Study of the effects of drought stress on seed germination factors and activity of antioxidant enzymes in Bean genotypes (Phaseolus vulgaris L.)

Document Type : Research Paper

Authors

1 Postgraduate / University of Tehran

2 Professor of University of Tehran

3 Associate Professor ? University of Tehran

Abstract

Drought stress is one of the major causes of reducing crop improvement. To evaluate the effects of drought tolerance on seed characteristics the tolerant and sensitive seed genotypes of common bean were tested in petri dishes containing polyethylene glycol 6000 with concentration equal to 0, -4, -8 and -12 bar, according to CRD design with three replications in factorial arrangement. 9 day later, radice and caulice lengths were scored. The results showed that drought stress decreased rate and percentage of germination, radice and caulice lengths, fresh and dry weight of radices, and fresh and dry weight of caulice. To study biochemical processes in germination stages, genotypes 18, 25, and 29 and commercial variety of Yas were screened for polyethylene glycol 6000 with concentration equal to 0, -4, -8 and -12 bar. By evaluating of the studied traits and indices, with considering physiological and biochemical characteristics, it could be conclude that genotype 1189 was drought tolerant one in seedling stage in comparison to the rest of genotypes and Yas as a check variety.

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References

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Iranian Journal of Field Crop Science
Volume 49, Issue 1
June 2018
Pages 11-27

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History

  • Receive Date: 28 August 2016
  • Revise Date: 04 March 2017
  • Accept Date: 03 April 2017
  • Publish Date: 22 May 2018

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