Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (21): 98-101.doi: 10.11924/j.issn.1000-6850.casb15020068

Special Issue: 生物技术 棉花 农业气象

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Evaluations of Drought Resistance among Different Cotton Varieties

  

  • Received:2015-02-11 Revised:2015-03-23 Accepted:2015-03-25 Online:2015-07-28 Published:2015-07-28

Abstract: The aim was to study the effect of drought resistance on proline, water soluble sugar, malondialdehyde content and protective enzyme activities in different cotton varieties. A field simulating dry method was used and the two treatments, drought stress and irrigation conditions, were set up. Drought resistance abilities of tested varieties were evaluated by subordinate function values analysis. The results were as follows: the contents of proline, water soluble sugar, malondialdehyde increased in drought stress treatment. The enzymatic activities of catalase, superoxide dismutase and peroxidase also increased, and then the drought resistance strengthened. The drought resistance of cotton was a complex physiological mechanism. Using subordinate function values analysis, the drought resistance of 4 cotton varieties was as follows:‘Hengyou 12’ > ‘Jimian 958’ > ‘Zhong 177’ > ‘Hanza 306’ .