| 高丹草株高与叶片数主基因+多基因的遗传分析 |
| |
| 引用本文： | 逯晓萍,云锦凤,陈强,米福贵,张雅慧,薛春雷.高丹草株高与叶片数主基因+多基因的遗传分析[J].草地学报,2009,17(6):713-717. |
| |
| 作者姓名： | 逯晓萍 云锦凤 陈强 米福贵 张雅慧 薛春雷 |
| |
| 作者单位： | 1. 内蒙古农业大学农学院, 呼和浩特, 010018;2. 内蒙古鄂尔多斯市农业科学研究所, 鄂尔多斯, 017000 |
| |
| 摘 要： | 于200年采用主基因+多基因混合遗传模型,对高丹草(Sorghum×Sudan grass)2002 GZ-1和2002 GB-1杂交组合的个世代(P1,P2,F1,F2,F2:3)群体的株高和叶片数进行联合分析.结果表明:株高遗传受2对加性-显性主基因+加性-显性多基因(E-2)控制;叶片数遗传受2对加性-显性-上位性主基因+加性-显性多基因(E-1)控制,两性状的遗传符合2对主基因+多基因混合遗传模型,主基因对株高、叶片数的表现起主要作用.株高中主基因加性和显性效应分别为26.98、10.02和2.36、1.61,而多基因分别为-6.9和-.06,F2和F2:3的主基因遗传率分别为77.94%和82.9%.叶片数主基因的加性和显性效应分别为6.11、1.04和0.63、-0.09,多基因分别为-0.16、-0.11,F2和F(2:3)的主基因遗传率分别为89.30%和91.60%.表明2个性状是以主基因遗传为主,应在早期世代进行选择.该性状所属遗传模型的研究,旨在为高丹草的遗传改良和杂种优势利用提供理论依据.
|
| 关 键 词： | 高丹草 株高 叶片数 遗传 主基因+多基因混合遗传 |
| 收稿时间： | 2009-04-21 |
Genetic Analysis of Plant Height and Leaf Number Related Main Gene and Polygene of Sorghum× Sudan Grass |
| |
| LU Xiao-ping,YUN Jin-feng,CHEN Qiang,MI Fu-gui,ZHANG Ya-hui,XUE Chun-lei.Genetic Analysis of Plant Height and Leaf Number Related Main Gene and Polygene of Sorghum× Sudan Grass[J].Acta Agrestia Sinica,2009,17(6):713-717. |
| |
| Authors: | LU Xiao-ping YUN Jin-feng CHEN Qiang MI Fu-gui ZHANG Ya-hui XUE Chun-lei |
| |
| Institution: | 1. College of Agronomy, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia Autonomous Region 010018, China;2. College of Ecology and Environment, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia Autonomous Region 010018, China;2. Agriculture Academy of Erdos city in Inner Mongolia, Erdos, Inner Mongolia Autonomous Region 017000, China |
| |
| Abstract: | The main gene + polygene mixed model was used in genetic analysis of height and leaf number of 5 plant materials (P1, P2, F_1, F_2, F2∶3) of Sorghum×Sudan grasses(2002GZ-1 and 2002GB-1) in 2005. The results showed the plant height character related to 2 pairs of additive-dominant main gene+additive-dominant polygene (E-2). The leaf number character related to 2 pairs of additive-dominant-epistatic main gene+additive-dominant polygene (E-1). The 2 characters genetics subjected to the main gene + polygene mixed model, and the main genes decided the height and the leaf number expression. The contribution of 2 main genes in height effect on addition and domination were 26.98, 10.02 and 2.36, 1.61 correspondingly, while that of polygene were -6.95 and -5.06. The heritability of main gene in F_2 and F_(2∶3) were 77.94% and 82.95%.The contribution of 2 main genes in leaf number effect on addition and domination were 6.11, 1.04 and 0.63, -0.09 correspondingly, while that of polygene were -0.16,-0.11. The heritability of main gene in F_2 and F_(2∶3) were 89.30% and 91.60%. It showed that the 2 characters were mainly controlled by main gene. The related selection should be carried in early progenies. The result of the agronomic character genetic model provided the guide for Sorghum×Sudan grass improvement and heterosis prediction. |
| |
| Keywords: | Plant height Leaf number Heredity Main gene+polygene mixed genetics |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《草地学报》浏览原始摘要信息 |
| 点击此处可从《草地学报》下载免费的PDF全文 |
|
