河南农业科学2018，Vol.47Issue(12)：102-109,8.DOI:10.15933/j.cnki.1004-3268.2018.12.016
大白菜主要表型性状的配合力评价及遗传力分析
Study on the Combining Ability and Heritability Analysis of the Main Phenotypic Traits in Chinese Cabbage(Brassica rapa L. ssp. pekinensis)
摘要
Abstract
In order to further explore the inheritance of the main phenotypic traits and provide theoretical basis for select elite parents and excellent combinations in Chinese cabbage breeding.8 pure inbred lines with differential gene were taken as parents, and the progeny of 8 pure inbred lines and 28 crossing combinations were obtained according to genetic design.11 characters including plant height, plant width, the maximum length of leaf, the maximum width of leaf, petiole width, the total number of inner leaf, the leaf head index, the gross weight of single leaf head, the net weight of single leaf head, the rate of net leaf head, the core length and the rate of net leaf were detailedly investigated in parents and F1generation.And then, genotype variance analysis, combining ability evaluation and genetic analysis were carried out.The results showed that, the difference of the general combining ability(GCA) and specific combining ability(SCA) in all the phenotypic traits was at 1％significant level, except for the leaf head index at 5％significant level.Plant width, plant height, the maximum length of outer leaf, the maximum width of outer leaf, petiole width and the rate of net leaf, obviously showed the positive GCA effect in the parents P1(1305), P2(Shan 5555), P3(J Baihua) and P4(Q Die), which were ideal parents for improving the yields.However, plant width, plant height, the maximum length of outer leaf, the core length and petiole width showed the negitive GCA effect and the total number of inner leaf, the leaf head index showed the positive GCA effect in the parents P6(C Huang) and P7(H Wa), which were used as the key parents for selecting combination with traits including early maturity, small plant height, many leaves and bolting re-■Wa) could be regarded as the excellent combinations with ideal agronomic characters such as plant type, inner leaves and net weight of single head.Above all, the parents P1(1305) and P4(Q Die) could be used to adjust the plant height and the plant width, and improve the net weight of single leaf head.The parent P7(H Wa) could be served to increase the total number of inner leaves and decrease the core length.While the parent P8(G Li) could be taken alter the leaf head index and decrease the core length.关键词
大白菜/表型性状/遗传力/一般配合力/特殊配合力/狭义遗传力Key words
Chinese cabbage/Phenotypic trait/Heritability/General combining ability/Specific combining ability/Narrow-sense heritability分类
农业科技引用本文复制引用
吴涛,董彦琪,肖艳,王晓玲,原连庄,原让花,孙玉镯,周俊国..大白菜主要表型性状的配合力评价及遗传力分析[J].河南农业科学,2018,47(12):102-109,8.基金项目
新乡市科技重大项目(ZD1401) （ZD1401）
