Physiological Mechanisms of Coronatine to Raise Drought Resistance in Winter Wheat Plants

doi:10.3969/j.issn.1000-7091.2013.02.018

Abstract

Abstract: In order to study the effect of spraying coronatine on winter wheat,using three winter wheat varie-ties,Jimai 22,Liangxing 99 and Changwu 134 under field conditions with no irrigations,the 1 μmol/L coronatine were sprayed respectively at overwintering,reviving and flowering stage,and the effects of coronatine on the morpho-logical and physiological characteristic were examined. The results showed that regardless of variety,spraying coro-natine could improve in varying degrees the relative water content,chlorophyll content,praline content(PRO),solu-ble sugar and the activity of superoxide dismutase(SOD),and reduce the malonaldehyde(MDA)content. Comparing three spraying stage,thegreen stage is better than the others.

Key words: Winter wheat, Coronatine, Drought resistance, Physiological mechanism

CLC Number:

S512. 01

WANG Yan-jing, ZANG He-cang, ZHANG Qian, CHEN Jia-na, DUAN Liu-sheng, LI Zhao-hu, LI Jian-min. Physiological Mechanisms of Coronatine to Raise Drought Resistance in Winter Wheat Plants[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(2): 96-102. doi: 10.3969/j.issn.1000-7091.2013.02.018.

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