Abstract
The article presents the results of the test of twelve promising hybrids (six combinations) in nurseries of a competitive test (1 and 2 years) in the conditions of Central Yakutia, conducted in 2018-2019 (the characteristics of weather conditions are presented). All of them belong to the group of early-maturing and mid-early (55-70 days): 216 (Dacha × 128-6), 239-1, 239-2, 239-3 (Ladoga × Rosalind), 233, 233-2 (Slavyanka × Rosalind), 237, 237-1 (Severny × Dubrava), 232 (Aurora × Bonus), 234 (Scarlet Sail × Victoria). The evaluation showed that the studied hybrids correspond to the variety model according to economically valuable characteristics: they have a high yield, good biochemical indicators, the appearance of the tubers meets the requirements of consumers (small surface eyes, medium-deep stolon trace), high shelf life during storage, the tasting score of the tubers is 4.0 points. The studied samples of hybrids had a yield of 26.0-42.0 t / ha, 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 the tubers did not exceed the permissible concentration. The studied samples are resistant to the most common diseases of the zone: viral (common mosaic, twisting of leaves, curly hair, wrinkled mosaic, etc.), macrosporiosis,rhizoctoniosis, scab. According to the results of the conducted studies, potato hybrids 232 (Aurora × Bonus), 233 (Slavyanka × Rosalind) and 239-2 (Ladoga x Razolind) were selected for further study and transferred to the resistance to the causative agent of cancer and nematodes.
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