Identification and characterization of genomic regions that control the capacity of water uptake in rice

控制水稻吸水能力的基因组区域的鉴定和表征

• 批准号: 19380009
• 负责人: HIRASAWA Tadashi
• 金额: $ 13.15万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19380009/
• 关键词: イネ; 気孔伝導度; 吸水能力; 光合成速度; 染色体断片置換系統; 窒素含量; 水伝導度; 量的形質遺伝子座; 水の通導抵抗; 浸透的吸水; 受動的吸水; 根

A high-yielding indica cultivar, Habataki maintains the higher rate of leaf photosynthesis than in the standard Japanese cultivars, Koshihikari and Sasanishiki as a result of the higher hydraulic conductance as well as the higher level of leaf nitrogen. The significant higher hydraulic conductance resulted from the larger root surface area in Habataki. Using progeny populations and lines derived from a cross between Koshihikari (or Sasanishiki) and Habataki, we identified the genomic regions responsible for the hydraulic conductance within a 165-kb region and within a 789-kb region on the long arm of chromosome 4 and on the short arm of chromosome 8, respectively. The designated region on chromosome 4 of Habataki was responsible for the increase in root mass.

由于较高的导水率和较高的叶片氮素水平，高产品种哈巴塔基保持了比标准日本品种Koshihikari和Sasanishiki更高的叶片光合作用速率。哈巴塔基较大的根表面积导致了显著较高的导水率。利用来自Koshihikari(或Sasanishiki)和Habataki杂交的后代群体和品系，我们分别在4号染色体长臂上的165kb区域和8号染色体短臂上的789kb区域内鉴定了负责水力传导性的基因组区域。哈巴塔基4号染色体上的指定区域是导致根质量增加的原因。

项目成果

QTL analysis of leaf pgotosynthesis of rice using the lines of Habataki chromosome segment substitution in Sasanishiki

笹锦Habataki染色体片段置换系水稻叶片光合QTL分析

• 发表时间: 2008
• 作者: Hirasawa;T.
• 通讯作者: T.

作物学用語事典

作物科学术语词典

• 发表时间: 2009
• 作者: 新田洋司;松田智明・新田洋司・後藤雄佐・平沢正・山本由徳・吉田智彦;編
• 通讯作者: 編

Varietal differences in rates of leaf photosynthesis in rice plants, with special reference to the nitrogen content of leaves

水稻叶片光合作用速率的品种差异，特别是叶片的氮含量

• 发表时间: 2010
• 期刊: Plant Production Science Vol.13,No.1
• 作者: Hirasawa;T.;S. Ozawa;R.D. Taylaran;T. Ookawa
• 通讯作者: T. Ookawa

QTL analysis of leaf photosynthesis of rice using the lines ofHabataki chromosome segment substitution in Sasanishiki

笹锦Habataki染色体片段置换系水稻叶片光合作用QTL分析

• 发表时间: 2008
• 作者: Hirasawa;T.;Tadashi Hirasawa
• 通讯作者: Tadashi Hirasawa

QTL analysis of the capacity of water uptake and transport in rice: resistance to water transport in the lines of (cv. ) Habataki chromosome segment substitution into (cv. )

水稻吸水和运输能力的 QTL 分析： (cv. ) Habataki 染色体片段替换为 (cv. ) 品系的水运输抗性

• 发表时间: 2007
• 作者: 浅沼俊輔;ら;Asanuma S.
• 通讯作者: Asanuma S.