| 玉米品系内改良S1选择方法与技术 |
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| 引用本文： | 何川, 郑祖平.玉米品系内改良S1选择方法与技术[J].玉米科学,2003,11(4):019-020. |
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| 作者姓名： | 何川 郑祖平 |
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| 作者单位： | 四川省南充市农业科学研究所,四川,南充,637000 |
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| 基金项目： | 农业部"948"引进项目"优良玉米自交系和种质资源的引进、改良与利用"课题的部分研究内容,项目编号:农业部971005 |
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| 摘 要： | 根据玉米群体轮回选择的基本原理和方法,建立起一套简单易行的群体改良S1选择方法,其主体技术包括组建一个好的基础群体,利用控制授粉提高优良基因的频率,借助互交使基因重组.采用此方法对CIMMYT提供的热带玉米群体进行了3轮选择,群体产量平均每轮增益为6.4%,群体测交种产量平均每轮增益为6.3%.表明群体产量的一般配合力有较大的提高。
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| 关 键 词： | 玉米群体 轮回选择 S1选择 增益 |
| 收稿时间： | 2002/11/11 0:00:00 |
Technology of Population Improvement by S1-selection in Maize Families |
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| HE Chuan; ZHENG Zu-ping.Technology of Population Improvement by S1-selection in Maize Families[J].Journal of Maize Sciences,2003,11(4):019-020. |
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| Authors: | HE Chuan; ZHENG Zu-ping |
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| Abstract: | According to the characteristics of the maize and the principle with recurrent selection,A simple and practical method of population improvement has been developed.The principle techniques include composing basic population,increasing the frequency gene via controlled pollination,producing recombination by inter-crossing.The average gain of the population from CIMMYT was 6.4% for 3 cycle of recurrent S1-selection and the average gain of test-crosses was 6.3%,the GCA(general combining ability) of population has been increased. |
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| Keywords: | Maize Population Recurrent selection Improvement S1 Selection Average gain of heredity |
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