Quality of Hungarian clover (Trifolium pannonicum Jacq.) seeds of Snezhok variety

The article presents the results of many years research (2011-2021) on determining quality Hungarian clover (Trifolium pannonicum Jacq.) seeds Snezhok variety obtained in conditions Kirov region (North-East European part Russia). weight 1000 averaged 4.16 g with changes over from 3.83 to 4.60 and depended amount precipitation (r = 0.71), hydrothermal coefficient during flowering period grass stands 0.69), average daily daytime air temperatures "flowering-the beginning maturation" -0.70). On average, length was 2.45 mm, width – 1.93 mm; thickness 1.40 mm. According ratio these parameters, had an ovoid ellipsoid (elongated) shape. size seed material (integral indicator) did not exceed 2.0 In greater moisture availability (98-189 % norm) large were formed (from 1.92 2.00 mm), insufficient (64-81 %) ‒ small (1.78 mm). initial germination indicators, all met requirements GOST R 52325-2005 classified as "original seeds". Germination germinating energy 86.7-99.5 80.0-97.0 %, respectively, they temperature "budding-seed ripening" 0.66 0.68) remained at a high level for first three four storage. mainly low content hard (1.5-7.0 %). some years, "hard-seeding" freshly harvested reached 20.0-36.0%, however, after post-harvest ripening period, it significantly decreased. yellow color, which gradually changed beige-brown or brown-beige Regression analysis showed strong relationship between color different storage periods rates. presence number batch indicated their 0.98) 0.95). predominant brown loss sowing qualities -0.94 r -0.91, respectively).