Зерновое хозяйство России (May 2018)
The study of the modes of inheritance of the trait “1000-seed weight” by hybrids F<sub>2 </sub> of winter soft wheat
Abstract
THE STUDY OF THE MODES OF INHERITANCE OF THE TRAIT ‘1000-SEED WEIGHT’ BY THE HYBRIDS F2 OF WINTER SOFT WHEAT The work presents the results of the study of 10 hybrids F2 obtained from diallele crossings of such varieties and lines of winter soft wheat as ‘Bunchuk’, ‘Kipchak’, ‘1421/06’ (a working name ‘Luiza’) and ‘696/98’ (a working name ‘Emma’). With the help of the computer programs ‘Gen-3’ and ‘Polygen A’ there has been carried out a genetic analysis of the trait ‘1000-seed weight’. During the genetic analysis there have been determined the types of dominance of the trait values: from its absence to a super dominance; the degree of dominance varied from -0.08 to 4.0. It has been found that the differences of the studied varieties of winter soft wheat in the value of ‘1000-seed weight’ are determined by a small number of genes with various strength, i.e. 1-2 pairs, responsible for the inheritance of the studied trait. It allows selecting and using in the process of selection some recombined forms with a proper recurrence of hereditary traits from a relatively small number of hybrid populations.
