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| 豫综5号玉米群体产量性状轮回选择改良效果分析 | |
| 引用本文： | 杨爽,库丽霞,孟庆雷,侯本军,李家富,张君,陈彦惠.豫综5号玉米群体产量性状轮回选择改良效果分析[J].河南农业大学学报,2010,44(1). |
| 作者姓名： | 杨爽 库丽霞 孟庆雷 侯本军 李家富 张君 陈彦惠 |
| 作者单位： | 1. 河南农业大学农学院,河南郑州,450002 2. 海南省农业科学院粮作所,海南海口,571100 3. 济源市农科所,河南济源,454652 |
| 基金项目： | 河南省重大科技专项超高产玉米新品种选育项目 |
| 摘 要： | 以半姊妹和相互半姊妹轮回选择改良的豫综5号5个轮次群体为材料,通过2点产量比较试验,对豫综5号群体产量及穗部性状的改良效果进行了比较研究.结果表明,随着改良轮次的增加,豫综5号群体的单株产量逐轮提高,平均每轮提高6.36%,其中,半姊妹轮回选择改良的3轮群体平均每轮提高6.30%,相互半姊妹轮回选择的改良群体提高5.51%,群体产量的变异系数从15.4%下降到12.8%,基本符合选择预期效果,群体内仍有较丰富的变异,说明2种选择方法对群体单株产量的改良是有效的.对改良群体穗部性状的比较发现,穗长和行粒数分别提高5.27%和9.96%.说明穗长和行粒数的改良效果明显,它们的提高是群体单株产量提高的主要因素.本研究还对相互轮回选择的方法和豫综5号群体改良利用等问题进行了探讨. |
| 关 键 词： | 玉米 群体改良 轮回选择 产量 |
Improvement effect on the grain yield in maize population Yu Syn5 by recurrent selection |
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| YANG Shuang,KU Li-xia,MENG Qing-lei,HOU Ben-jun,LI Jia-fu,ZHANG Jun,CHEN Yan-hui.Improvement effect on the grain yield in maize population Yu Syn5 by recurrent selection[J].Journal of Henan Agricultural University,2010,44(1). | |
| Authors: | YANG Shuang KU Li-xia MENG Qing-lei HOU Ben-jun LI Jia-fu ZHANG Jun CHEN Yan-hui |
| Institution: | 1.College of Agronornly/a>;Henan Agricultural University/a>;Zhengzhou 450002/a>;China/a>;2.Institute of Grain Crops/a>;Hainan Academy of Agricultural Science/a>;Haikou 571100/a>;3.Jiyuan Academy of Agricultural Science/a>;Jiyuan 454652/a>;China |
| Abstract: | Maize(Zea mays L.) populations Yu Syn5 selected via half-sib recurrent selection(HS-RS) and half-sib reciprocal recurrent selection(HS-RRS) were assessed for changes in grain yield per plant and ear traits by field trials in two locations.The results showed that as the recurrent selection program proceeded from C0 to C4,there were gradual increasing tendency in grain yield per plant of populations and average increase by 6.36% per cycle,in which the average increase for HS-RS and HS-RRS improved populations... |
| Keywords: | maize population improvement recurrent selection grain yield |
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