GENETIC-ANALYSIS OF QUANTITATIVE TRAITS F OR SOLUTION OF PLANT-BREEDING PROBLEMS

A brief outline of the development of the genetics of quantitative tra its and improvement of methods for their study is presented. It is dem onstrated that further progress in the genetics of quantitative traits is most probable with the use of new classes of genetic markers. The combination of chromosome substitution techniques with RFLP methods se ems to be especially promising. With regard to problems of genetic ana lysis, general trait classification, based on five parameters, is prop osed. The possibility of accurate estimation of the number of genes co ntrolling differences in crossed plants for quantitative traits with l ow variation (Cv < 10%) is substantiated.