Identification of short-stem gene Rht-B1 in the winter soft wheat samples

Abstract

The current paper has presented the estimation results of the collection material of winter soft wheat according to the presence of alleles of short-stem gene Rht-B1. Identification of the samples with short-stem genes is of great necessity in the development of winter wheat varieties of the steppe ecotype with high adaptability to harvesting. Search, identification and development of a new highly productive and short-stem source material of winter soft wheat is of great relevance nowadays. The purpose of our study was to identify alleles of short-stem gene Rht-B1 in the collection samples of winter soft wheat. The study was carried out in the laboratory of the marker breeding of the FSBSI “Agricultural Research Center “Donskoy” in 2017. There were used the following research methods: a DNA extraction by the CTAB-method, estimation of the quantity and quality of the extracted DNA on a spectrophotometer, fulfillment of polymerase chain reaction and agarose gel electrophoresis, detection of amplicons in ultraviolet by gel photodocumentation system. As a result, due to the use of SSR-markers there were studied 162 short-stem samples of winter soft wheat of various ecological and geographical origin. There were identified 7 winter soft wheat samples with the Rht-B1a allele, such as “Grom”, “Kraplina”, “Stepovichka”, etc. and 13 winter soft wheat samples with the Rht-B1b (Rht1) allele, such as “1765/13”, “1816/15”, “GK Margit”, etc. There were identified 9 winter soft wheat samples with the Rht-B1e (Rht11) allele, such as “GK Margit”, “Minestrel”, “1004/14”, etc. It was recommended to use winter soft wheat samples with the Rht-B1b and Rht-B1e alleles when breeding for short stems.