河南棉花新品种数量性状的典型相关和通径分析

The Analysis of Canonical Correlation and Path Coefficient on Quantitative Characters of New Cotton Varieties of He'nan

通过对河南省2006年春棉品种区试10个品种的产量、植株及纤维品质性状组的典型相关与通径分析得出:选择生育期短、株高中等偏高、果枝节位低、果枝台数多的性状,有利于增加株铃,提高铃质量,并能间接增进主要纤维品质,确为选育高产优质棉花新品种的有效途径。但在选择结铃性强的植株性状时,应防止降低铃质量。从性状相关性间接选择对衣分无效,应通过室内考种择优选取。表11,参11。

The analysis of canonical correlation and path coefficient was applied to study 10 spring cotton varieties in He＇ nan Province in 2006, with cotton yield, plant and fiber quality characters in all included. The result was that the selection of characters of shorter growing period, midhigher plant height, lower first branch height and more branches would be advantageous to increase bells per plant, raise boll weight, and improve the main fiber characters indirectly, which is an effective path to select and breed high yield and good quality new cotton varieties. But when selecting plant characters of strong bearing bells, attention should be paid to prevent the decrease of bell weight. Indirect selection of characteristic relations is invalid to increase lint percentage It is better to select from the best performance tested in the rooms.