Influence of the weather conditions on qualitative and quantitative composition of tocopherols in winter rapeseed

There were investigated content and isomer composition of tocopherol in 18 rapeseed varieties. The researches were conducted in the Plant Production Institute nd. a. V.Ya. Yuryev, Kharkov, Ukraine, on chromatographic system Smartline. There were analyzed the seeds of winter rapeseed grown up under contrasting weather conditions in different years; 2009 was favorable for the growth and development of the rapeseed pants on a range of factors, and 2013 was differed extremely with dry weather throughout the growing season. Heavy weather conditions of 2013 have shown more close positive connection between tocopherols quantity and a sum of positive temperatures (r = 0.68), the duration of seeds forming (r = 0.66), the amount of precipitations (r = 0.63) in comparison with weather conditions of 2013. An increasing of average daily temperature negatively effected the accumulation of tocopherols (r = 0.53). The most varieties on tocopherols quantity appeared to have a good adaptability to different environments, the regression coefficient b