早熟甘蓝几个性状的相关和通径分析  

Correlation and Path Coefficient Analysis of Traits in Early-maturing Cabbage

作　　者：吉立柱[1] 贾占温[1] 孙德岭[1] 

机构地区：[1]天津科润蔬菜研究所,天津300384

出　　处：《天津农业科学》2005年第3期12-13,共2页Tianjin Agricultural Sciences

基　　金：国家"863"项目(2002AA207012-5);天津市科技攻关项目(05YFGZNC01308)

摘　　要：对10个早熟甘蓝品种(系)几个性状进行了相关和遗传通径分析,结果表明:其他几个性状对叶球重的相对重要性依次为叶球纵径(1.1472)>球形指数(-0.8110)>中心柱长(-0.6441)>株高(0.6250)>紧实度(0.4207),而遗传相关系数分别为:0.3266,-0.8033,0.5867,0.9431,-0.5242。因此,提高叶球产量应主要考虑提高株高和叶球纵径,同时兼顾球形指数的降低。Five traits namely plant height, index of head shape, longitudinal diameter of head, core length and density of head in 10 early-maturing cabbage varieties were studied with head weight by correlation and genetic path coefficient analysis. The results were following： the order of the importance of traits on head weight was longitudinal diameter of head（1.1472）〉index of head shape（-0.8110 ）〉core length （-0.6441 ）〉 plant height （0.6250）〉 density of head （0.4207）, and the corresponding genetic correlation coefficients were 0.3266, -0.8033, 0.5867, 0.9431 and -0.5242.Therefore, plant height and longitudinal diameter of head might be mainly considered in order to increase head weight in cabbage breeding.

关 键 词：甘蓝 相关 通径系数 

分 类 号：S635.1[农业科学—蔬菜学]