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《Acta Agriculturae Boreali-Occidentalis Sinica》 2010-04
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A comparative Study on Drought Resistance and Frost Resistance of Five Kinds of Introduced Grasses

YANG Shunqiang1,YANG Gaihe2,REN Guangxin2,WANG Lei1,WU Yinmei1 and CHEN Pingzhao3(1.Chemistry Department of Zhao-tong Teacher's College,Zhaotong Yunnan 657000,China;2.Northwest A&F University,College of Agronomy,Yangling Shaanxi 712100,China;3.Educational Administration Department of Zhao-tong Teacher's College,Zhaotong Yunnan 657000,China)  
Using Poa aalpine,Elymus junceus,Agropyron inerme,Agropyron inerme(Secar) and Agropyron inerme(Goldar) as experimental materials,the dynamic variation of proline,soluble protein,malonaldehyde(MDA) and superoxide dismutase(SOD) in the different grass species were investigated in different growth phases treatments under water and temperature stress condition.The results indicated that for all the materials,the variations of proline and soluble protein content continually increased with aggravated water stress,increasing firstly and then decreasing with temperature stress the variations of SOD content continually increased with water stress and assumes the change tendency of increase-reduce-increase appeard under temperature-controlled condition;the variations of MDA content continually increased with water stress,only in Poa aalpine MDA content increased obviously under temperature-controlled condition and the others the change was not remarkable.At last,using fuzzy mathematics method,the drought resistance ability of those gramineous grass species was evaluated as Elymus junceusPoa aalpineAgropyron inerme(Goldar)Agropyron inerme(Secar)Agropyron inerme,the cold resistance ability of those gramineous grass species was evaluated as Poa aalpineElymus junceusAgropyron inerme(Secar)Agropyron inermeAgropyron inerme(Goldar).
【Fund】: 国家林业局948项目(2006-4-11);; 昭通师范高等专科学校第三批校级课题(XJKZ0901);; 西北农林科技大学人才基金(01140512)
【CateGory Index】: S54
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