抗灰斑病大豆品种农艺性状、品质性状与产量性状的典型相关分析

为了探究抗灰斑病大豆品种农艺性状、产量性状、品质性状间的相互关系,选用了近年黑龙江省审定的17个抗灰斑病的大豆品种为试验材料,对其各性状及性状组基因型值进行相关与典型相关分析,并建立了以产量性状为目标的各性状选择指数。结果表明:对单株产量影响最大的是产量性状组的单株粒数、3粒荚数、单株荚数;农艺性状组的生育期、单株节数及株高,农艺性状与产量性状组间以正相关为主;生育日数与百粒重呈正相关、底荚高与4粒荚数呈负相关;品质性状与农艺性状组间典型相关系数达显著水平;且生育日数与蛋白质含量呈正相关,产量性状的选择应以株高中等、生育期适中、单株多有效节数、较低的结荚部位、粒中等大、单株粒数多为选育目标,蛋白质含量的提高可通过生育日数及百粒重等性状间接达到。

Canonical Correlation Analysis for Agronomic Trait Group,Quality Trait Group and Yield in Soybean Immune to Grey Speck Disease

To study the relationship between agronomic trait groups yield and quality trait groups of grey speck immune soybean,Canonical correlation analysis in 17 soybean cultivars and the establishment of a comprehensive selection index for yield are reported in this paper.The result showed that: the most important factors for seed yield are yield group’s seed per plant,3-seed pod,pods per plant;agronomic trait group’s growth period,knot per plant and plant height,agronomic character and yield group are positively correlated.Growth days and 100-seed weight are positively correlated,bottom pod height and 4-seed pod are negatively correlated;canonical correlation coefficient between agronomic character and quality group has reached the significant level;growth days and protein content are positively correlated,middle height plant,moderate grow period,more knots per plant,low pod position,middle seed,more seed per plant in yield character should be chose as breeding goal,protein content can be improved by selection of grow days and 100-seed weight character.