杂交油菜产量与相关农艺性状的灰色关联度分析

[目的]研究杂交油菜选育过程中各农艺性状对油菜产量的相对重要性。[方法]利用灰色系统理论，对油菜产量与株高等9个农艺性状的关联度进行分析。[结果]株高等9个农艺性状对产量的重要性依次为：每角粒数〉单株有效角果数〉主花序有效角果数〉分枝部位〉结角密度〉千粒重〉株高〉一次有效分枝数〉主花序有效长。影响杂交油菜产量的经济性状的作用依次为：每角粒数（r=0．4169）〉单株有效角果数（r=0．3927）〉主花序有效角果数（r=0．3204）〉分枝部位（r=0．3049）〉结角密度（r=O．2947）〉千粒重（r=0．2921）〉株高（r=0．2741）〉一次有效分枝数（r=0．2602）〉主花序有效长（r=0．21917）。[结论]该研究为杂交油菜的选育及其新组合的综合评定提供了一定的科学依据。

Grey Correlation Analysis on the Yield of Hybrid Rape and Its Related Agronomic Characters

[Objective] The purpose was to study the relative importances of various agronomic characters to the yield of rape in the breeding process of hybrid rape.[Method] The correlations between the yield of rape and its 9 agronomic characters such as plant height were analyzed by applying grey system theory.[Result] The importances of the 9 agronomic characters such as plant height to yield were as follows: grains per pod>available pods per plant>available pods on the main inflorescense>branching position>pod den...