Validation of race non-specific, adult plant leaf rust resistance genes Lr34 and Lr67 in some common wheat (Triticum aestivum L.) cultivars
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Authors
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A.N. Mishra
ICAR-Indian Agricultural Research Institute, Regional Station, Indore 452 001
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K. Kaushal
ICAR-Indian Agricultural Research Institute, Regional Station, Indore 452 001
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V.G. Dubey
ICAR-Indian Agricultural Research Institute, Regional Station, Indore 452 001
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G.S. Shirsekar
ICAR-Indian Agricultural Research Institute, Regional Station, Indore 452 001
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S.V.Sai Prasad
ICAR-Indian Agricultural Research Institute, Regional Station, Indore 452 001
Abstract
Twelve common wheat cultivars with Lr34 postulated based
on leaf tip necrosis and other observations were studied
for adult plant resistance to leaf rust (Puccinia triticina)
pathotype 77-5 (121R63-1), and validation of Lr34 and Lr67
through allelic tests. Line 897 and Frontana, known Lr34
carriers, served as checks. Resistance was governed by
one dominant gene each in C 306, Kalyansona, Line 897, NI
5439 and WH 147; and by two dominant genes each in
Frontana, GW 173, HD 2189, HI 1077, HP 1744, K 9107, PBW
175, PBW 373, and UP 2338. Allelic tests showed presence
of Lr34 in Frontana, GW 173, HD 2189, HP 1744 and Line
897; and of Lr67 in C 306, NI 5439 and K 9107. Comparison
is drawn with reports based on molecular markers. Our
findings should be useful in multiple disease resistance
breeding as Lr34 and Lr67 are associated with resistance to
multiple wheat pathogens.