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Position: Home > Articles > A Study on the Evapotranspiration and Drought Resistance of 12 Buffalograss[Buchloe dactyloides(Nutt.)Engelm] Accessions Chinese Journal of Grassland 2010,32 (1) 40-47

12份野牛草材料蒸散量及抗旱性的研究

作  者:
谭玉霞;刘荣堂;王显国;牛建忠;徐轩
单  位:
中国农业大学动物科技学院草地所;甘肃农业大学草业学院;北京市天坛公园
关键词:
野牛草;蒸散量;抗旱性
摘  要:
在不同水分条件下研究了12份野牛草材料的蒸散量与抗旱性,结果表明:水分充足条件下各材料间除T09蒸散量较高外,其他材料差异不显著(P>0.05);水分胁迫的前18d,材料间有显著或极显著差异(P<0.05或P<0.01),并且随着胁迫时间延长各材料蒸散量、土壤含水量、叶片相对含水量均呈下降趋势,游离脯氨酸、丙二醛和相对电导率则为增加趋势;蒸散量与各抗旱指标间均显著或极显著相关;通过聚类分析,将12份野牛草划分为3个抗旱级别,即较强抗旱材料T01,中度抗旱材料T02、T03、T04、T05、T06、T07、T10和T11,较弱抗旱材料T08、T09和T12。
译  名:
A Study on the Evapotranspiration and Drought Resistance of 12 Buffalograss[Buchloe dactyloides(Nutt.)Engelm] Accessions
作  者:
TAN Yu-xia1,2,LIU Rong-tang2,WANG Xian-guo1,NIU Jian-zhong3,XU Xuan1(1.Institute of Grassland Science,China Agricultural University,Beijing 100193,China;2.Pratacultural College,Gansu Agricultural University,Lanzhou 730070,China;3.Beijing Tiantan Park,Beijing 100061,China)
关键词:
Buffalograss;Evapotranspiration;Drought resistance
摘  要:
The evapotranspiration of 12 buffalograss accessions in different water condition and their drought resistance were studied.The results showed that under sufficient irrigation,they had not significant difference among accessions(P>0.05) except T09,and before 18 days of the water stress,they had significant difference among accessions(P<0.05 or 0.01).As the stress of drought was intensified,the evapotranspiration,soil water content,relative water content in leaves decreased;oppositely,content of POD,MDA and relative electrical conductivity rate were increased.The evapotranspiration were significantly correlated with drought resistance indexes(P<0.05).With cluster analysis,12 buffalograss accessions were divided into three grades of the drought resistance,the strong drought resistant materials: T01,the medium drought resistant materials: T02,T03,T04,T05,T06,T07,T10,T11,and the weak drought resistant materials: T08,T09,T12.

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