Studies on the origin of high-photosynthesis in rice high-yielding cultivar, Takanari, based on its pedigree analysis

基于系谱分析的水稻高产品种高成高光合作用起源研究

• 批准号: 22780017
• 负责人: TAKAI Toshiyuki
• 金额: $ 2.25万
• 依托单位: National Agriculture and Food Research Organization
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22780017/
• 关键词: イネ; 多収; 光合成; 遺伝解析; 多収性

To understand genetic mechanism of leaf photosynthesis, one of the factors related to rice yield, we investigated leaf photosynthesis in high-photosynthesis and high-yielding cultivar, Takanari, and its ancestors with eco-physiological and genetic methods. Comparative mapping of quantitative trait locus (QTL) for photosynthesis-related traits revealed that Takanari and its ancestors such as IR8 and Tongil commonly had a QTL on long arm of chromosome 4 with the allele increasing leaf N content. Further genotypic analysis of the Takanari pedigree suggested that breeders have selected the favorable allele of the QTL for photosynthesis on chromosome 4 in several breeding programs for high yield.

为了解水稻产量相关因子之一的叶片光合作用的遗传机制，采用生态生理和遗传方法对高光合高产品种高稻及其祖先的叶片光合作用进行了研究。光合相关性状的QTL比较定位结果表明，高栗及其祖先IR8和统吉尔在4号染色体长臂上共有一个增加叶片氮含量的QTL。进一步对Takanari家系的基因型分析表明，育种者在不同的育种方案中选择了4号染色体上光合作用QTL的有利等位基因以获得高产。

项目成果

イネの多収品種間における光合成関連形質の比較遺伝解析

高产水稻品种光合作用相关性状的比较遗传分析

• 发表时间: 2012
• 作者: 高井俊之;荒井裕見子;岩澤紀生;吉永悟志;近藤始彦
• 通讯作者: 近藤始彦

Comparative Mapping Suggests Repeated Selection of the Same Quantitative Trait Locus for High Leaf Photosynthesis Rate in Rice High-Yield Breeding Programs

• DOI: 10.2135/cropsci2012.03.0179
• 发表时间: 2012-11-01
• 期刊: CROP SCIENCE
• 影响因子: 2.3
• 作者: Takai, Toshiyuki;Arai-Sanoh, Yumiko;Kondo, Motohiko
• 通讯作者: Kondo, Motohiko