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Postharvest Potato Variety Evaluation

2013 Tri-State Trial Longterm storage

Entries Retained from the 2013 Trial Currently in the Regional Trial

Harvested fall of 2013 Held at 48°F until December 21 Stored at 44°F until analysis

Three clones were retained from the 2013 Tri-State Trial into the 2014 Trial ( A0073-2, A03141-6 and AOR06070-1KF). When averaged across states, A0073-2 produced the lightest fries (44.0 ref units) and the uniformity of fry color was better for all clones relative to RB and Ranger. All entries and the check cultivars Ranger Russet and Russet Burbank had sprout lengths that averaged between 3.2 and 4.0 inches.

Clone stem bud avg DIFF COLOR stem bud avg percent length (in.)
Washington
1 Ranger Russet 27.3 40.4 33.8 15.9 1 1.7 0.7 1.2 100 4
2 Russet Burbank 22.5 46 34.2 23.5 2 2.3 0.5 1.4 100 5
3 A0073-2 40.5 49.7 45.1 9.3 0 0.7 0.5 0.6 100 3.5
4 A03141-6 39.2 44.3 41.7 5.2 0 0.8 0.6 0.7 100 4
5 AOR06070-1KF 36.8 45.2 41 8.6 0 0.9 0.6 0.7 100 3
LSD 0.05 3.4 5
Average 33.3 45.1 39.2 12.5 0.6 1.3 0.6 0.9 100
Idaho
1 Ranger Russet 27.9 42.1 35 15.4 1 1.6 0.6 1.1 100 4
2 Russet Burbank 24.5 47 35.8 22.5 1 2 0.5 1.3 100 0.5
3 A0073-2 38.2 48.2 43.2 10.8 0 0.8 0.5 0.7 100 2.5
4 A03141-6 41.1 52 46.6 10.9 0 0.7 0.5 0.6 100 2
5 AOR06070-1KF 48.7 51.6 50.2 5.9 0 0.5 0.5 0.5 100 6
LSD 0.05 4.4 5.8
Average 36.1 48.2 42.1 13.1 0.4 1.1 0.6 0.8 100
Oregon
1 Ranger Russet 27 42 34.5 15 1 1.7 0.7 1.2 100 4
2 Russet Burbank 22 42.3 32.2 20.2 2 2.4 0.6 1.5 100 4
3 A0073-2 40.6 47 43.8 6.5 0 0.7 0.5 0.6 100 5.5
4 A03141-6 40.2 45 42.6 6 0 0.7 0.6 0.6 100 3.5
5 AOR06070-1KF 34.5 46.7 40.6 12.3 0 1 0.5 0.8 100 1.5
LSD 0.05 4.7 4.8
Average 32.8 44.6 38.7 12 0.6 1.3 0.6 0.9 100
Date test performed:
Washington April 28
Idaho April 28
Oregon April 28

2013 Regional Trial Longterm storage

Entries Retained from the 2013 Trial Currently in the Regional Trial

Harvested fall of 2013 Held at 48°F until December 21 Stored at 44°F until analysis

Four clones were advanced from the 2013 Tri-State Trial into the 2014 Regional Trial (A03921-2, A06021-1T, A06084-1TE & AO03123-2). Seven clones were retained in the Regional Trial. When averaged across states, A02507-2LB (51.9 ref units) and POR06V12-3 (50.1 ref units) produced the lightest fries. Uniformity of fry color was unacceptable for eleven of the thirteen entries. A02507-2LB & POR06V12-3 were the only two entries to produce uniform fries from all three states. A03158-2TE had the shortest dormancy with the longest sprouts (9″) while A02507-2LB (1″) had the shortest average sprout length (these results have been consistent over the last 4 years).

PHOTOVOLT READING USDA % REDUCING SUGAR Sprouting
Clone stem bud avg DIFF COLOR stem bud avg percent length (in.)
Washington
1 Ranger Russet 27.3 40.4 33.8 15.9 1 1.7 0.7 1.2 100 4
2 Russet Burbank 22.5 46 34.2 23.5 2 2.3 0.5 1.4 100 5
3 A02424-83LB 34.1 47.4 40.7 13.3 0 1.1 0.5 0.8 100 5.5
4 A02507-2LB 51.7 52.7 52.2 3.7 0 0.5 0.5 0.5 100 1.5
5 A03158-2TE 36.7 43 39.8 12.3 0 0.9 0.6 0.8 100 9
6 A03921-2 § 41.4 49.5 45.4 8.9 0 0.7 0.5 0.6 100 4.5
7 A06021-1T § 27.5 41.8 34.7 14.3 1 1.6 0.7 1.2 100 2
8 A06084-1TE § 43.6 50.1 46.8 7.9 0 0.6 0.5 0.6 100 6.5
9 AO01114-4 33.7 47 40.4 13.3 0 1.1 0.5 0.8 100 3
10 AO02060-3 34.2 44.8 39.5 12.1 0 1 0.6 0.8 100 4.5
11 AO03123-2 § 46.5 49.2 47.8 6.1 0 0.5 0.5 0.5 100 2
12 OR05039-4 29.5 46.8 38.2 17.3 1 1.4 0.5 1 100 3
13 POR06V12-3 47 53.2 50.1 6.8 0 0.5 0.6 0.5 100 4.5
LSD 0.05 4 5.4
Average 36.6 47.1 41.8 12 0 0.9 0.5 0.8 100
Idaho
1 Ranger Russet 28.1 40.6 34.3 12.5 1 1.6 0.7 1.1 100 4
2 Russet Burbank 23.5 46.7 35.1 23.6 2 2.2 0.5 1.3 100 1
3 A02424-83LB 42.8 51.6 47.2 11.7 0 0.6 0.5 0.6 100 4
4 A02507-2LB 51.3 55.3 53.3 4.6 0 0.5 0.5 0.5 100 1
5 A03158-2TE 38 39.1 38.6 7 0 0.8 0.8 0.8 100 6
6 A03921-2 42.3 51.5 46.9 9.2 0 0.6 0.5 0.6 100 2.5
7 A06021-1T 33.2 44.7 38.9 11.5 0 1.1 0.6 0.8 100 0.5
8 A06084-1TE 52.6 54.1 53.4 3.9 0 0.5 0.5 0.5 100 5
9 AO01114-4 35 46.2 40.6 11.2 0 1 0.5 0.8 100 1.5
10 AO02060-3 43 49.7 46.3 6.9 0 0.6 0.5 0.6 100 2.5
11 AO03123-2 40.6 51.7 46.1 13.1 0 0.7 0.5 0.6 100 1.5
12 OR05039-4 39.3 49.7 44.5 10.8 0 0.8 0.5 0.6 100 3
13 POR06V12-3 48.5 53 50.8 4.8 0 0.5 0.6 0.5 100 3.5
LSD 0.05 3.6 4.7
Average 37.7 47.5 42.6 11.4 1 1.1 0.6 0.8 100
Oregon
1 Ranger Russet 27 42 34.5 15 1 1.7 0.7 1.2 100 4
2 Russet Burbank 22 42.3 32.2 20.2 2 2.4 0.6 1.5 100 4
3 A02424-83LB 33.5 46.7 40.1 16.4 0 1.1 0.5 0.8 100 4
4 A02507-2LB 48 52.4 50.2 5.4 0 0.5 0.5 0.5 100 1.5
5 A03158-2TE 40 45.1 42.6 7.8 0 0.7 0.6 0.6 100 13
6 A03921-2 43.5 53.4 48.5 9.9 0 0.6 0.6 0.6 100 8.5
7 A06021-1T 29.8 35 32.4 7.9 1 1.4 1 1.2 100 2.5
8 A06084-1TE 29.2 44.9 37 15.7 1 1.5 0.6 1 100 7
9 AO01114-4 30.9 45.4 38.2 14.5 0 1.3 0.6 0.9 100 9
10 AO02060-3 43.3 42.7 43 5.1 0 0.6 0.6 0.6 100 6
11 AO03123-2 39.2 47.3 43.3 8.8 0 0.8 0.5 0.6 100 4
12 OR05039-4 36.5 46.9 41.7 11.5 0 0.9 0.5 0.7 100 4.5
13 POR06V12-3 49.2 49.4 49.3 6.9 0 0.5 0.5 0.5 100 3.5
LSD 0.05 4.5 5.7
Average 36.3 45.7 41 11.2 0 1.1 0.6 0.8 100
§ Advanced from 2013 Tri-State Trial
Date test performed:
Washington April 29
Idaho April 30
Oregon May 1