Manifestation of transgressive variability in progenies of intervarietal sunflower hybrids

On the basis of study of transgressive variability in soybean hybrid progenies of F 2-F 4 it was determined that indexes of degree and frequency of positive transgressions on main economic characters of soybean depend on genotype and generations and unrelated to each other. The combinations possessing donor qualities of certain traits were identified; the best hybrid combination was Amethyst/Agate. In most cases there is a sharp decrease of transgression frequency in the third generation in comparison to the second and its further increase in the fourth generation.