利用小麦重组自交系群体分析SIG与品质性状的相关关系  

Correlation Analysis of SIG and Quality Traits Using Recombinant Inbred Lines(RIL) Population in Wheat

作　　者：刘丽[1] 李卫华[1] 刘伟[1] 刘桂华[1] 曹连莆[1] 

机构地区：[1]石河子大学农学院,新疆石河子832003

出　　处：《石河子大学学报（自然科学版）》2006年第1期70-74,共5页Journal of Shihezi University(Natural Science)

摘　　要：对谷蛋白溶涨指数(swelling index of glutenin,SIG)的测定方法进行了改进,确定了试验的最佳面粉用量为0.24g,并利用小麦京771×Pm97034产生的重组自交系(RIL)群体,对SIG与几个品质性状在RIL群体中的分离和分布规律及其相关性进行了研究。结果表明,这些品质性状在重组自交系群体中呈连续变异,分布频率大致接近正态分布,同时存在双向超亲分离现象。除膨胀势外,SIG与其他5个品质性状之间都具有极显著的相关性,其中与Zeleny沉淀值的相关系数最大(r=0.783),其次是面筋指数、湿面筋含量、GMP含量和碱性水保持力,多元逐步回归分析表明Zeleny沉淀值、面筋指数和碱性水保持力可以解释SIG的69.8%的表型变异。The method of measuring SIG value in wheat were analyzed, when using 0.24g flour weight the result was best. The separation and distribution and its relationship of seven quality traits including SIG value, sedimentation value and Glutenin Index etc. were analyzed by using a set of RIL population （ F8 ） derived from a hybrid cross of Jing771 × Pm9703.The results showed that the frequency of these quality traits in RIL population was approximately nomally distributed and the tremendous transgressive segregation for all traits was observed. Except swelling power, the correlations between other five quality traits and SIG value were significant, and the relativity between Zeleny Sedimentation value and SIG value was the highest, the next were Glutenin Index, Wet gluten content, GMP content and alkaline water retentiveness capacity（AWRC）. Stepwise regression analysis showed that Zeleny Sedimentation value, Glutenin Index and AWRC contributed to 69.8 % of genetic variation of SIG value.

关 键 词：小麦 重组自交系 谷蛋白溶涨指数 品质性状 相关分析 

分 类 号：S512.1[农业科学—作物学]