Sources of resistance to Indian pathotypes of Puccinia graminis tritici and P. triticina in durum wheat. Issue 5 (6th August 2015)

• Record Type: Journal Article
• Authors: Mishra, Akhilesh N.; Shirsekar, Gautam S.; Yadav, Sitaram; Kaushal, Kamini; Dubey, Vijay G.; Sai Prasad, Sakuru V.; McIntosh, R. A.
• Is Part Of: Plant breeding. Volume 134:Issue 5(2015)
• Page Start: 508
• Page End: 513
• Publication Date: 2015-08-06
• Subjects: Plant breeding -- Periodicals; 631.52
• DOI: 10.1111/pbr.12295
• Languages: English
• ISSNs: 0179-9541

Abstract

<abstract abstract-type="main" id="pbr12295-abs-0001"> <title>Abstract</title> <p>Stem rust and leaf rust are important diseases affecting durum wheat production in India. Inheritance and extent of diversity in resistance were studied in five durum genotypes, viz. ʽB 662', ʽED 2398‐A', ʽHG 110', ʽIWP 5019' and ʽLine 1172ʼ using <italic>Pgt</italic> pathotypes 40A and 117‐6, and <italic>Pt</italic> pathotypes 12‐2 and 104‐2. F₂ and F₃ analyses showed that resistance was conferred by one or two genes in each line. In all, four genes for resistance to 40A, and eight each for pathotypes 117‐6 and 12‐2 were identified among the five genotypes, and three for resistance to 104‐2 among B 662, ED 2398‐A and IWP 5019 were indicated by tests of allelism. Although the gene identities are not known, at least some of them should be different from <italic>Sr2</italic>, <italic> Sr7b</italic>, <italic> Sr8a</italic>, <italic> Sr8b</italic>, <italic> Sr9e</italic>, <italic> Sr9g</italic>, <italic> Sr11, Sr12</italic>, <italic> Sr13</italic>, <italic> Sr14</italic>, <italic> Sr17</italic>, <italic> Sr23</italic> and <italic>Sr28</italic>; and from <italic>Lr3</italic>, <italic> Lr14a</italic>, <italic> Lr23</italic> and <italic>Lr27 </italic>+<italic> Lr31</italic>. These genotypes enrich the diversity of resistance to stem rust and leaf rust for durum wheat improvement.</p> </abstract>