黄淮旱地冬小麦表观性状演变及相关性比较分析

Evolution and Correlation Analysis of Apparent Traits of Winter Wheat in Huanghuai Dry Land

为客观地评价黄淮旱地冬小麦区域试验主要性状的变化规律及其相互间的关系,充分挖掘区试观察记载的大数据性状资料的利用率,探索利用区试性状演变规律促进提高育种性状选择准确率的可能性,为旱地小麦育种性状选择提供支撑,本研究对2000-2015年度国家黄淮冬麦区旱地区试历年参试品种汇总的16个表观数量性状进行整理归纳分类,按产量性状、抗逆广适性状、品质性状3个指标性状分类,以区试分组为依据,对旱肥、旱薄两类参试品种性状差异及表现趋势进行比较,并运用简单相关分析和典型相关分析方法,研究比较参试品系的一般性状(育种辅助选择的亚性状或间接性状)和目标性状(品种审定直接考察要求达标的性状)相互间的遗传相关性,分析比对典型性状因子及其对旱地小麦育种性状选择和评价的作用,为提高优良性状选择利用提供参考与借鉴。

The study aims to evaluate the changes of the main traits of winter wheat in the Huanghuai dryland regional test and the relationship between the traits,and fully explore the utilization rate of the big data of traits in the regional trial and the possibility of using succession characteristics to improve the breeding accuracy of the selected traits,thus providing support of trait selection in wheat breeding.16 apparent quantitative traits collected from tested varieties in the Huanghuai winter wheat dryland region in the year 2000-2015 were summarized and classified.Taking the yield traits,broad tolerance traits,and quality traits as the three index traits,based on the grouping of regional test,the differences in traits and performance trends of two kinds of tested cultivars were compared,and simple correlation analysis and typical correlation analysis method were used to study the general traits(sub-traits or indirect traits for breeding-assisted selection)and target traits(required traits of variety approval direct inspection)of the tested lines.Typical trait factors and their effects on selection and evaluation of dryland wheat breeding traits were analyzed to improve the selection of excellent traits.