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

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Relation http://oar.icrisat.org/1378/
 
Title Genetic variation in drought response of landraces of pearl millet (Pennisetum glaucum (L.) R. Br.)
 
Creator Yadav, O P
Weltzien, E
Bidinger, F R
 
Subject Millets
 
Description Crop landraces are considered as a good germplasm source for adaptation to prevalent stress conditions. In this study, 105 landraces of pearl millet (P. glaucum) 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 for 73% of variation in grain yield obtained under stress conditions. The yielding ability of the landraces depended upon different traits in the presence and absence of drought stress, emphasizing 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 per panicle and harvest index were associated with drought tolerance. Fifteen landraces having high degree of drought tolerance were identified for use in developing drought tolerant cultivars.
 
Date 2003
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/1378/1/IndiJGenet63_1_37-40_2003.pdf
Yadav, O P and Weltzien, E and Bidinger, F R (2003) Genetic variation in drought response of landraces of pearl millet (Pennisetum glaucum (L.) R. Br.). Indian Journal of Genetics and Plant Breeding, 63 (1). pp. 37-40.