| 不同类型杂交早稻农艺性状的遗传分析 |
| |
| 引用本文： | 毛友纯,徐庆国,胡志明.不同类型杂交早稻农艺性状的遗传分析[J].中国农学通报,2005,21(8):132-132. |
| |
| 作者姓名： | 毛友纯 徐庆国 胡志明 |
| |
| 作者单位： | 1. 湖南农业大学研究生处,湖南,长沙,410128
2. 湖南农业大学农学院,湖南,长沙,410128 |
| |
| 基金项目： | 科技部国家早稻品种改良工程资助项目与（00NKY1004）：湖南省教育厅重点资助项目（02A018）. |
| |
| 摘 要： | 采用6个杂交稻三系不育系和10个杂交早稻父本品种，通过不完全双列杂交配置了60个杂交早稻组合。分析了在相同栽培环境条件下三系杂交早稻亲本及其所配置的杂交早稻组合的12个农艺性状的遗传规律。结果表明：12个农艺性状的遗传以加性效应为主，各性状的狭义遗传力大小顺序依次为千粒重>株高>穗长>穗实粒数>结实率>穗总粒数>生育期>理论产量>实际产量>有效穗>成穗率>最高苗；除穗长外，其余性状受父本的影响较大；理论产量与结实率、穗实粒数、株高、成穗率及有效穗呈正相关，可通过这几个性状对产量进行间接选择；穗实粒数是杂交早稻选择指数中最重要的选择性状。
|
| 关 键 词： | 杂交早稻 农艺性状 遗传力 遗传分析 |
| 收稿时间： | 2005-01-26 |
| 修稿时间： | 2005-01-262005-03-18 |
Genetic Analysis of Agronomic Characters in Early Hybrid Rice |
| |
| Mao Youchun,Xu Qingguo,Hu Zhiming.Genetic Analysis of Agronomic Characters in Early Hybrid Rice[J].Chinese Agricultural Science Bulletin,2005,21(8):132-132. |
| |
| Authors: | Mao Youchun Xu Qingguo Hu Zhiming |
| |
| Institution: | (1Graduate school of Hunan Agricultural University, Changsha 410128；
2Agronomy college of Hunan Agricultural University, Changsha 410128) |
| |
| Abstract: | Six rice cytoplasmic male sterile lines were crossed with 10 early-seasoned rice restorer lines by incomplete diallel cross(NCⅡ)design to make 60 combinations of early-seasoned hybrid rice. Twelve agronomic characters of these parents and their hybrid combinations were observed for genetic analysis. The results obtained showed that the additive effect was predominant for all the characters. The paternal effect was greater than maternal one for all the characters except spikelet length. The narrow heritability of each character was arranged in descending order as 1000-grain weight, plant height, spikelet length, plump seeds per spikelet, seed set, total seeds per spikelet, whole growth period, expected grain yield, observed grain yield, effective spikelet number, effective spikelet percentage and maximum tiller number. The expected grain yield was positively correlated with seed set, plump seeds per spikelet, plant height, effective spikelet percentage and effective spikelet number, which could be used for indirect selection for yield. The character plump seeds per spikelet was the most important among components of yield selection index in early-seasoned hybrid rice. |
| |
| Keywords: | Early hybrid rice Agronomic characters Heritability Genetic analysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《中国农学通报》浏览原始摘要信息 |
| 点击此处可从《中国农学通报》下载免费的PDF全文 |
|
