应用导入系群体进行水稻产量相关性状的遗传剖析

被引：10

作者：

康乐 ^{[1
]}

李宏 ^{[2
]}

孙勇 ^{[1
]}

卢德城 ^{[2
]}

张帆 ^{[1
]}

黄道强 ^{[2
]}

徐建龙 ^{[1
]}

王志东 ^{[2
]}

朱苓华 ^{[1
]}

高用明 ^{[1
]}

傅彬英 ^{[1
]}

李康活 ^{[2
]}

周永力 ^{[1
]}

周少川 ^{[2
]}

黎志康 ^{[1
]}

机构：

[1] 中国农业科学院作物科学研究所/国家农作物基因资源与基因改良重大科学工程

[2] 广东省农业科学院水稻研究所

来源：

作物学报 | 2008年 / 09期

关键词：

水稻; 选择导入系; QTL; 产量; 单株穗数; 每穗实粒数; 千粒重; 遗传重叠; 一因多效;

D O I：

暂无

中图分类号：

S511 [稻];

学科分类号：

0901 ;

摘要：

以优质高产水稻品种丰矮占为轮回亲本,以Khazar和IR64作供体亲本,经连续回交分别构建了2套导入系(introgression lines)群体。对导入系后代分别在广州早造和晚造两种环境下进行重复产量鉴定。对两环境下产量及其组分性状的相关分析表明,在广州早造和晚造环境下水稻产量构成因素存在很大差异。在早造,每穗实粒数对产量供献最大,而在晚造,单株有效穗数对产量供献最大。应用SSR分子标记对这些导入系的供体片段进行全基因组扫描并应用单向方差分析(one-way ANOVA)剖析了导入系基因型与其产量及其组分的关系,共检测到27个染色体区段与产量及组分性状相关,包括10个产量QTL、9个单株穗数QTL、9个每穗实粒数QTL和14个千粒重QTL。大多数QTL只在一个环境条件下表达。在第3、7和9染色体上有3个QTL区域与产量及其两个组分有较大的效应,值得关注。最终,本研究在同步进行复杂农艺性状的改良和遗传剖析的研究上做出了有益的尝试。

引用

页码：1500 / 1509

页数：10

共 16 条

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