四川小豆地方品种产量性状的通径分析

PATH ANALYSIS OF EIGHT YIELD TRAITS OF LOCAL VARIETIES OF SMALL BEAN IN SICHUAN

本文对13个四川小豆（V．angularis）地方品种株高、有效分枝、单株荚数、单株粒数、单荚粒数、百粒重、荚长和单株产量（Y）进行了通径分析．结果表明：单株荚数、百粒重对单株产量的直接效应和决定系数极显著，其它性状直接效应不显著且主要通过这两个性状起间接作用．故在小豆育种和栽培中，以选择单株荚数和百粒重为主，并协调两者间的关系，对取得高产具有重要作用。

Path analysis was conducted for the plant beight (x1) t the numberof effective brancbes (x2) , the number of yods Fer plant (x3) , the numbet ofgrains per Plant (x4), the numher of graina per pod (x5) , 100-graias weight (x6) ,the length of pod (x7) and the grain weith per plant (Y) in 13 local varietiesof small bean in Sichuan. The results indicated that the direct effects were thekighest for x3, x6, the direct effects of othet traits were small, Total effectsof x3, x6 for Y were not the higbest, other traits indirectly contributed to Ythrougb x3, x6, In order to get higher yield, x3, x6 were the most important tothe breeding and cultivation.