云南小油菜主要农艺性状的相关及通径分析  

Correlation and Path Analysis of Major Agronomic Traits of Small Rapeseed in Yunnan

作　　者：张培竹 彭少丹[2] 马忠琴[2] 厦国银[2] 刘中桥[2] 林良斌[2] 

机构地区：[1]云南省罗平县农业局,云南罗平655800 [2]云南农业大学农学与生物技术学院,云南昆明650201

出　　处：《甘肃农业科技》2009年第8期12-15,共4页Gansu Agricultural Science and Technology

基　　金：云南省自然科学基金"云南省野生油菜资源多样性及亲源关系的研究"(2004C0035M)部分内容

摘　　要：对17份云南小油菜材料的主要农艺性状进行相关及通径分析的结果表明,各性状与单株产量的相关遗传力均小于单株产量的遗传力,因此利用某一个性状作间接选择比对单株产量作直接选择的效率低。通过株高、二次有效分枝数和单株角果数对单株产量进行直接选择或间接选择,效果都不明显或有负面影响;一次有效分枝数、角果粒数和分枝部位对单株产量的影响是通过直接作用和间接作用来实现的;在早期对一次有效分枝角果数与二次有效分枝角果数两个性状的选择会更加有效,同时进行间接选择会增强效果。17 small rapeseeds were used as materials in Yunnan and correlation and path of the major agronomic traits were analyzed. The results indicated that correlative heritability between single plant yield and the other agronomic traits were lower than the heritability of single plant yield, and the indirect-selection efficiency of sole quantitative traits is lower than direct-selection efficiency of single plant yield; The direct or indirect selection of the single plant yield by the height of the plant, the number of second effective branches and the number of pods per plant＇s were no obvious or negative; The impact of number of first effective branches, number of grains per pod and branching position on single plant yield was realized both directly and indirectly; During early stage, the selection of the pod number of first effective branches and the pod number of secondary effective branches are more effective, and its indirectly selection would be enhanced.

关 键 词：云南小油菜 农艺性状 通径分析 遗传力 相关遗传力 

分 类 号：S565.4[农业科学—作物学]