GrainGenes Reference Report: IJA-74-185
Reference
IJA-74-185
Title
Pathotypes of Puccinia recondita tritici in India during 1999-2001
Journal
Indian Journal of Agricultural Sciences
Year
2004
Volume
74
Pages
185-189
Author
Jain SK Nayar SK Prashar M Bhardwaj SC Subodh K
Abstract
The pathotype distribution of 1962 samples of brown rust (P. recondita f.sp. triciti (P. hordei)) of wheat from India and Nepal was studied during 1999-2001. A set of lines, which are resistant to all the pathotypes of P. recondita f.sp. tritici reported so far from India, were evaluated against the field isolates. This set included lines with resistant genes such as Lr19, Lr24, Lr25, Lr28, Lr29, Lr32, Lr41, Lr42 and Lr45. A total of 22 pathotypes were identified during 1999, twenty in 2000 and 12 in 2001. A new pathotype (121R127) was identified during 1998/99 season in a sample from HUW 234 x Lr9 from Nilgiri hills of Tamil Nadu. This pathotype had the matching virulence for brown rust-resistant gene Lr9, which was resistant to all the pathotypes of brown rust in India until recently. This pathotype in addition to other resistant genes had also combined virulence for Lr23 and Lr26. The pathotype 121R63-1 (virulent on both Lr23 and Lr26 and many other common resistance genes) was the most prevalent in Nilgiri hills of south India, whereas in other states (Karnataka, Maharashtra, Gujarat, Madhya Pradesh, Rajasthan, Bihar, West Bengal, Uttar Pradesh, Delhi, Haryana, Punjab, Himachal Pradesh, and Jammu and Kashmir) either pathotype 21R55 (also virulent on both Lr23 and Lr26) or 109R31-1 (virulent on Lr23 but avirulent on Lr26) was the most predominant
Keyword
disease resistance
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: IJA-74-185
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||