Physiologic specialization of Puccinia triticina on wheat (Triticum species) in India
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Authors
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S C BHARDWAJ
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M PRASHAR
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S K JAIN
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SUBODH KUMAR
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Y P SHARMA
Keywords:
Leaf rust, Pathotypes, Puccinia triticina, Resistance, VirulenceAbstract
During 2005–08 physiologic variation of brown rust of wheat (Puccinia triticina Eriks.) in India was studied. Samples of brown rust were obtained from Triticum species and triticale, grown in different parts of India. Pathotypes 121R63– 1 (THTTS), 21R55 (PHTTL) and 21R63 (PHTKL) virulent on Lr1, Lr3, Lr13, Lr16, Lr17, Lr23, Lr26 were most common among the 31 pathotypes identified in 2630 samples. Eight new pathotypes with 377R60–1 (MHTTS) virulent on Lr28 were identified during this period. Though virulence for Lr9 existed earlier, however, virulent phenotypes on Lr9, Lr24, Lr25, Lr32, Lr39, Lr42 and Lr45 were not observed in the field population of brown rust from India.
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