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水分梯度下水稻CT,LWP和SF的相关及其QTL定位研究 被引量：19

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摘要 在抗旱鉴定大棚内同时实现水、旱2种处理,测定了水稻珍汕97B和旱稻IRAT109杂交F9代重组自交系群体(195个株系)的冠层温度(canopytemperature,CT)、叶水势(leafwaterpotential,LWP)和结实率(spikeletfertility,SF).相关分析结果表明,干旱条件下,冠层温度与结实率呈极显著负相关(?0.2867);叶水势与结实率呈显著正相关(0.1696);冠层温度与叶水势呈极显著负相关(?0.2740),说明在干旱条件下保持较低冠层温度及较高叶水势的材料抗旱性较强.利用QTLMapper共检测到44个主效QTL和45对显著的互作位点与冠层温度、叶水势和结实率的表达有关.在水、旱条件下,主效QTL对CT,LWP和SF的联合贡献率分别为87.85%,15.06%,79.46%和72.61%,87.68%,33.29%;互作位点对CT,LWP和SF的联合贡献率分别为55.69%,47.16%,48.15%和53.44%,57.94%,54.62%.与已有的抗旱QTL定位结果比较,发现有19个主效QTL与已定位的抗旱QTL位于相同的或紧密相连的染色体区段.
作者 刘鸿艳 邹桂花 刘国兰 胡颂平 李明寿 余新桥 梅捍卫 罗利军
机构地区 上海交通大学生命科学院 上海市农业生物基因中心
出处 《科学通报》 EI CAS CSCD 北大核心 2005年第2期130-139,共10页 Chinese Science Bulletin
基金 国家高技术研究发展计划(批准号2003AA207010) 国家重点基础研究发展规划(批准号2004CB117204)资助项目.
关键词 叶水势 冠层温度 结实率 QTL定位 抗旱 水稻 干旱条件 SF CT 联合
分类号 S511 [农业科学—作物学]
  • 相关文献

参考文献25

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二级参考文献24

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