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不结球白菜叶子重量性状遗传模型分析
引用本文:韩建明,侯喜林,史公军,耿建峰,邓晓辉.不结球白菜叶子重量性状遗传模型分析[J].遗传,2007,29(9):1149-1153.
作者姓名:韩建明  侯喜林  史公军  耿建峰  邓晓辉
作者单位:1. 南京农业大学作物遗传与种质创新国家重点实验室,南京,210095;洛阳农业科学研究院,洛阳,471022
2. 南京农业大学作物遗传与种质创新国家重点实验室,南京,210095
基金项目:国家自然科学基金,国家重点实验室基金
摘    要:应用主基因+多基因6个世代联合分离分析方法, 对不结球白菜SI×秋017组合的叶片重和叶柄重性状进行了分析。结果表明, SI×秋017组合的叶片重性状遗传受1对负向完全显性主基因+加性-显性多基因(D-4)控制, 主基因加性效应为1.8991, 显性效应为-1.8991; 多基因加性效应为-1.2934, 显性效应为1.7933; 势能比值为-1.3865, 显性度为-1.0000; B1、B2和F2世代群体叶片重的主基因遗传率分别为6.98%、4.33% 和36.08%; B1、B2和F2世代群体叶片重的多基因遗传率为16.03%、7.39%和23.96%。叶柄重的遗传受1对加性主基因+加性-显性多基因(D-2)控制, 主基因加性效应为-1.1457, 显性效应为0; 多基因加性效应为1.3472, 多基因显性效应为2.5788; 势能比值为1.9142, 显性度为0。B1、B2和F2世代群体叶柄重的主基因遗传率分别为31.72%、5.27%和57.94%。B1、B2和F2世代群体叶柄重的多基因遗传率分别为0.42%、4.59%和4.80%。对SI×秋017组合叶片重性状的改良要在晚代选择; 对叶柄重的改良要以主基因为主, 可在早代选择。

关 键 词:不结球白菜  叶片重  叶柄重  主基因+多基因  遗传模型
收稿时间:2006-11-23
修稿时间:2006-11-232007-03-01

Genetic model analysis of leaf-weight traits in non-heading Chi-nese cabbage (Brassica campestris ssp. chinensis Makino)
HAN Jian-Ming,HOU Xi-Lin,SHI Gong-Jun,GENG Jian-Feng,DENG Xiao-Hui.Genetic model analysis of leaf-weight traits in non-heading Chi-nese cabbage (Brassica campestris ssp. chinensis Makino)[J].Hereditas,2007,29(9):1149-1153.
Authors:HAN Jian-Ming  HOU Xi-Lin  SHI Gong-Jun  GENG Jian-Feng  DENG Xiao-Hui
Institution:1. National Key Laboratory of Crop Genetics and Germplasra Enhancement, Nanjing Agricultural University, Nanjing 210095, China; 2. Luoyang Academe of Agriculture Science, Luoyang 471022, China
Abstract:The mixed major-gene plus polygene inheritance model was used to analyze the genetics of leafblade-weight and petiole-weight trait in SIxQiu017 of non-heading Chinese cabbage. The results showed that the leafblade-weight trait was controlled by one pair of negative complete dominant major genes plus additive-dominant polygene (D-4). The additive effect in the major gene was 1.8991, the dominant effect was -1.8991; the additive effect in the polygene was -1.2934, and the dominant effect was 1.7933; the potential ratio was -1.3865, and the dominant degree was -1.0000; the heritability of the major gene was 6.98% in B1 generation, 4.33% in B2 generation, and 36.08% in F2 generation; the heritability of the polygene was 16.03% in B1 generation, 7.39% in B2 generation, and 23.96% in F2 in the leafblade-weight trait. The peti-ole-weight trait in SIxQiu017 was controlled by one pair of additive major genes plus additive-dominant polygene (D-2). The additive effect in major gene was -1.1457, the dominant effect was 0.0000; the additive effect in polygene was 1.3472, and the dominant effect was 2.5788. The potential ratio was 1.9142, and the dominant degree was 0.0000; the heritability of the major gene was 31.72% in B1 generation, 5.27% in B2 generation, and 57.94% in F2 generation. The heritability of the polygene was 0.42% in B1 generation, 4.59% in B2 generation, and 4.80% in F2 in the petiole-weight trait. The improve-ment of leaf-weight trait of SIxQiu017 should be selected in late generation, and the improvement of petiole-weight trait of SIxQiu017 should be selected in early generation.
Keywords:non-heading Chinese cabbage  leafblade-weight  petiole -weight  major gene plus polygene  genetic model
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