| 小麦收获指数遗传及其与农艺性状的相关分析 |
| |
| 引用本文： | 姚金保,姚国才,杨学明,马鸿翔,张平平.小麦收获指数遗传及其与农艺性状的相关分析[J].江苏农业学报,2008,24(1):5-10. |
| |
| 作者姓名： | 姚金保 姚国才 杨学明 马鸿翔 张平平 |
| |
| 作者单位： | 江苏省农业科学院农业生物技术研究所,江苏,南京,210014 |
| |
| 基金项目： | 江苏省高技术研究计划(BG2006305)，国家科技支撑计划(2006BAD01A02-19) |
| |
| 摘 要： | 利用8个不同收获指数小麦品种双列杂交的F1及其亲本,探讨小麦收获指数的遗传及其与主要农艺性状的相关。结果表明:宁麦9号收获指数的一般配合力最好,能极显著地提高杂种后代的收获指数;小麦收获指数的遗传符合加性-显性模型,受加性和显性效应的作用,显性程度为完全显性到超显性;控制收获指数遗传的增效等位基因为显性,增减效等位基因频率在亲本中的分配无明显差异;扬麦9号和郑9023具有最多控制收获指数遗传的显性基因,收获指数可能受1对主效基因的控制,狭义遗传力较高。相关分析表明,收获指数与株高、主穗长、每穗粒数、千粒重、生物量呈极显著正相关。
|
| 关 键 词： | 小麦 收获指数 遗传 农艺性状 |
| 文章编号： | 1000-4440（2008）01-0005-06 |
| 收稿时间： | 2007-03-12 |
| 修稿时间： | 2007年3月12日 |
Inheritance of Wheat Harvest Index and Its Correlations with Agronomic Traits |
| |
| YAO Jin-bao,YAO Guo-cai,YANG Xue-ming,MA Hong-xiang,ZHANG Ping-ping.Inheritance of Wheat Harvest Index and Its Correlations with Agronomic Traits[J].Jiangsu Journal of Agricultural Sciences,2008,24(1):5-10. |
| |
| Authors: | YAO Jin-bao YAO Guo-cai YANG Xue-ming MA Hong-xiang ZHANG Ping-ping |
| |
| Abstract: | Based on F1 diallel crosses involving eight genetically diverse wheat cultivars,inheritance of harvest index(HI) and its correlations with agronomic traits were analyzed.Ningmai 9 had the best general comibining ability and improved significantly the HI in its crossing progeny.The inheritance of HI fit in with the additive dominance model,controlled by both additive and dominant genetic effects.The degree of dominance was from complete dominance to superdominance.The increasing alleles were dominant for HI.In the frequency distribution of increasing or reducing alleles among 8 parents,there was no significant difference.Yangmai 9 and Zheng 9023 had the most dominant genes controlling HI.The HI could be controlled by one pair of major dominant genes with higher narrow sense heritability.The correlation analysis showed that the HI was significantly and positively associated with plant height,length of main spike,number of kernel per spike,1 000-grain weight,and biomass per plant. |
| |
| Keywords: | wheat harvest index inheritance agronomic trait |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
