Genetic control systems of stem branching and plant height in linseed

A diallel analysis of the traits “plant height”, “number of lateral stems”, and “number of lateral shoots” was carried out using Hayman’s method in three self-pollinated lines and one linear cultivar of linseed. A similarity was demonstrated between the inheritance of the studied traits and the additive-dominant model without any nonallelic interactions. The recessive nature of inheritance of increased plant height and high numbers of shoots together with dominant inheritance of increased numbers of lateral stems was revealed. The number of blocks of polymeric genes responsible for the variability in the studied traits was also estimated. The lines of linseed were ranged according to their contents of dominant alleles.