棉 花 学 报    Cotton Science   2009，21(1)：46－50

Effects of Heat Shock Treatment on the Stress Tolerance in Cotton
FANG Li-ping，WANG Rui-qing，YANG Guo-zheng^*
(College of Plant Science and technology, Huazhong Agricultural University , Wuhan 430070, China)

Abstract: Effects of heat shock at different growth phases and germinating on stress tolerance in cotton were studied. Results indicated that heat shock treatment increased the activity of antioxidant enzyme, especially the activity of SOD, POD, CAT, and decreased cellular injury caused by reactive oxygen species, and decreased the content of MDA in cotton, thus protected cotton from injury in high temperature. So heat shock treatment can increase cotton′s stress tolerance and the boll retention in high temperature.
Key words:cotton; heat shock treatment; antioxidant enzyme (SOD, POD, CAT); stress tolerance
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