云南软米直链淀粉含量的遗传分析与基因定位 |
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引用本文: | 赵国珍,邹茜,陈于敏,苏振喜,朱振华,袁平荣. 云南软米直链淀粉含量的遗传分析与基因定位[J]. 植物遗传资源学报, 2013, 14(5): 974-977 |
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作者姓名: | 赵国珍 邹茜 陈于敏 苏振喜 朱振华 袁平荣 |
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作者单位: | 云南省农业科学院粮食作物研究所 |
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基金项目: | 云南省科技攻关项目(2012BB013);云南省技术创新人才培养项目(2008PY089);云南省基金项目(2009ZC141M)资助 |
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摘 要: | 以低直链淀粉( 软米)品种毫木细与高直链淀粉品种桂朝2号杂交F2代分离群体为试验材料,研究水稻低直链淀粉含量的遗传规律和基因定位。结果表明,软米品种毫木细直链淀粉含量受一个隐性主效基因/QTL控制,该基因位点(QTL)与糯性基因(wx)为非等位。除主效QTL外,可能还有微效基因的作用。用SSR标记检测到该主效基因/QTL位于11号染色体上RM224附近,LOD值为15.4,可解释的表型变异率为32%。
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关 键 词: | 软米;直链淀粉含量;遗传分析;基因定位 |
收稿时间: | 2013-01-28 |
修稿时间: | 2013-03-08 |
Genetic Analysis and Mapping QTLs for Amylose Content of Soft Rice Variety from Yunnan |
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Abstract: | Genetic analysis and mapping QTLs of amylose content were conducted using a F2 segregation population of Haomuxi/Guichao 2.The results showed that the amylose content of Haomuxi was controlled by a recessive major QTL, and it was not allelic to the wx locus. Besides the major QTL there were several minor QTLs. The major QTL was detected on chromosome 11 with LOD scores 15.4 with SSR markers, which is linked to RM224. This major QTL can explain 32% of phenotypic variation. |
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