THE STUDY OF HETEROGENEITY OF VARIETIES OF WINTER-WHEAT TRITICUM-AESTIVUM L FOR HYBRID POSTERITY

Heterogenety of varieties of winter wheat (Triticum aestivum L.) was studied based on some adaptive characters and selection importance of their plant constituents. Hybridization methods followed by family analysis as well as the contrast ecological <<hard>> backgrounds for plants growing were used. The methods promoted obtaining evidence for phenotypic and probably genotypic heterogeneity of starting varieties and the F2 hybrids. Heterogeneity of parental varieties for seed fertilization of F1 and F2, and for F2 family survival is demonstrated. The so-called <<pests of selections>> are vevealed in hybrid populations Odessa semi-dwarfish X Daritz, Daritz X Olvia, Odessa semi-dwarfish X Olvia, Nakhodka X Kiyanka, i.e. different probability of selections in posterity of different F0 hybrids was proved.