Postulation of genes for stem rust resistance in selected wheat lines from Nepal
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Authors
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B.N. MAHTO and S.C. BHARDWAJ
Keywords:
Wheat, stem rust, Puccinia graminis f. sp. triticiAbstract
Fifty five wheat lines / cultivars were seedling evaluated against eight pathotypes of stem rust (Pueeinia graminis f. sp. tritiei). Seven 5r genes (5r2, 5r5, 5r7b, 5rBa, 5r9b, 5r11 and 5(31) were characterized in fifty one lines/ cultivars singly or in combination with each other. Resistance to stem rust in 24 lines was largely dependent on 5r31 followed by 5r2, 5r11, 5r9b, 5rBa, 5r5 and 5r7b either singly or in combinations. In addition to the lines having 5r31, three other lines were found resistant to the pathotypes of P. graminis f. sp. tritiei. Stem rust resistance of Nepalese wheat material has not been studied so far and the present investigation is the first report on the probable architecture of this resistance.
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