GrainGenes Reference Report: INP-57-90
Reference
INP-57-90
Title
Temperature sensitivity and adult plant resistance of some Lr genes in Triticum species
Journal
Indian Phytopathology
Year
2004
Volume
57
Pages
90-91
Author
Nayar SK Bhardwaj SC Prashar M Jain SK
Abstract
The effect of temperature on the expression of Lr genes in the seedling and adult wheat (Triticum sp.) plants was studied. Four pathotypes of P. recondita f.sp. tritici (P. hordei) (1R5, 125R3-1, 121R63-1 and 21R55). Lr40, Lr41 and Lr44 showed definite influence of temperature on pathotype specific interaction, whereas other Lr genes were nearly consistent in their response to brown rust at the two temperatures. Both Lr40 and Lr41 showed susceptibility at higher temperatures to 125R3-1 whereas Lr44 to 121R63-1. In these genotypes, increase in temperature increased susceptibility. Most of these Lr genes showed pathotype-specific lower infection type resistance to one or other pathotypes at adult plant stage. Adult plant resistance (APR) of low infection type to all the three pathotypes 1R5, 121R63-1 and 21R55 was observed in Lr21, Lr22a, Lr35 and Lr37, whereas Lr12 and Lr16 produced APR of low infection type to pathotypes 1R5 and 21R55. Lr13 and Lr17 showed similar adult plant resistance to pathotype 21R55 and Lr36 to pathotype 121R63-1
Keyword
disease resistance
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GrainGenes Reference Report: INP-57-90
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||