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A Field Screening Technique for Drought Tolerance†

Published online by Cambridge University Press:  03 October 2008

Prem Sagar  and
R. L. Kapoor
Prem Sagar
Affiliation:
Department of Plant Breeding, Haryana Agricultural University, Hisar-125 004, India
R. L. Kapoor
Affiliation:
Department of Plant Breeding, Haryana Agricultural University, Hisar-125 004, India
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Summary

A simple yet effective field screening technique for estimating drought tolerance is described. It involves growing plants in sloping plots which are opposite each other and connected to sub-channels lined with polyethylene sheet. The slopes are designed to achieve instant surface run-off and the sub-channels connected to a main channel for rapid drainage of rain-water. Stress is created at different stages of crop growth by manipulating the timing of irrigation and covering the soil surface with polyethylene sheeting. The technique proved effective even in the monsoon season which is characterized by irregular intensity and distribution of rainfall. Data on six characters for 80 genotypes of pearl millet grown in six artificially created environments representing different levels of moisture stress are discussed. The ‘slope’ technique was effective in creating different levels of moisture stress at various stages of crop growth and in distinguishing categories of genotypes by their relative drought tolerance.

Type
Research Article
Information
Experimental Agriculture , Volume 22 , Issue 2 , April 1986 , pp. 117 - 122
Copyright
Copyright © Cambridge University Press 1986

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