Изменчивость длины главного стебля озимых форм Triticum aestivum L. в условиях Тюменской области

There are shown long-term (2007–2011) results of researches of 118 samples of winter wheat estimation by length of straw from the world collection of VNIIR of N. I. Vavilov (VIR). We considered sample’s ecological and geographical origin and its accessory to a different botanical variety. The study took place in collection nursery according to VIR methods. Based on collected results of phenotypic variability the indication is referred to average variety. Studied genotypes differed in implementing the character in a favorable or unfavorable growing condition. Were determined some samples with relatively weak response in the different years of research on the uncontrollable weather factors (moisture content, temperature). The most dominate morphological type was present as undersized plants. Considerable distinctions of vegetative periods based on meteorological characteristics allowed us to determine the pattern of variability of the indication. The range of the stalk’s length is taken as one of the indicators that characterize ecological resistance of winter wheat forms to complex soil and climatic conditions and allows determining the genotypes with the best average values and performance stability.