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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (18): 31-35.doi: 10.11924/j.issn.1000-6850.2011-3290

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

不同环境下水稻灌浆期净光合速率的动态遗传研究

贾小丽 苗利国 林红梅 林文雄   

  • 收稿日期:2011-11-08 修回日期:2011-12-31 出版日期:2012-06-25 发布日期:2012-06-25
  • 基金资助:

    强优势杂交稻及其亲本基因差异表达的规律与机制研究;不同供氮条件下水稻强弱势粒灌浆的分子机理研究;水稻强弱势粒灌浆差异的分子生态学研究

Dynamic Genetic Research of Net Photosynthetic Rate for Rice Grain-filling under Different Environmental Conditions

  • Received:2011-11-08 Revised:2011-12-31 Online:2012-06-25 Published:2012-06-25

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摘要：

利用小穗小粒型水稻Milyang 46和大穗大粒型FJCD建立的一个包含130个家系F10的重组自交群体及其分子标记连锁图，测定福建省武夷山和莆田环境下灌浆期五个阶段的净光合速率，并进行了QTL动态定位及环境互作研究。QTL定位分析共检测到22个加性QTL，位于1、2、4、7、9、10、11号染色体上，对表型变异贡献率0.34%~22.71%。环境互作分析，共检测到灌浆期第一、二、四阶段的7个GE互作位点，分布在水稻2、4、9、11号染色体上。其中，灌浆期第一阶段的qNPR-2-10，第四阶段的qNPR-2-2、qNPR-4-1等3个QTL与环境的互作对表型变异贡献率达到10%以上，表明净光合速率受到较大的环境影响。此研究从一定程度上揭示了净光合速率的遗传机制，为水稻高光效育种提供了依据。

关键词: 预警信息, 预警信息

Abstract:

Quantitative trait loci (QTL) dynamic mapping and gene × environment interaction were used to research net photosynthetic rate for five stages of grain filling from a RIL including 130 lines deriving from Milyang 46 and FJCD. This research carried in Wuyishan City and Putian City, Fujian Province. 22 additive QTL were detected in two environments, located in chromosome 1, 2, 4, 7, 9, 10, 11, and the contribution rate for phenotype variance were from 0.34% to 22.71%. We got 7 QTL with significant additive × environment interaction effects, located in chromosome 2, 4, 9, 11; of that, the contribution rates for phenotype variance of qNPR-2-10, qNPR-2-2 and qNPR-4-1 exceed 10%. This study aimed to reveal dynamic expressions of QTL controlling net photosynthetic rate in rice under different environmental conditions, and benefited to rice breeding for high photosynthetic efficiency.

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