2010•Nongye xiandaihua yanjiuRequires access
Study of Relationship of Canopy Temperature with Drought Resistance and Water Use Efficiency on Different Genotype Winter Wheat
Gang Zhao, Fan Tinglu, Shangzhong Li, Yong Wang, Lei Wang, Dang Yi, Xiaoming Tang, Jianjun Zhang, Guoyu Wang
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Abstract
This trial measured the 40 genotypes winter wheat canopy temperature in grain filling stage,and studied the relationships of canopy temperature with drought resistance index and water use efficiency at Zhenyuan of Gansu Province in 2006-2007.The results showed that the difference of canopy temperature,drought resistance index and water use efficiency in 40 genotypes winter wheat grain in filling stage was extremely significant under different water conditions.Correlation analysis results showed that drought resistance index and water use efficiency was highly significant positive correlation (r=0.769 ***);drought resistance index and canopy temperature was highly significant negative correlation (r=0.772 ***),the average value of 7 drought resistance varieties canopy temperature lower 1 ℃ than 40 varieties;and the average value of 11 drought sensitive species higher 0.68℃ than the 40 varieties mean,this shows that canopy temperature can reflect the drought resistance of variety.