THE EFFECT OF AGROECOLOGICAL FACTORS ON THE VIGOR OF GRAIN CROP SEEDS GROWTH IN NOVOSIBIRSK REGION

The aim of research is to conduct monitoring of seeds growth vigor in wheat and barley as well as to reveal the effect of cultivar, year and area of seeds production on the index of their growth vigor. In the years 2009–2013, the research was conducted in Research Center «Ecoflora» and at the Chair of Phytopathology and Plant Protection Systems of Novosibirsk SAU. The growth vigor estimation was carried out with the method of rolls on 182 grain crop samples from the areas of Novosibirsk region. It was established that the highest values of cereal crop seeds growth vigor were obtained in 2011–2012. The index of seed growth vigor varied with season, minimum value was observed in barley seeds in 2013, it was 62.3%; maximum value was in wheat in 2012, it was 90.0%. The vigor of barley seed growth was below 80% averaged over all the years. Dispersion analysis showed that the share of influence of the factors «crop» and «year» on the seed growth vigor made up 22 and 66%, respectively, and it was significant at 5% significance level. Averaged over 5 years, it were the seeds of Omskaya 36 spring wheat that could be referred to as full-vigorous (85.6%), the unsatisfactory index of growth vigor belonged to the cultivar Altaiskaya 325 (69.2%). The index averaged over the years varied from 62.8 to 89.9% in the seeds grown up in Kochenevo area, that of the seeds sown and grown up in Krasnoozersky area did from 59.4 to 89.9%, the Krasnoozersky index being nearly equal averaged over the years. Among agroecological factors, the highest effect on spring wheat seeds growth vigor was produced by weather conditions of «year» (33–66%), the effect of «cultivar» and «area», where the seeds were obtained, was appreciably lower and in most cases, not true statistically

seeds growth vigor, wheat, barley, cultivar, area, сила роста семян, пшеница, ячмень, сорт, район, effect share, seeding stock quality, agroecological factor

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