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Genetic variation in drought response of landraces of pearl millet [Pennisetum glaucum (L.) R. Sr.]

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Title Genetic variation in drought response of landraces of pearl millet [Pennisetum glaucum (L.) R. Sr.]
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Creator O. P. Yadav
E. Weltzien-Rattunde
F. R. Bidinger
 
Subject Pearl millet
land race
drought tolerance
adaptation
stress environments
 
Description Not Available
Crop landraces are considered as a good germplasm source for adaptation to prevalent stress conditions. In this study, 105 landraces of pearl millet (pennisetum glaucum (L.) R. Br.) were evaluated under drought stress and optimum (non-stress) conditions to elucidate their response to drought and to identify the traits that are associated with drought tolerance/escape. The landraces differed significantly for flowering time, yield-contributing traits and yielding ability under stress and non-stress conditions. There was a wide range in the drought response index (-8.5 to 13.9) among the landraces and it accounted 73% of variation in grain yield obtained under stress conditions. Yielding ability of the landraces dependent upon different characters in the presence and absence of drought stress emphasising manipulations of different traits for enhancing yield under stress and non-stress conditions. Higher panicle number and greater biomass accumulation proved to be the target traits for improving grain yield under stress but not for enhancing yield under non-stress conditions. Higher individual grain mass was associated with drought escape, while higher grain number panicle-1 and harvest index were associated with drought tolerance. The landraces having high degree of drought tolerance have been identify for use in developing drought tolerant cultivars.
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Date 2019-06-20T09:22:41Z
2019-06-20T09:22:41Z
2003-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/20664
 
Language English
 
Relation Not Available;
 
Publisher Not Available