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Sensitivity of Chickpeas (Cicer arietinum) to Hot Temperatures during the Reporductive Period†

Published online by Cambridge University Press:  03 October 2008

R. J. Summerfield ,
P. Hadley ,
E. H. Roberts ,
F. R. Minchin  and
S. Rawsthorne
R. J. Summerfield
Affiliation:
University of Reading, Department of Agriculture and Horticulture, Plant Environment Laboratory, Shinfield, Reading RG2 9AD, England
P. Hadley
Affiliation:
University of Reading, Department of Agriculture and Horticulture, Plant Environment Laboratory, Shinfield, Reading RG2 9AD, England
E. H. Roberts
Affiliation:
University of Reading, Department of Agriculture and Horticulture, Plant Environment Laboratory, Shinfield, Reading RG2 9AD, England
F. R. Minchin
Affiliation:
University of Reading, Department of Agriculture and Horticulture, Plant Environment Laboratory, Shinfield, Reading RG2 9AD, England
S. Rawsthorne
Affiliation:
University of Reading, Department of Agriculture and Horticulture, Plant Environment Laboratory, Shinfield, Reading RG2 9AD, England
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Summary

Plants of two genotypes of chickpea (Cicer arietinum), classified as early or late-maturing in the field, and relying either on dinitrogen fixation by nodules or on nitrate-N, were grown in various simulated tropical environments in growth cabinets. Plants were transferred between cabinets at various times so that they experienced either warm (30°C) or hot (35°C) days (both in combination with a typical night temperature of 10°C) for different durations of reproductive growth, after growing in average (30°C day - 10°C night) or warmer than average (30° - 18°C) temperatures for the first 28 days from sowing and then average temperatures until transferred into the hot regime. Diurnal vapour pressure deficits were adjusted so that plants experienced a constant atmospheric relative himidity (70%) in all thermal regimes. The greater the proportion of the reproductive period spent in hot days the smaller the seed yields produced; plants transferred at 50% flowering were almost barren. The implications of these data for breeding chickpeas well adapted to hot environments are discussed.

Type
Research Article
Information
Experimental Agriculture , Volume 20 , Issue 1 , January 1984 , pp. 77 - 93
Copyright
Copyright © Cambridge University Press 1984

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References

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