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利用染色体单片段代换系定位水稻垩白QTL

DOI: 10.7668/hbnxb.2015.01.001, PP. 1-8

Keywords: 水稻,垩白度,垩白粒率,数量性状位点,染色体单片段代换系,代换作图

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Abstract:

为了鉴定和定位水稻垩白相关QTL,分析其遗传效应,利用籼稻品种广陆矮4号为受体,粳稻品种日本晴为供体构建的84个染色体单片段代换系群体为试验材料,通过单因素方差分析和Dunnett's多重比较,对代换片段上垩白相关QTL进行鉴定。以P≤0.001为阈值,共检测到36个垩白相关QTL。其中,垩白度QTL共19个,其加性效应值为-6.44~12.86,加性效应百分率为-34.04%~68.02%。垩白粒率相关QTL共17个,其加性效应值为-7.32~3.63,加性效应百分率为-8.07%~4.00%。这些QTL的鉴定为进一步精细定位并克隆相应QTL,提高稻米外观品质奠定了基础。

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