春小麦碳同位素分辨率与相关生理性状的遗传相关分析

摘要

In order to provide references to the research of water use efficiency , 17 spring wheat lines were grown in Yinchuan site in 2007. The phenotypic corr elation and genetic correlation analysis based on the remarkable generation vari ance analysis and simple correlation were carried on. The results showed that ge notypes are significant different. Relationship between △Gm and △Sm, W UE, maL, Ci, Gs and Ci/Ca are extremely positively genetic correlated,but with Pn in flowering stage and Tl in filling stage are significantly ne gatively correlated respectively; △Sm is extremely positively genetic corre lated with WUE, maL, Ci, Gs, Ci/Ca in flowering stage, while negatively gene tic correlated with Tl and Pn in flowering stage. At last it demonstrate s the relationship between △ and WUE, ash content and so on, and it con cludes that a good genetic correlations among relevant traits and △.%用17份春小麦品种作为试验材料,在宁夏灌区银川测定碳同位素分辨率(△)、水分利用效率 (WUE)、灰分、比叶重、光合气体交换参数,并在方差分析显著的基础上,进行遗传、表型和环境相关分析和简单相关分析.结果表明:各性状在品种间存在显著或极显著差异 .△Gm与Sm、WUE、maL、 Ci、Gs、Ci/Ca均呈极显著正遗传相关,与开花期Pn及灌浆期Tl呈显著负遗传相关;△S m与WUE、maL、开花期气体交换参数(Ci、Gs、Ci/Ca)的遗传相关性达到极显著正相关水平,与Tl、开花期Pn的遗传相关达到极显著负相关水平,并且它们之间的遗传相关主要受遗传基因的控制,环境条件对其相关性影响较小,maL与△的显著的遗传相关,作为△的替代指标有较大的潜力,认为在灌区适合种植和培育高秆型、高碳同位素分辨率型和低温型小麦.