur Experiment Station (Fig. 1).
Fertilizer was applied based on petiole tests taken on June 19, July 3, and August 12. Fertilizer was injected into the sprinkler system during irrigation. A total of 100 lb N/acre, 20 lb phosphate (P2O5)/acre, 40 lb K/acre, 10 lb magnesium (Mg)/acre, 0.75 lb Zn/acre, 0.5 lb Mn/acre, 0.25 lb Cu/acre, and 0.45 lb B/acre was applied during the season.
The vines were flailed on September 17. Potatoes in the Western Region and Oregon Statewide Russet Trials were dug on September 23. Potatoes in the Preliminary Yield trial were dug on September 24. Potatoes in the Western Region and Oregon Specialty trials were dug on September 25. At each harvest, the potatoes in each plot were lifted with a two-row digger that laid the tubers back onto the soil in each row. Visual evaluations included observations of desirable traits, such as a high yield of large, smooth, uniformly shaped and sized, oblong to long, attractively russeted tubers, with shallow eyes evenly distributed over the tuber length. Notes were also taken of tuber defects such as growth cracks, knobs, curved or irregularly shaped tubers, pointed ends, stem-end decay, attached stolons, heat sprouts and chain tubers, folded bud ends, rough skin due to excessive russeting, pigmented eyes, or any other defect. A note was made for each plot to keep or discard the clone based on the overall appearance of the tubers.
Tubers were placed into burlap sacks and hauled to a barn where they were kept under tarps until grading. Tubers were graded by market class (U.S. No. 1 and U.S. No. 2) and weight (<4 oz, 4-6 oz, 6-12 oz, and >12 oz). Tubers were graded as U.S. No. 2 if any of the following conditions occurred: growth cracks, bottleneck shape, abnormally curved shape, or two or more knobs. A 20-tuber sample from each plot was placed into storage. The storage temperature was gradually reduced to 45°F. After 6 weeks, a 20-tuber sample from each plot (except the Specialty Trials) was evaluated for tuber quality traits for processing. Specific gravity was measured using the weight-in-air, weight-in-water method. Ten tubers per plot were cut lengthwise and the 10 center slices were fried for 3.5 min in 375°F soybean oil. Percent light reflectance was measured on the stem and bud ends of each slice using a Photovolt Reflectance Meter model 577 (Seradyn, Inc., Indianapolis, IN), with a green tristimulus filter, calibrated to read 0 percent light reflectance on the black standard cup and 73.6 percent light reflectance on the white porcelain standard plate.
Data from all trials were analyzed with the General Linear Models analysis of variance procedure in NCSS (Number Cruncher Statistical Systems, Kaysville, UT) using Fisher's protected LSD (least significant difference) for means separation at the 95 percent confidence level.
Results and Discussion
A total of 24.3 inches of irrigation water was applied from emergence on May 22 to vine flailing on September 17 (Fig. 1). Precipitation for the same period totaled 1.4 inches. Potato evapotranspiration for the same period totaled 30.3 inches.
Western Region Russet Trial
The clones with the highest total yields in the Western Regional Late Harvest Trial were 'PA99N2-1' with 785.4 cwt/acre, Russet Burbank with 724.3 cwt/acre, and 'A97066-42LB' with 703.5 cwt/acre (Table 1). The clones PA99N2-1, A97066-42LB, and 'CO98067-7RU' were among the clones with the highest U.S. No. 1 yields. Clones A97066-42LB, 'AO96141-3', and Ranger Russet were among the clones with the highest specific gravity. Clones AO96141-3, 'CO97087-2RU', and 'PA99N82-4' were among the clones with the lightest frying tubers. Russet Burbank produced significantly more U.S. No. 2 tubers than the other clones in this trial. Most of the clones and 'Russet Norkotah' had better visual appearance at harvest than Ranger Russet or Russet Burbank (Table 2).
Oregon Statewide Trial
'OR04057-2', 'AO98282-5', and 'AO02183-2' were among the clones with the highest total yields and U.S. No. 1 yields. The clones AO98282-5', 'OR04062-1', and 'AO96141-3' had specific gravity, a measure of tuber solids, among the highest in this trial. The clones 'AO02183-2', AO96141-3, and 'AO02118-2' were among the clones with the lightest fry color for processing (Table 3). Most of the clones and Russet Norkotah had better visual appearance at harvest than Ranger Russet or Russet Burbank (Table 4).
Colored Flesh Potato Trials
Potato tubers with red to yellow carotinoid or red, blue, and purple anthocyanin pigments are of interest because of the anti-oxidant properties of these pigments in human nutrition. Two trials tested specialty potato varieties in 2008: Western Region Specialty and Oregon Specialty.
Western Region Specialty Trial
In the Western Region Specialty Trial, 'POR02PG26-5', 'ATTX98500-2P/Y', and 'Purple Majesty' were among the clones with the highest total yield (Table 5). Clones 'OR00068-11', 'ATTX961014-1R/Y' and 'CO99045-1W/Y' were among the clones with the highest yield of 4- to 10-oz tubers. 'Dark Red Norland', 'Yukon Gold', and 'Red LaSoda' had more than 95 cwt/acre of tubers over 10 oz, which are considered cull tubers in the usual markets for specialty potatoes. Clones varied greatly in appearance and taste (Tables 6 and 7).
Oregon Specialty Potato Trial
The clone 'POR04PG01-2', 'OR04036-5', and 'POR03PG80-2' were among the clones with the highest total yield (Table 8). Yukon Gold and POR03PG80-2 had more than 100 cwt/acre of tubers over 10 oz. Promising clones with favorable yield, appearance, and taste (Tables 9 and 10) are being advanced to the Western Regional Specialty Trial.
Preliminary Russet Yield Trial
Of the 74 clones tested, 9 were selected for further testing (Table 11). Some of the varieties had significantly higher yield and grade and better processing quality than the three commercial varieties in the trial. Some of the clones and Russet Norkotah had better visual appearance at harvest than Ranger Russet or Russet Burbank (Table 12).
Table 1. Western Regional Russet Trial potato yield, grade, and processing quality, Malheur Experiment Station, Oregon State University, Ontario, OR, 2008.
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U.S. No. 1 |
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Average fry color, light reflectance |
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Variety |
Total yield |
Percent No. 1 |
Total |
>12 oz |
6-12 oz |
4-6 oz |
U.S. No. 2 |
Marketable |
<4 oz |
Cull |
Length/ width |
Specific gravity |
Sugar ends |
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cwt/acre |
% |
------------------------------------cwt/acre--------------------------------------- |
ratio |
g cm-3 |
------- % --------- |
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Ranger Russet |
670.0 |
87.1 |
584.4 |
193.9 |
271.2 |
119.2 |
67.0 |
651.4 |
16.1 |
2.5 |
1.89 |
1.1050 |
48.4 |
0.0 |
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Russet Burbank |
724.3 |
72.3 |
524.2 |
90.9 |
260.1 |
173.2 |
161.5 |
685.7 |
17.7 |
20.8 |
1.68 |
1.0864 |
43.2 |
0.0 |
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Russet Norkotah |
581.3 |
94.4 |
548.0 |
52.7 |
331.9 |
163.5 |
13.3 |
561.4 |
20.0 |
0.0 |
1.71 |
1.0794 |
43.3 |
2.5 |
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A0008-1TE |
604.4 |
94.8 |
572.9 |
65.9 |
354.3 |
152.7 |
15.4 |
588.3 |
14.9 |
1.2 |
1.76 |
1.0865 |
52.0 |
0.0 |
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A97066-42LB |
703.5 |
93.9 |
661.9 |
118.9 |
348.0 |
194.9 |
9.6 |
671.5 |
29.1 |
3.0 |
1.57 |
1.1088 |
49.1 |
0.0 |
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AC96052-1RU |
569.5 |
92.4 |
529.8 |
9.1 |
246.2 |
274.5 |
1.7 |
531.5 |
37.9 |
0.0 |
1.65 |
1.0963 |
51.7 |
0.0 |
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AO96141-3 |
645.7 |
93.9 |
607.1 |
26.0 |
318.5 |
262.6 |
9.4 |
616.5 |
28.7 |
0.5 |
1.92 |
1.1069 |
56.6 |
0.0 |
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AOTX95265-4Ru |
561.4 |
94.5 |
530.3 |
124.3 |
288.8 |
117.3 |
10.7 |
541.0 |
18.1 |
2.3 |
1.65 |
1.0761 |
42.3 |
0.0 |
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CO97087-2RU |
660.4 |
94.7 |
625.3 |
24.7 |
289.8 |
310.7 |
8.8 |
634.1 |
24.3 |
2.0 |
1.61 |
1.0987 |
53.6 |
0.0 |
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CO98067-7RU |
699.4 |
93.5 |
654.1 |
41.1 |
375.1 |
237.9 |
11.6 |
665.6 |
29.5 |
4.3 |
1.66 |
1.0795 |
40.8 |
0.0 |
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CO98368-2RU |
538.6 |
92.1 |
496.3 |
11.6 |
178.1 |
306.6 |
10.0 |
506.3 |
31.5 |
0.8 |
1.63 |
1.0930 |
45.6 |
0.0 |
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PA99N2-1 |
785.4 |
97.1 |
762.4 |
90.5 |
498.5 |
173.5 |
7.6 |
770.0 |
15.4 |
0.0 |
1.41 |
1.0975 |
49.3 |
0.0 |
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PA99N82-4 |
665.5 |
93.7 |
623.7 |
90.8 |
345.6 |
187.3 |
18.6 |
642.3 |
23.2 |
0.0 |
1.41 |
1.0982 |
53.4 |
0.0 |
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Mean |
646.9 |
91.9 |
593.9 |
72.3 |
315.9 |
205.7 |
26.5 |
620.4 |
23.6 |
2.9 |
1.66 |
1.0933 |
48.4 |
0.2 |
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LSD (0.05) |
128.2 |
3.8 |
124.3 |
72.9 |
77.6 |
57.1 |
21.4 |
124.3 |
8.4 |
8.7 |
0.13 |
0.0085 |
3.6 |
NS |
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Table 2. Western Regional Russet Trial tuber visual observations at harvest. Tuber defect observations are from a total of four plots for each clone. K = clone should be saved, D = clone should be discarded. Capital letters denote a higher intensity of an observation compared to lower case letters. Since there were four replicates, a clone could be scored for the same attribute up to four times.
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Cultivar |
Observations |
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Ranger Russet |
D, d3, CURVES, pointed, irregular, IRREGULAR, growth cracks, GROWTH CRACKS, bottle neck, alligator hide |
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Russet Burbank |
D4, 2pointed, POINTED, 2growth cracks, GROWTH CRACKS, irregular, IRREGULAR, knobs, KNOBS, 2curves, dumbbell, 2DUMBELL, bottle neck, 2BOTTLE NECK |
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Russet Norkotah |
K, 2k, d, 2pointed, 2bottle neck, 2irregular, water rot |
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A0008-1TE |
K2, k2, 3heart shape, 3irregular, 3growth cracks, 2pointed, water rot |
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A97066-42LB |
K, k3, knobs, curved, 3irreguar, 2growth cracks, pointed, dumbbell, discolored shine, mouse's favorite |
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AC96052-1RU |
K2, k2, irregular, 2pointed, heart shape, alligator hide, SWOLLEN LENTICELS |
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AO96141-3 |
k, d3, knobs, heart shape, 3curved, 4POINTED |
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AOTX95265-4Ru |
K3, k, knobs, 2pointed, 2growth cracks, 2heart shape, irregular, 3bottle neck |
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CO97087-2RU |
k2, d2, 3pointed, 3irregular, IRREGULAR, bottle neck, heart shape, curves, swollen lenticels, SWOLLEN LENTICELS, growth cracks, alligator hide |
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CO98067-7RU |
K, k, d2, 2pointed, 4bottle neck, 2curves, knobs, irregular, heart shape, alligator hide, water rot, 2swollen lenticels |
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CO98368-2RU |
k4, 3pointed, 2swollen lenticels, irregular, knobs |
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PA99N2-1 |
K2, k, d, swollen lenticels, 3irregular, IRREGULAR, 2heart shape, 2growth cracks, pointed, ROUND |
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PA99N82-4 |
k4, 3pointed, 2swollen lenticels, irregular, 2round, ROUND, growth cracks, GROWTH CRACKS, bottleneck |
Table 3. Oregon Statewide Russet Trial potato yield, grade, and processing quality, Malheur Experiment Station, Oregon State University, Ontario, OR, 2008.
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U.S. No. 1 |
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Average fry color, light reflectance |
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Variety |
Total yield |
Percent No. 1 |
Total |
>12 oz |
6-12 oz |
4-6 oz |
U.S. No. 2 |
Marketable |
<4 oz |
Cull |
Length/ width |
Specific gravity |
Sugar ends |
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cwt/acre |
% |
------------------------------------cwt/acre--------------------------------------- |
ratio |
g cm-3 |
------% ------ |
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Russet Burbank |
759.3 |
40.8 |
308.7 |
43.4 |
135.3 |
130.1 |
301.9 |
610.6 |
54.3 |
94.4 |
1.89 |
1.0865 |
38.6 |
0.0 |
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Ranger |
580.0 |
63.5 |
361.2 |
117.3 |
170.0 |
74.0 |
178.7 |
540.0 |
23.1 |
16.9 |
2.00 |
1.0950 |
45.9 |
0.0 |
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Norkotah |
578.1 |
90.4 |
522.0 |
74.3 |
311.3 |
136.4 |
18.1 |
540.1 |
34.4 |
3.6 |
1.79 |
1.0802 |
40.2 |
0.0 |
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AO96141-3 |
694.3 |
75.8 |
527.6 |
47.3 |
317.3 |
163.0 |
121.7 |
649.3 |
39.4 |
5.6 |
2.12 |
1.0977 |
53.2 |
0.0 |
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AO96305-3 |
660.4 |
61.7 |
408.4 |
81.2 |
253.8 |
73.3 |
209.9 |
618.3 |
25.0 |
17.2 |
2.05 |
1.0896 |
51.1 |
0.0 |
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AO96365-2 |
732.6 |
89.7 |
656.7 |
82.9 |
394.1 |
179.6 |
24.0 |
680.7 |
45.6 |
6.2 |
1.71 |
1.0901 |
43.7 |
0.0 |
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AO98282-5 |
863.9 |
87.6 |
758.6 |
77.1 |
469.0 |
212.6 |
48.3 |
806.9 |
55.5 |
1.5 |
1.82 |
1.1077 |
50.7 |
0.0 |
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AO00057-2 |
674.8 |
79.7 |
538.2 |
145.5 |
294.4 |
98.4 |
98.3 |
636.5 |
28.0 |
10.4 |
1.67 |
1.0940 |
51.4 |
0.0 |
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AO01057-5 |
614.3 |
93.7 |
575.7 |
76.3 |
338.5 |
161.0 |
7.6 |
583.3 |
25.0 |
6.1 |
1.66 |
1.0882 |
50.3 |
0.0 |
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AO02019-3 |
624.4 |
85.3 |
530.9 |
239.9 |
236.3 |
54.6 |
72.7 |
603.6 |
16.4 |
4.5 |
2.23 |
1.0913 |
47.4 |
0.0 |
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AO02182-1 |
664.8 |
90.0 |
597.7 |
77.3 |
362.7 |
157.8 |
27.7 |
625.4 |
36.9 |
2.6 |
1.83 |
1.0872 |
42.3 |
0.0 |
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AO02183-2 |
823.6 |
91.1 |
752.0 |
63.2 |
482.9 |
205.8 |
22.3 |
774.3 |
49.3 |
0.0 |
1.99 |
1.0973 |
54.7 |
0.0 |
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AO01114-4 |
640.8 |
92.4 |
593.3 |
65.4 |
379.7 |
148.1 |
26.0 |
619.3 |
12.4 |
9.2 |
1.88 |
1.0948 |
45.4 |
0.0 |
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AO02060-3 |
729.9 |
88.4 |
645.0 |
154.4 |
386.8 |
103.8 |
52.9 |
697.8 |
29.4 |
2.6 |
1.82 |
1.0859 |
50.8 |
0.0 |
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AO02118-2 |
638.3 |
94.2 |
601.7 |
147.7 |
358.2 |
95.8 |
6.3 |
608.0 |
30.3 |
0.0 |
1.74 |
1.0859 |
52.7 |
0.0 |
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AO03003-3 |
617.0 |
81.5 |
502.7 |
5.2 |
210.5 |
287.0 |
28.4 |
531.2 |
79.7 |
6.1 |
1.78 |
1.0843 |
45.7 |
0.0 |
|
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AO03096-5 |
813.5 |
64.5 |
523.5 |
82.9 |
316.1 |
124.5 |
257.6 |
781.1 |
23.0 |
9.4 |
1.94 |
1.0927 |
48.9 |
0.0 |
|
|
OR03085-5 |
600.2 |
72.2 |
436.3 |
75.0 |
164.1 |
197.2 |
54.0 |
490.3 |
53.7 |
56.2 |
1.65 |
1.0940 |
46.7 |
0.0 |
|
|
OR03151-4 |
777.3 |
85.4 |
663.3 |
32.4 |
240.8 |
390.0 |
26.8 |
690.1 |
86.2 |
1.0 |
1.69 |
1.0967 |
41.8 |
0.0 |
|
|
OR04018-5 |
661.1 |
88.1 |
583.9 |
217.9 |
282.8 |
83.2 |
43.7 |
627.6 |
28.3 |
5.3 |
1.80 |
1.0901 |
50.0 |
0.0 |
|
|
OR04057-2 |
866.3 |
86.1 |
744.8 |
177.9 |
387.2 |
179.7 |
51.8 |
796.6 |
51.3 |
18.4 |
1.97 |
1.0838 |
47.0 |
0.0 |
|
|
OR04062-1 |
800.4 |
84.2 |
664.4 |
24.5 |
362.7 |
277.3 |
10.5 |
674.9 |
62.8 |
62.8 |
1.60 |
1.1049 |
46.2 |
0.0 |
|
|
POR05V016-2 |
784.6 |
81.9 |
627.6 |
20.6 |
363.6 |
243.4 |
12.9 |
640.5 |
68.3 |
75.7 |
1.52 |
1.0855 |
41.4 |
0.0 |
|
|
Mean |
704.3 |
81.2 |
570.6 |
92.6 |
313.8 |
164.2 |
74.0 |
644.6 |
41.7 |
18.1 |
1.83 |
1.0915 |
47.2 |
0.0 |
|
|
LSD (0.05) |
128.4 |
11.4 |
111.3 |
63.2 |
80.5 |
60.8 |
50.2 |
116.4 |
21.9 |
NS |
0.22 |
0.0121 |
2.5 |
NS |
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Table 4. Oregon Statewide Russet Trial tuber visual observations at harvest. Tuber defect observations are from a total of four plots for each clone. K = clone should be saved, D = clone should be discarded. Capital letters denote a higher intensity of an observation compared to lower case letters. Since there were four replicates, a clone could be scored for the same attribute up to four times.
|
Cultivar |
Observations |
|
Russet Burbank |
D4, 2knobs, 2KNOBS, curves, CURVES, growth cracks, 3GROWTH CRACKS, irregular, IRREGULAR, 2dumbell, DUMBELL, 2pointed |
|
Ranger |
D2, d2 curves, 3CURVES, pointed, 3knobs, 2growth cracks, heart shape |
|
Norkotah |
K4, curves, growth cracks, 3irregular |
|
AO96141-3 |
D, d3, dumbbell, bottleneck, BOTTLENECK, knobs, 3curves, 3pointed, POINTED, 2growth cracks, GROWTH CRACKS, heart shape |
|
AO96305-3 |
D2, d2, 3growth cracks, GROWTH CRACKS, 3curves, CURVES, 2heart shape, 2dumbell, irregular, pointed |
|
AO96365-2 |
K2, k2, 2irregular, 4pointed, growth cracks, dumbbell |
|
AO98282-5 |
k4, 3pointed, dumbbell, 2curves, 4irregular, 2heart shape, bottleneck, growth cracks |
|
AO00057-2 |
k3, d, 3curves, 2knobs, 3dumbell, 2irregular, 2pointed, 2growth cracks, swollen lenticels |
|
AO01057-5 |
K3, k, knobs, 2irregular, 2pointed, curves, growth cracks |
|
AO02019-3 |
K2, k2, 4curves, 2growth cracks, 2knobs, irregular, pointed, water rot |
|
AO02182-1 |
K3, k, 4pointed, irregular, swollen lenticels |
|
AO02183-2 |
K2, k2, 2irregular, 3pointed, 2swollen lenticels, curves, heart shape, knobs |
|
AO01114-4 |
K3, k, 3growth cracks, swollen lenticels |
|
AO02060-3 |
K2, k2, irregular, 4growth cracks, heart shape, dumbbell, pointed, 2curves |
|
AO02118-2 |
K3, k, 4irregular, 2swollen lenticels, growth cracks, pointed |
|
AO03003-3 |
k3, d, 3pointed, POINTED, swollen lenticels, curves, heart shape, growth cracks, 2irregular, bottleneck |
|
AO03096-5 |
k, D, d2, 2growth cracks, 2curves, pointed, POINTED, bottleneck, BOTTLENECK, 2dumbell, |
|
OR03085-5 |
K, k2, D, 3curves, knobs, KNOBS, 2pointed, 3growth cracks, irregular |
|
OR03151-4 |
K, k3, 3irregular, 2pointed, curves, heart shape, swollen lenticels |
|
OR04018-5 |
K2, k, d, 2heart shape, 2curves, 3pointed, dumbbell, 2irregular, |
|
OR04057-2 |
K, k, d2, 4pointed, 4irregular, 2curves, 3swollen lenticels, dumbbell, 2heart shape, ALLIGATOR HIDE |
|
OR04062-1 |
K2, k2, 4irregular, 3pointed, heart shape |
|
POR05V016-2 |
K3, k, 3irregular, 2pointed, heart shape, knobs, bottleneck |
Table 5. Western Regional Specialty Potato Trial yield and grade of colored flesh clones. Malheur Experiment Station, Oregon State University, Ontario, OR, 2008.
|
|
Skin/flesh color |
|
U.S. No.1 |
|
U.S. No.2 |
Cull |
U.S. No. 2 +culls |
Rotten tubers |
Average tuber weight |
No. of tubers /plant |
Specific gravity |
||||
|
Variety |
Total yield |
<4oz |
4-6 oz |
6-10 oz |
4-10 oz |
<10 oz |
>10 oz |
||||||||
|
|
|
-------------------------------------------------- cwt/acre --------------------------------------------------- |
oz |
|
g cm-3 |
||||||||||
|
Dk Red Norland |
Dark red/white |
649.2 |
17.5 |
172.5 |
340.9 |
513.4 |
530.9 |
108.3 |
8.3 |
0.0 |
8.3 |
1.6 |
6.2 |
8.6 |
1.0769 |
|
Red LaSoda |
Lt. red/white |
528.5 |
17.3 |
136.9 |
271.2 |
408.0 |
425.3 |
98.1 |
3.0 |
0.0 |
3.0 |
2.2 |
5.6 |
7.8 |
1.0785 |
|
CO98012-5R |
Red/white |
523.2 |
109.1 |
339.2 |
65.2 |
404.4 |
513.5 |
0.0 |
9.7 |
0.0 |
9.7 |
0.0 |
3.0 |
14.3 |
1.0840 |
|
NDA7985-1R |
Red/white |
625.6 |
36.9 |
255.8 |
271.0 |
526.8 |
563.7 |
49.3 |
11.7 |
0.0 |
11.7 |
0.9 |
4.5 |
11.6 |
1.0790 |
|
A99331-2RY |
Red/yellow |
651.3 |
122.2 |
350.6 |
145.0 |
495.5 |
617.7 |
24.0 |
9.6 |
0.0 |
9.6 |
0.0 |
3.3 |
16.5 |
1.0900 |
|
AC99329-7PW/Y |
Purple/yellow |
554.9 |
74.5 |
278.7 |
147.8 |
426.4 |
501.0 |
19.6 |
33.8 |
0.0 |
33.8 |
0.5 |
3.7 |
12.6 |
1.0962 |
|
AC99330-1P/Y |
Purple/yellow |
625.4 |
174.0 |
392.7 |
50.7 |
443.4 |
617.4 |
3.3 |
4.6 |
0.0 |
4.6 |
0.0 |
2.8 |
18.4 |
1.0866 |
|
ATTX961014-1R/Y |
Red/yellow |
681.0 |
49.5 |
297.4 |
275.4 |
572.7 |
622.2 |
36.9 |
20.0 |
0.0 |
20.0 |
2.0 |
4.8 |
11.9 |
1.0798 |
|
ATTX98500-2P/Y |
Purple/yellow |
701.1 |
70.0 |
331.3 |
215.8 |
547.2 |
617.2 |
69.1 |
14.3 |
0.0 |
14.3 |
0.6 |
4.2 |
14.0 |
1.0890 |
|
POR01PG45-5 |
Pale purple/yellow |
593.8 |
67.4 |
403.0 |
118.1 |
521.1 |
588.5 |
0.0 |
4.5 |
0.0 |
4.5 |
0.8 |
3.9 |
12.6 |
1.0969 |
|
CO97222-1R/R |
Red/red |
483.8 |
106.4 |
322.1 |
49.7 |
371.8 |
478.2 |
1.2 |
3.5 |
0.0 |
3.5 |
0.9 |
3.0 |
13.4 |
1.0824 |
|
PA96RR1-193 |
Red/red |
554.4 |
93.4 |
368.1 |
84.3 |
452.4 |
545.8 |
5.5 |
2.0 |
0.0 |
2.0 |
1.1 |
3.6 |
12.9 |
1.0883 |
|
POR03PG23-1 |
Red/white |
514.0 |
69.3 |
353.8 |
75.9 |
429.8 |
499.1 |
0.9 |
8.5 |
0.0 |
8.5 |
5.6 |
2.9 |
14.7 |
1.0879 |
|
Purple Majesty |
Dk blue/purple |
693.4 |
123.3 |
434.0 |
109.4 |
543.4 |
666.7 |
5.6 |
21.2 |
0.0 |
21.2 |
0.0 |
3.3 |
17.4 |
1.0857 |
|
CO97215-2P/P |
Purple/purple |
557.0 |
94.2 |
372.9 |
87.9 |
460.7 |
555.0 |
1.1 |
1.0 |
0.0 |
1.0 |
0.0 |
3.2 |
14.5 |
1.0946 |
|
CO97227-2P/PW |
Purple/pur/white |
565.2 |
269.8 |
242.6 |
14.8 |
257.4 |
527.2 |
1.0 |
36.8 |
0.0 |
36.8 |
0.2 |
2.3 |
20.6 |
1.0949 |
|
OR00068-11 |
Purple/purple |
679.3 |
68.8 |
447.2 |
145.4 |
592.6 |
661.4 |
8.6 |
9.3 |
0.0 |
9.3 |
0.0 |
3.7 |
15.1 |
1.1044 |
|
Yukon Gold |
White/yellow |
423.7 |
16.7 |
103.1 |
190.9 |
293.9 |
310.7 |
100.1 |
11.6 |
0.0 |
11.6 |
1.3 |
6.2 |
5.7 |
1.0904 |
|
A00286-3Y |
Yellow/yellow |
424.8 |
34.1 |
197.4 |
152.8 |
350.2 |
384.3 |
33.2 |
6.9 |
0.0 |
6.9 |
0.5 |
4.7 |
7.5 |
1.0866 |
|
CO99045-1W/Y |
White/yellow |
657.5 |
56.2 |
359.5 |
202.4 |
561.9 |
618.1 |
30.8 |
6.7 |
0.0 |
6.7 |
1.9 |
4.0 |
13.6 |
1.0950 |
|
POR02PG26-5 |
Yellow/yellow |
707.2 |
55.4 |
345.7 |
213.6 |
559.3 |
614.7 |
26.7 |
59.1 |
0.0 |
59.1 |
6.6 |
5.0 |
12.0 |
1.0888 |
|
POR02PG37-2 |
Yellow/yellow |
532.7 |
66.9 |
285.2 |
155.2 |
440.4 |
507.4 |
18.0 |
5.7 |
0.0 |
5.7 |
1.5 |
4.1 |
10.8 |
1.0912 |
|
Mean |
|
587.6 |
81.5 |
308.6 |
153.8 |
462.4 |
543.9 |
29.2 |
13.3 |
0.0 |
13.3 |
1.3 |
4.0 |
13.0 |
1.0885 |
|
LSD (0.05) |
|
109.7 |
25.6 |
69.5 |
76.9 |
106.9 |
99.6 |
37.7 |
13.5 |
NS |
13.5 |
NS |
0.7 |
2.1 |
0.0067 |
Table 6. Western
Region Specialty Trial tuber visual
observations at harvest. Tuber defect observations are from a total
of four plots for each clone. K = clone should be saved, D = clone
should be discarded. Capital letters denote a higher intensity of
an observation compared to lower case letters. Since
there were four replicates, a clone could be scored for the same
attribute up to four times.
|
Cultivar |
Observations |
|
Dk Red Norland |
k4, 4red, pointed |
|
Red LaSoda |
k4, 4red, 3growth cracks |
|
CO98012-5R |
k4, 4red |
|
NDA7985-1R |
k3, K 4red, heart shaped, water rot |
|
A99331-2RY |
k, d3, 4red, 3yellow, heart shape, mottled skin, 2inconsistent color |
|
AC99329-7PW/Y |
k3, d, 4purple, 4yellow, mottled skin, KNOBS |
|
AC99330-1P/Y |
k4, 4purple, swollen lenticels |
|
ATTX961014-1R/Y |
k4, 4red, 3pointed |
|
ATTX98500-2P/Y |
k4, 4purple |
|
POR01PG45-5 |
k4, 3purple, 2red, pointed |
|
CO97222-1R/R |
k3, d, 3red, ALLIGATOR HIDE |
|
PA96RR1-193 |
k4, 4red, growth cracks |
|
POR03PG23-1 |
k4, 4red, 4yellow, 2mottled skin |
|
Purple Majesty |
d4, 4purple, 4ALLIGATOR HIDE |
|
CO97215-2P/P |
k4, 4purple, mouse's favorite |
|
CO97227-2P/PW |
k4, 4purple, round, heart shape, growth cracks |
|
OR00068-11 |
k4, 4purple |
|
Yukon Gold |
k4, 4yellow |
|
A00286-3Y |
k4, 4yellow, pointed, knobs |
|
CO99045-1W/Y |
k4, 4yellow, bottleneck, pointed, russet, dumbbell |
|
POR02PG26-5 |
d4, 4yellow stained pink, 4pointed, 3knobs, 2dumbell |
|
POR02PG37-2 |
k4, 4yellow, 4pink eyes |
Table 7. Western Region
Specialty Trial subjective taste test. Taste rating: 0 = worst, 5 =
best. Tubers were evaluated after 3.5 months of storage at
46°F and 90 percent relative humidity. Baked tubers had
surface oiled with cooking oil spray and baked for 60 min at
400°F. Microwaved tubers were cut in half, sprayed with
cooking oil, and microwaved on high for 7-8 min. Malheur Experiment
Station, Oregon State University, Ontario, OR,
2008.
|
Clone/Variety |
No. of sprouts |
Avg. length of longest sprout (cm) |
Baked |
Rating (0-5) |
Microwave |
Rating (0-5) |
|
|
Dk Red Norland |
0 |
|
ok, sort of sweet, slightly off taste |
4.0 |
pastier, slightly off taste |
4.2 |
|
|
Red LaSoda |
0 |
|
pasty, slightly off flavor |
3.9 |
slightly gummy, less flavor |
4.0 |
|
|
CO98012-5R |
2 |
0.2 |
slightly gummy, taste is good, Candace does not like |
3.5 |
slightly off flavor, Candace does not like |
3.3 |
|
|
A99331-2RY |
4 |
2.2 |
not bad, slight aftertaste, Myrtle thinks it is horrid |
3.5 |
off flavor is stronger when microwaved |
3.2 |
|
|
AC99329-7PW/Y |
6.5 |
3.1 |
flakey, sweet, slightly bitter, Clint only |
3.8 |
bitter, off flavor |
3.3 |
|
|
AC99330-1P/Y |
1.5 |
1.4 |
ok |
4.0 |
slightly bitter, not inedible |
3.8 |
|
|
ATTX961014-1R/Y |
3.5 |
4.5 |
good, bad, bad - disagreement among judges |
3.3 |
good, bad - disagreement among judges |
3.3 |
|
|
ATTX98500-2P/Y |
6 |
2 |
ok to good, slightly mealy |
4.25 |
not as good microwaved, somewhat bitter |
3.9 |
|
|
POR01PG45-5 |
0 |
|
ok, skin is good |
3.9 |
chewy, takes longer to cook |
3.9 |
|
|
CO97222-1R/R |
0 |
|
aftertaste, mealy texture |
3.5 |
very little aftertaste, texture is fine, took slightly longer to cook |
3.8 |
|
|
PA96RR1-193 |
0 |
|
firm texture |
4.25 |
slight aftertaste, took slightly longer to cook |
4.2 |
|
|
POR03PG23-1 |
4 |
3.7 |
firm, slight off flavor, acid?, stem end is tasty |
3.5 |
purple parts are really good, some bitterness |
4.0 |
|
|
Purple Majesty |
3.5 |
4.3 |
slightly disagreeable aftertaste, bland |
3.8 |
mealy, bland |
4.2 |
|
|
CO97215-2P/P |
2 |
0.1 |
different flavor, a bit chewy, skin is good, Candace likes it - special flavor |
4.0 |
mealy |
3.8 |
|
|
CO97227-2P/PW |
2 |
0.7 |
distinctive flavor, Clint thinks it's bitter, skin is good |
4.1 |
mealy |
3.4 |
|
|
OR00068-11 |
0 |
|
distinctly bitter |
3.0 |
beautiful purple color, somewhat acid or bitter, good aftertaste |
3.8 |
|
|
Yukon Gold |
1 |
0.6 |
mealy, slightly acid or bitter, skin is ok |
3.8 |
bland |
4.0 |
|
|
A00286-3Y |
0 |
|
sweet, good to bad good flavor |
3.7 |
bad flavor |
3.4 |
|
|
CO99045-1W/Y |
1.5 |
1 |
flakey texture, good taste |
3.9 |
mealy, acid |
3.6 |
|
|
POR02PG26-5 |
1 |
0.7 |
potato-potato flavor, skin is good |
4.1 |
mealy, good flavor |
4.0 |
|
|
POR02PG37-2 |
13 |
5.1 |
firm potato, gummy good |
4.4 |
good flavor, flaky |
4.2 |
Table 8. Oregon Specialty Potato Trial yield and grade of colored flesh clones. Malheur Experiment Station, Oregon State University, Ontario, OR, 2008.
|
|
Total yield |
|
U.S. No. 1 |
|
|
|
U.S. No. 2 +culls |
Rotten tubers |
Average tuber weight |
No. of tubers /plant |
Specific gravity |
|||
|
Variety |
<4 oz |
4-6oz |
6-10 oz |
4-10 oz |
<10 oz |
>10 oz |
U.S. No.2 |
Cull |
||||||
|
|
---------------------------------------------------- cwt/acre -------------------------------------------------- |
oz |
|
g cm-3 |
||||||||||
|
Yukon Gold |
415.5 |
16.4 |
95.0 |
171.6 |
266.6 |
283.0 |
124.4 |
8.1 |
0.0 |
8.1 |
0.0 |
6.0 |
5.8 |
1.0875 |
|
All Blue |
515.9 |
100.9 |
370.7 |
33.6 |
404.3 |
505.2 |
2.6 |
8.1 |
0.0 |
8.1 |
0.0 |
3.0 |
14.3 |
1.0778 |
|
OR04036-5 |
755.7 |
96.5 |
526.3 |
114.3 |
640.6 |
737.0 |
7.5 |
10.0 |
0.0 |
10.0 |
1.1 |
3.5 |
18.0 |
1.0642 |
|
OR04036-7 |
601.4 |
118.3 |
372.9 |
83.6 |
456.5 |
574.8 |
3.7 |
22.4 |
0.0 |
22.4 |
0.5 |
3.6 |
13.9 |
1.0786 |
|
OR04131-2 |
484.8 |
130.5 |
318.1 |
21.1 |
339.2 |
469.6 |
1.2 |
11.2 |
0.0 |
11.2 |
2.7 |
2.6 |
15.5 |
1.0827 |
|
POR02PG12-1 |
601.9 |
304.7 |
280.1 |
6.7 |
286.7 |
591.5 |
0.0 |
10.4 |
0.0 |
10.4 |
0.0 |
1.8 |
28.7 |
1.0813 |
|
POR03PG80-2 |
737.7 |
16.1 |
191.6 |
396.4 |
588.0 |
604.1 |
119.6 |
12.5 |
0.0 |
12.5 |
1.5 |
6.3 |
9.6 |
1.0857 |
|
POR04PG01-2 |
770.1 |
68.1 |
429.8 |
248.3 |
678.1 |
746.1 |
18.0 |
3.2 |
0.0 |
3.2 |
2.7 |
4.4 |
14.7 |
1.0933 |
|
POR04PG03-9 |
715.0 |
139.5 |
437.8 |
131.2 |
569.0 |
708.5 |
3.1 |
3.4 |
0.0 |
3.4 |
0.0 |
3.0 |
19.7 |
1.0886 |
|
POR04PG11-2 |
561.8 |
143.1 |
290.0 |
98.4 |
388.4 |
531.4 |
11.6 |
17.8 |
0.0 |
17.8 |
0.9 |
2.6 |
18.1 |
1.0906 |
|
POR05PG26-11 |
577.4 |
134.7 |
359.3 |
58.2 |
417.6 |
552.3 |
0.0 |
24.7 |
0.0 |
24.7 |
0.5 |
2.8 |
17.2 |
1.0936 |
|
POR05PG56-1 |
581.6 |
133.4 |
395.5 |
47.2 |
442.7 |
576.1 |
2.2 |
1.6 |
0.0 |
1.6 |
1.7 |
2.9 |
16.5 |
1.0851 |
|
Mean |
612.5 |
115.3 |
333.8 |
123.9 |
457.7 |
573.1 |
26.5 |
12.0 |
0.0 |
12.0 |
0.9 |
3.6 |
15.9 |
1.0841 |
|
LSD (0.05) |
86.8 |
26.4 |
79.1 |
45.8 |
94.3 |
90.8 |
32.1 |
13.0 |
NS |
13.0 |
NS |
0.7 |
3.5 |
0.0079 |
Table 9. Oregon Specialty Trial tuber visual observations at harvest. Tuber defect observations are from a total of four plots for each clone. K = clone should be saved, D = clone should be discarded. Capital letters denote a higher intensity of an observation compared to lower case letters. Since there were four replicates, a clone could be scored for the same attribute up to four times.
|
Cultivar |
Observations |
|
Yukon Gold |
K2,k2, 4yellow, 2growth cracks, heart shape |
|
All Blue |
D2, d2, 4purple, 4ALLIGATOR HIDE |
|
OR04036-5 |
K, k3, 4yellow, 2 knobs |
|
OR04036-7 |
d4, white stained pink, pink, inconsistent color, yellow, pink, yellow stained pink, 2heart shape |
|
OR04131-2 |
K, 3k, 4red |
|
POR02PG12-1 |
D, 3k, 4yellow, dumbbell, growth cracks, knobs, KNOBS |
|
POR03PG80-2 |
K2, k, d, 3purple, red, alligator hide |
|
POR04PG01-2 |
3k, d, 4yellow, 3purple, 2inconsistent color, red |
|
POR04PG03-9 |
k2, d2, 4red, 4yellow, 3inconsistent color |
|
POR04PG11-2 |
k3, d, 4yellow, 4red, dumbbell, knobs, KNOBS |
|
POR05PG26-11 |
D, d, k2, 4yellow, 3red eye, 2knobs, KNOBS, heart shape |
|
POR05PG56-1 |
K, k3, 4purple |
Table 10. Oregon Specialty Trial subjective taste test. Taste rating: 0 = worst, 5 = best. Tubers were evaluated after 3.5 months of storage at 46°F and 90 percent relative humidity. Baked tubers had surface oiled with cooking oil spray, and were baked for 60 min at 400°F. Microwaved tubers were cut in half, sprayed with cooking oil, and microwaved on high for 7-8 min. Malheur Experiment Station, Oregon State University, Ontario, OR, 2008.
|
Clone/Variety |
No. of sprouts |
Avg. length of longest sprout (cm) |
Baked |
Rating (0-5) |
Microwave |
Rating (0-5) |
|
|
Yukon Gold |
0 |
|
bitter, pasty |
3.5 |
nice texture, bitter |
3.6 |
|
|
All Blue |
0 |
|
good, skinless, horrid taste, need longer baking time due to density |
2.5 |
bitter, horrid |
2.5 |
|
|
OR04036-5 |
0 |
|
no off flavor, chewy |
4.9 |
sweet, smooth |
4.9 |
|
|
OR04036-7 |
0 |
|
bitter, skin not good |
2.0 |
ok, bitter skin |
2.5 |
|
|
OR04131-2 |
0 |
|
ok |
4.0 |
ok |
4.0 |
|
|
POR02PG12-1 |
10 |
3 |
good, pasty, slightly bitter |
3.8 |
good, very slightly bitter |
3.7 |
|
|
POR03PG80-2 |
0 |
|
crumbly, good |
4.5 |
good |
4.5 |
|
|
POR04PG01-2 |
5 |
4 |
mealy, slightly bitter, skin very bitter |
2.5 |
mealy, bitter |
2.5 |
|
|
POR04PG03-9 |
3.5 |
6 |
Attractive pink mottled, acid off flavor |
2.5 |
creamy, slightly off flavor |
3.0 |
|
|
POR04PG11-2 |
9.5 |
3 |
a little grainy, different flavor, skin is terrible |
2.5 |
mealy, bad flavor |
2.0 |
|
|
POR05PG26-11 |
0.5 |
1.5 |
mild flavor |
3.8 |
rubbery overcooked, mild flavor |
3.8 |
|
|
POR05PG56-1 |
0 |
|
slightly bitter, excellent texture, cooked relatively quickly |
4.0 |
slightly bitter, agreeable texture |
4.0 |
Table 11. Preliminary
Russet Yield Trial yield, grade,and
processing quality. Malheur Experiment
Station, Oregon State University, Ontario, OR,
2008.
|
|
|
U.S. No. 1 |
|
|
|
|
|
|
|
Average fry color, light reflectance |
|
||||
|
Variety |
Total yield |
Percent No. 1 |
Total |
>12 oz |
6-12 oz |
4-6 oz |
U.S. No. 2 |
Marketable |
<4 oz |
Cull |
Length/ width |
Specific gravity |
Sugar ends |
||
|
|
cwt/acre |
% |
------------------------------------cwt/acre--------------------------------------- |
ratio |
g cm-3 |
---- % ---- |
|||||||||
|
Russet Burbank |
650.5 |
56.7 |
368.6 |
55.5 |
170.5 |
142.7 |
232.1 |
600.7 |
25.6 |
24.2 |
1.7 |
1.0809 |
35.8 |
0.0 |
|
|
Ranger |
671.6 |
87.3 |
586.2 |
238.5 |
240.9 |
106.8 |
58.8 |
645.0 |
23.9 |
2.7 |
2.0 |
1.1013 |
48.4 |
0.0 |
|
|
Norkotah |
596.4 |
95.5 |
570.4 |
132.9 |
301.1 |
136.4 |
7.7 |
578.2 |
13.6 |
4.5 |
1.7 |
1.0745 |
40.1 |
0.0 |
|
|
AO99135-3 |
725.3 |
96.1 |
696.8 |
231.2 |
363.9 |
101.7 |
16.1 |
712.8 |
8.0 |
4.5 |
1.5 |
1.0963 |
41.1 |
0.0 |
|
|
AO99152-1 |
844.1 |
61.6 |
521.0 |
170.9 |
225.5 |
124.6 |
279.4 |
800.3 |
21.8 |
22.0 |
1.7 |
1.1101 |
41.3 |
0.0 |
|
|
AO00131-1 |
714.2 |
93.8 |
670.0 |
127.2 |
431.6 |
111.1 |
2.6 |
672.6 |
9.4 |
32.2 |
1.8 |
1.0966 |
45.1 |
0.0 |
|
|
AO03087-4 |
597.9 |
95.1 |
567.2 |
146.2 |
336.4 |
84.7 |
20.5 |
587.8 |
10.2 |
0.0 |
1.8 |
1.0961 |
38.5 |
0.0 |
|
|
AO03420-1 |
934.9 |
85.6 |
800.3 |
257.3 |
410.0 |
133.0 |
112.4 |
912.7 |
15.8 |
6.4 |
1.6 |
1.0983 |
47.9 |
0.0 |
|
|
OR05039-4 |
834.7 |
90.1 |
752.0 |
171.2 |
473.4 |
107.4 |
67.7 |
819.7 |
13.1 |
1.9 |
1.9 |
1.0947 |
49.0 |
0.0 |
|
|
OR05078-1 |
979.1 |
90.7 |
887.5 |
38.9 |
503.4 |
345.2 |
35.6 |
923.1 |
46.8 |
9.2 |
1.4 |
1.0924 |
43.3 |
0.0 |
|
|
OR05081-1 |
731.9 |
94.0 |
688.1 |
43.7 |
408.6 |
235.8 |
14.0 |
702.1 |
21.4 |
8.4 |
1.3 |
1.0933 |
50.1 |
0.0 |
|
|
POR06V12-3 |
680.2 |
94.9 |
646.1 |
72.2 |
347.1 |
226.8 |
11.3 |
657.4 |
22.8 |
0.0 |
1.6 |
1.1067 |
43.4 |
0.0 |
|
|
Mean |
746.7 |
86.8 |
646.2 |
140.5 |
351.0 |
154.7 |
71.5 |
717.7 |
19.4 |
9.7 |
1.7 |
1.0951 |
43.7 |
0.0 |
|
|
LSD (0.05) |
135.5 |
6.8 |
130.9 |
93.9 |
103.0 |
68.0 |
47.9 |
136.9 |
20.4 |
16.5 |
0.2 |
0.0093 |
4.6 |
NS |
|
Table 12. Preliminary Russet Yield Trial tuber visual observations at harvest. Tuber defect observations are from a total of two plots for each clone. K = clone should be saved, D = clone should be discarded. Capital letters denote a higher intensity of an observation compared to lower case letters. Since there were two replicates, a clone could be scored for the same attribute up to two times.
|
Cultivar |
Observations |
|
Russet Burbank |
d2, 2dumbell, 2curved, CURVED, 2knobs, pointed |
|
Ranger |
d2, CURVED, bottleneck, irregular, heart shape |
|
Norkotah |
K2, pointed, irregular |
|
AO99135-3 |
K, k, 2irregular, pointed, curved, growth cracks |
|
AO99152-1 |
D2, 2GROWTH CRACKS, heart shape, curved, irregular |
|
AO00131-1 |
k, d, irregular, pointed, POINTED |
|
AO03087-4 |
d2, 2curved, growth cracks, swollen lenticels, irregular, pointed, POINTED |
|
AO03420-1 |
K, k, 2irregular, 2growth cracks |
|
OR05039-4 |
K2, 2pointed, 2irregular, growth cracks |
|
OR05078-1 |
K, k, irregular, knobs, 2round |
|
OR05081-1 |
k2, 2irregular, 2round |
|
POR06V12-3 |
K2, 2irregular |
Figure 1. Cumulative irrigation water applied plus precipitation (dashed line) and potato evapotranspiration (solid line), Malheur Experiment Station, Oregon State University, Ontario, OR.
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