草业学报2011，Vol.20Issue(3)：108-114,7.
PEG胁迫对不同地理种源沙拐枣生理特性的影响
Effects of PEG stress on physiological characteristics of Calligonum mongolicum in different geographical provenance
摘要
Abstract
To simulate the solution drought stress condition with different concentrations PEG-6000, we studied the effects of drought-resistant of physiological characteristics in Calligonum mongolicum seedlings from different geographical provenance in Gansu province. The results indicated that content of Pro increased with the stress time prolong, content of SS(soluble sugar) raised first, then declined, and increased continually later,content of MDA(malondehyde) increased first and then decreased, SOD(superoxide dismutase) activity presented “M” tendency, POD(peroxide enzyme) activity increased first and then decreased. The seedlings of three geographical provenances generally presented a similar tendency under different concentrations and long-term stress while with the significant difference(P＜0.05). The increasing range of Pro content was Wuwei＞Jiuquan＞Zhangye, soluble sugar content was Jiuquan＞Zhangye＞Wuwei, MDA content was Wuwei＞Zhangye＞Jiuquan, SOD activity was Wuwei＞Zhangye＞Jiuquan, POD activity was Jiuquan＞Wuwei＞Zhangye. There existed difference of drought resistance mechanism of C. mongolicum,but the adjustment of protection enzymes was an important physiological reaction to the environment adaptability.关键词
沙拐枣/PEG胁迫/地理种源/生理特性Key words
Calligonum mongolicum/ PEG stress/ geographical provenance/ physiological characteristics分类
农业科技引用本文复制引用
邱真静,李毅,种培芳..PEG胁迫对不同地理种源沙拐枣生理特性的影响[J].草业学报,2011,20(3):108-114,7.基金项目
国家农业成果转化资金项目(2009GB2G100375)和甘肃省农业科技成果转化资金项目(0805XCNA063)资助. （2009GB2G100375）
