Creation of starting material for soya breeding on the basis of use of different methods

The comparative estimation was made regarding different methods for creation of starting material in soya breeding: hybridization, physical and chemical mutagenesis, hybridization coupled with mutagenesis. In hybrids and hybridomutants the authors studied the productivity, morphological and quantitative determinants and also resistance to diseases. For exposure of genetic diversity and variability of quantitative determinants the coefficient of inheritance was used. It was established that the highest value of inheritance and reaction on breeding were obtained in hybridomutants at the combined method (hybridization + physical mutagenesis in F1), which permit to obtain the high productive soya lines, the best of them (Primorskaya 1305) was passed into State variety examination.