茎瘤芥(榨菜)数量性状的相关遗传力与选择指数分析  

Analysis about Correlation Heritability and Selection Indexes of Quantitative Characters of Tumorous Stem Mustard

作　　者：刘义华 张召荣 冷蓉 周光凡 范永红 肖丽 李娟 

机构地区：[1]重庆市涪陵农业科学研究所,重庆408000

出　　处：《中国蔬菜》2009年第16期36-40,共5页China Vegetables

基　　金：重庆市自然科学基金项目(8676)

摘　　要：以23份茎瘤芥代表性品种资源为试材,利用相关遗传力研究了茎瘤芥数量性状的相关遗传关系,并计算分析瘤茎产量和与产量关系较密切的田间易选性状所组合的各种选择指数。结果表明:各性状与瘤茎产量的相关遗传力均低于瘤茎产量的遗传力,进一步分析表明茎瘤芥育种进行综合间接选择效果并不十分理想,但在营养生长期作间接选择的效率与对瘤茎产量作直接选择的效率相当,育种时加强营养生长期的选择并辅助考虑瘤茎横径或茎/叶,既可做到不破坏中选种株又能基本实现茎瘤芥丰产、优质和生态适应性较强的同步改良。In the present experiment, 23 tumorous stem correlative genetic relations with correlation heritability among the quantitative characters. Selection index was also evaluated between tumorous stem yield and quantitative characters that were significantly and hereditarily correlated with tumorous stem yield. The results showed that correlation heritability between quantitative characters and tumorous stem yield was below the heritability of tumorous stern yield. More analysis found that synthesis indirect selection had no distinct superiorities, and efficiency of indirect selection by vegetative duration corresponded to that of direct selection on yield. High yield breeding combining with strong ecological adaptability and good quality should be largely depended on later maturity and tumorous stem diameter or higher ratio of stem and leaf.

关 键 词：茎瘤芥 数量性状 相关遗传力 选择指数 

分 类 号：S637.3[农业科学—蔬菜学]