Physiological basis for increasing and stablising yield under drought in sorghum

Seetharama, N and Sivakumar, M V K and Bidinger, F R and Singh, Sardar and Maiti, R K and Reddy, B V S and Peacock, J M and Reddy, S J and Mahalakshmi, V and Sachan, R C and Raj, A S and Murthy, S R K and Narayanan, A and Kannangara, T and Durley, R C and Simpson, G M (1983) Physiological basis for increasing and stablising yield under drought in sorghum. Proceedings of the Indian National Science Academy, B., 49 (5). pp. 498-523.

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Although drought causes more yield losses than combined effect of all biotic stress factors, the progress in increasing yield under water-limited conditions is small. Major reasons for slow progress are listed and the relationships between crop productivity and drought resistance are examined. Adapations to drought in sorghum are discussed in order of their utility in the immediate future: phenological, morphological, physiological and biochemical. Results of interdisciplinary research in understanding drought resistance are discussed with respect to available screening methods, genetic variability and breeding methods. Breeding and managment strategies should be aimed at increasing transpirational water use throughout the season and decreasing injury caused by drought.

Item Type: Article
Uncontrolled Keywords: Sorghum bicolor, drought resistance, grain yield, adaptation
Subjects: Mandate crops > Sorghum
Depositing User: Users 6 not found.
Date Deposited: 17 Aug 2011 09:55
Last Modified: 17 Aug 2011 10:25
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Acknowledgement: We are grateful of Drs G Alagarswamy, A Anand Kumar, D J Andrews, L R House, N P Saxena, and P K Verma for going through the first draft. The version has resulted from the valuable comments of Drs H Doggett, I E Hanson and S K Sinha. Thanks are due to M Vidya Sagar, R Kanaka Reddy, S Ramakrishna, and T H Rao for their research assistance; to Shanta Maria and I N Rao for typing the manuscript, and to V Ramesh for drawing the figures.
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