Identification of yellow rust resistance sources in advanced breeding lines of barley (Hordeum vulgare L.)

Abstract

Yellow rust of barley caused by Puccinia striiformis f. sp. hordei (Psh), is an important disease in barley growing regions of India and worldwide. For identifying adult plant stage resistance to yellow rust, a set of 29 barley advanced breeding lines was tested at five locations, Durgapura, Jammu, Ludhiana, Bajaura and Karnal during 2016-17 and 2017-18. The seedling resistance test was conducted on 27 barley advanced breeding lines against seven Psh pathotypes separately under controlled conditions at ICAR-IIWBR, Shimla during 2017-18. As consequences, seven lines (DWRFB10, DWRFB12, DWRFB14, DWRFB15, DWRFB19, DWRFB20, and DWRFB28) were found immune to highly resistant against yellow rust at adult plant stage across the locations. Similarly, seven advanced breeding lines viz., DWRFB11, DWRFB12, DWRFB13, DWRFB14, DWRFB19, DWRFB20, and DWRFB27, were found resistant to yellow rust at the seedling stage. On the basis of APR and SRT, four advanced barley breeding lines, DWRFB12, DWRFB14, DWRFB19 and DWRFB20 were highly resistant to yellow rust (nearly immune) both at seedling and adult-plant stages. DOI.org10.25174/2249-4065/2019/85076