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| 对玉米人工合成群体遗传性状改良效果的研究 | |
| 引用本文： | 姚占军,杜鸣銮,徐世昌,纪明山,陈景堂.对玉米人工合成群体遗传性状改良效果的研究[J].河北农业大学学报,2002,25(3):13-18. |
| 作者姓名： | 姚占军 杜鸣銮 徐世昌 纪明山 陈景堂 |
| 作者单位： | 1. 河北农业大学农学院,河北保定,071001 2. 沈阳农业大学,辽宁沈阳,110161 3. 中国农科院植保所,北京,100094 |
| 摘 要： | 为对玉米群体改良提供理论依据和实践经验，对其进行限制性选择的株型改良以及确定合理的选择指数是群体改良的一项重要内容，在选择强度，有效群体和环境条件均一致的条件下，对玉米（Zea mayL.)沈综基础群体和（S1）C1群体实施两种方案的轮回选择，得到半同胞家系HC2群体和全同胞家系FC3群体，同时对产量组成性状，植株性状及抗病性进行表型选择，结果表明，在HC2群体中，穗长，穗粗，行粒数，穗行数，百粒重的通径系数总效应分别为：0.579,0.415,0.363,0.311,0.293,在FC3群体中，分别为0.511,0.317,0.578,0.014,0.368。与产量相关农艺性状的变异系数有所下降。群体植株性状获得的遗传增益不尽相同，营养体的生长量有所增加。 |
| 关 键 词： | 玉米 人工合成 群体遗传 性状改良 通径分析 株型 |
| 文章编号： | 1000-1573(2002)03-0013-06 |
| 修稿时间： | 2001年10月29 |
The Study on the improvement effects for genepical characters of arpificical synthetiocal maice populations |
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| YAO Zhan jun ,DU Ming luan ,XU Shi chang ,JI Ming shan ,CHEN Jing tang.The Study on the improvement effects for genepical characters of arpificical synthetiocal maice populations[J].Journal of Agricultural University of Hebei,2002,25(3):13-18. | |
| Authors: | YAO Zhan jun DU Ming luan XU Shi chang JI Ming shan CHEN Jing tang |
| Institution: | YAO Zhan jun 1,DU Ming luan 2,XU Shi chang 3,JI Ming shan 2,CHEN Jing tang 1 |
| Abstract: | Two kinds of recurrent selection were implemented on maize basic population and (S 1)C 1 for the acquirement of half-sib HC 2 population and full-sib FC 3 population,while carrying out phenotypic selection according to yield-composite traits,plant characters and disease resistance The results show that the total efficacy of coefficients path for ear length,ear thickness,per row grain no ,row number,100-kernel weight are 0 579,0 415,0 363,0 311,0 293 respectively in HC 2 and 0 511,0 317,0 578,0 014,0 368 in FC 3 The variability coefficient of agronomic traits related to yield decreased slightly The genetic gain for population plant characters are different and the growth of nutrient body increased,therefor the restriction selection and determination of rational selection index for plant type will play an important role in population improvement |
| Keywords: | maize genetic gain selection index path analysis plant type |
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