Accepted_test

Genetic dissection of spike productivity traits in spring barley

by Rozanova Irina | Grigoriev Yuri | Kukoeva Tatiana | Lukina Ksenia | Shvachko Natalia | Kovaleva Olga | Khlestkina Elena | N.I. Vavilov All-Russian Research Institute of Plant Genetic Resources (VIR), 190000 St. Petersburg, Russia | Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Lavrentjeva Ave. 10, Novosibirsk, 630090, Russia | Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Lavrentjeva Ave. 10, Novosibirsk, 630090, Russia | N.I. Vavilov All-Russian Research Institute of Plant Genetic Resources (VIR), 190000 St. Petersburg, Russia | N.I. Vavilov All-Russian Research Institute of Plant Genetic Resources (VIR), 190000 St. Petersburg, Russia | N.I. Vavilov All-Russian Research Institute of Plant Genetic Resources (VIR), 190000 St. Petersburg, Russia | N.I. Vavilov All-Russian Research Institute of Plant Genetic Resources (VIR), 190000 St. Petersburg, Russia

Abstract ID: 541

Event: BGRS-abstracts

Sections: [Sym 4] Section “Genome-wide association studies”

Barley (Hordeum vulgare L.) is one of the most commonly cultivated cereals worldwide. The main goal in barley breeding is to combine high yield with better grain quality. In Russia, the main areas are occupied by two-row barley. Six-row barley can be a carrier of many useful traits for the breeding process. The genes introgression that controls these traits to two-row varieties is a perspective task. When investigating the productivity traits related to the assessment of grain productivity, it is necessary to understand how much the loci that determine the spike row will affect this trait. The study of samples containing both two-row and six-row forms will allow us to identify new donors for breeding programs. Currently, selection methodology has been significantly enriched by the inclusion of genetic markers in the work. The most modern method is genome-wide association studies (GWAS), which is based on identifying SNPs associated with the desired trait. Over the past two decades, donor genetic diversity for various traits has been significantly expanded using GWAS. The aim of this study is to identify loci associated with traits of barley grain productivity and to evaluate the influence of genes that control the number of rows in a spike on the studied phenotypes.

Our study represents a search for loci related to row type determination. It was found that genes controlling the rowing of the spike make a large contribution in the combined samples.