中国农业科学2013，Vol.46Issue(10)：1984-1993,10.DOI:10.3864/j.issn.0578-1752.2013.10.003
小麦代换系耐低磷生理性状的主成分分析及综合评价
Principal Component Analysis and Comprehensive Evaluation on Physiological Traits of Tolerance to Low Phosphorus Stress in Wheat Substitution
摘要
Abstract
[Objective] The physiological indices of substitution lines in different phosphorus treatments were studied to select species of tolerance to low phosphorus stress.[Method] The comprehensive tolerance to low phosphorus stress of low phosphorus tolerance coefficient (LPTC) of soluble sugar,soluble protein content,SOD activity,POD activity,MDA content,leaf chlorophyll content,corticoid content,Pn,Tr,Gs,Ci,Fv/Fm of Chinese Spring (CS)-Synthetic 6x substitution lines as well as their parents were evaluated by principal components analysis and cluster analysis.[Result] The results showed that the 14 single indexes could be classified into 7 independent comprehensive components.The cluster analysis was used to divide the 21 substitution lines and their parents into three types of tolerance to low phosphorus.2A substitution line and Synthetic 6x belonged to high tolerance types to low phosphorus stress; Chinese Spring and 4A,7A,2B,1D and 3D substitution lines belonged to poor tolerance types to low-phosphorus stress.The others including 1A,3A,5A,6A,1B,3B,4B,5B,6B,7B,2D,4D,5D,6D,and 7D substitution lines belonged to middle tolerance types to low-phosphorus stress.[Conclusion] The comprehensive evaluation and principal component analysis provide a useful way for selecting species of tolerance to low phosphorus stress in wheat.关键词
小麦代换系/耐低磷特性/生理性状/综合评价/主成分分析Key words
wheat substitution line/ tolerant character to low phosphorus stress/ physiological indices/ comprehensive evaluation/ principal component analysis引用本文复制引用
郑金凤,米少艳,婧姣姣,白志英,李存东..小麦代换系耐低磷生理性状的主成分分析及综合评价[J].中国农业科学,2013,46(10):1984-1993,10.基金项目
科技部"973"计划前期研究专项(2007CB116209)、河北省自然基金项目(C2008000341,C2011204016) （2007CB116209）
