Resistance to Drought and Salinity: Avenues for Improvement

Passioura, J.B. (1986) Resistance to Drought and Salinity: Avenues for Improvement. Australian Journal of Plant Physiology, 13 (1). pp. 191-201.

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Various techniques for improving the resistance of plants to drought or salinity are discussed in relation to a notional spectrum ranging from rationality to random search. The rational end of the spectrum is exemplified by the control of phenology so that flowering occurs at an optimal time; the random end by wide crosses, such as that between wheat and Elytrigia, which give the remote hope'that the high yield-potential of one will combine with the toughness of the other. Most of the lechniques occupy the middle ground and involve selecting for characters whose protagonists have strong, but often poorly articulated, hunches that the characters will confer resistance to drought or salinity on the plants possessing them. For drought resistance of grain crops. the possible worth of many of these characters is discussed in relation to their likely impact on improving a crop's ability to (a) extract water from the soil, (b) produce dry matter given a limited water supply, and (c) convert dry matter in to grain.

Item Type: Article
Author Affiliation: Division of Plant Industry, CSIRO, Canberra
Subjects: Plant Protection
Soil Science and Microbiology
Plant Physiology and Biochemistry > Biochemistry
Divisions: General
Depositing User: Mr Arbind Seth
Date Deposited: 07 Aug 2013 05:02
Last Modified: 07 Aug 2013 05:02
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