水稻顶部小穗退化性状的QTL分析

王斌1,刘贺梅2,毛毕刚3,高素伟3,徐宏斌1,葛建贵1，*

doi:10.3969/j.issn.10017216.2011.05.016

中国水稻科学 >

2011 , Vol. 25 >Issue 5: 561 - 564

DOI: https://doi.org/10.3969/j.issn.10017216.2011.05.016

研究简报

水稻顶部小穗退化性状的QTL分析

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¹安徽省六安市农业科学研究所, 安徽六安237000； ² 河南省新乡市农业科学院, 河南新乡453003； ³中国农业科学研究院作物科学研究所, 北京100081

收稿日期: 2011-01-11

修回日期: 2011-04-08

网络出版日期: 2011-09-10

基金资助

国家973计划资助项目（2010CB125904）

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QTL Analysis on Apical Spikelet Abortion in Rice

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¹ Institute of Lu′an Agricultural Sciences, Anhui Province, Lu′an 237000, China; ²Xinxiang Academy of Agricultural Sciences, Henan Province, Xinxiang 453003, China; ³Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China;

Received date: 2011-01-11

Revised date: 2011-04-08

Online published: 2011-09-10

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摘要

利用水稻籼粳亚种间组合越光与桂朝2号构建的重组自交系群体，在3种环境下对水稻穗顶部小穗退化性状进行了数量性状基因座(QTL)分析。重组自交系群体中穗顶部小穗退化性状的表型均呈连续分布，表现为数量性状遗传，并出现了超亲分离。在RIL群体中共检测到6个QTL，分别位于水稻第1、2、3、5、6和7染色体上，贡献率为4.49% ~ 9.74%。其中, 在两地都分别检测到的qASA2位于第2染色体上RM3355―RM263区间；位于第1染色体标记区间RM6451―OSR13的qASA1， LOD值达3.27，其增效等位基因来自桂朝2号。

关键词： 水稻; font-family: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">︱顶部小穗退化; font-family: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">︱数量性状基因座

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王斌1,刘贺梅2,毛毕刚3,高素伟3,徐宏斌1,葛建贵1，* . 水稻顶部小穗退化性状的QTL分析[J]. 中国水稻科学, 2011 , 25(5) : 561 -564 . DOI: 10.3969/j.issn.10017216.2011.05.016

Abstract

Quantitative trait loci (QTL) analysis on abortion of apical spikelet was conducted by using recombinant inbred lines (RILs) derived from a cross between indica variety Guichao 2 and Koshihikari under three environments. The abortion trait of apical spikelets in the recombinant inbred lines demonstrated a continuous distribution together with transgressive segregations. Six QTLs were mapped on the chromosomes 1,2,3,5,6 and 7 in RIL populations, explaining 4.49% -9.74% phenotypic variations. Among these QTLs, qASA2 was detected at the interval flanked by the markers RM3355 and RM263 on chromosome 2 under different environments. qASA1 was mapped between the markers RM6451 and OSR13 on chromosome 1 with its positive alleles from Guichao 2.

Key words： rice; font-family: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">︱apical ; spikelet abortion; font-family: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">︱; quantitative trait locus

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