Assessment of potato hybrids in competition test (Yakutia, 2017–2018)

Abstract

Assessment of potato hybrids in competition test (Yakutia, 2017–2018). P.P. OKHLOPKOVA, N.S. YAKOVLEVA, S.P. EFREMOVA (Yakut Scientific Research Institute of Agriculture named after M.G. Safronov, Yakutsk).

The article presents the results of testing of 10 promising hybrids in nurseries of competitive testing in the conditions of Central Yakutia for 2017–2018. All studied hybrids belong to the group of early maturing (55–70 days): 216 (Dachnyy × 128-6), 239-1, 239-2, 239-3 (Ladozhsky x Rozalind), 233, 233-2 (Slavyanka × Rozalind), 237, 237-1 (Severnyy × Dubrava), 232 (Aurora × Bonus), 234 (Alyy parus × Victoria).
Evaluation of hybrids showed that the studied hybrids, according to economically valuable traits, correspond to the model of the variety: they have good biochemical indicators, and in appearance of the tubers correspond to the requirements of consumers (small surface eyes, a mid-depth stolon trace). The investigated samples of hybrids had a marketability of 92–97 %, which makes them economically valuable.
The samples differed in the content of dry matter (18.4–22.1 %) and starch (9.5–13.4 %). The content of nitrates in tubers did not exceed the permissible concentration.
In terms of resistance to the most common diseases in local conditions, it has been established that the samples under study have field resistance to viral diseases, macrosporosis, rhizoctoniosis, and common scab. According to the results of the research, hybrids of potatoes 232 (Aurora × Bonus), 233 (Slavyanka × Rozalind) were selected for further study.