ROLE OF CHROMOSOMES OF WHEAT HOMEOLOGICAL GROUP-7 IN GROWTH HABIT CONTROL

A hypothesis of association of chromosomes of homeological group 7 wit h genes determining growth habit in common wheat was examined using an experimental approach. The assumption of Law and Scarth [1] that domi nant allele Vrn4 is located in chromosome 7A was not confirmed. At the same time, dominant allele Vrn5 was shown to be located in chromosome 7B of the substitution line Chinese Spring/Hope. It was demonstrated that neither spring progeny of cv. Hope nor the cultivar itself and it s parents have this dominant allele. Hypotheses explaining this phenom enon are discussed.