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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (10): 158-163.doi: 10.11924/j.issn.1000-6850.2011-3176

• 林学 园艺 园林 • 上一篇    下一篇

枣4种农艺性状的QTL定位及分析

孙拥军 齐靖 董祯   

  • 收稿日期:2011-10-31 修回日期:2012-01-25 出版日期:2012-04-05 发布日期:2012-04-05
  • 基金资助:

    国家自然科学基金项目“中国枣遗传图谱的构建和与重要性状紧密连锁的AFLP标记的筛选”资助项目

QTLs Analysis of Four Agronomic Characteristics in Chinese Jujube

  • Received:2011-10-31 Revised:2012-01-25 Online:2012-04-05 Published:2012-04-05

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摘要：

为了加快中国枣种质资源改良进程，以定位和分析枣农艺性状QTL为目标，分别调查了中心干直径、二次枝着生角、二次枝弯度和二次枝曲度性状表型值在150株‘冬枣’ב临猗梨枣’F1代群体中的分离情况，并应用已构建的枣遗传连锁图谱，采用区间作图法实现了枣4种农艺性状的QTL分析。共检测到4种性状相关的QTL 34个，包含控制中心干直径10个、控制二次枝着生角度5个、控制二次枝弯度8个和控制二次枝上曲度3个。34个QTL分布在枣遗传连锁图谱的11个连锁群中，各QTL的LOD值在2.50~4.61之间，可分别解释8.6%~54.2%的表型变异。这些枣农艺性状QTL的定位以及相关信息的获得将为今后开展枣相关基因的图位克隆、品种改良及分子标记辅助育种提供十分重要的工具和基础。

关键词: 形态特征, 形态特征

Abstract:

In order to analysis the QTLs for 4 agronomic characteristics in Chinese jujube, The F1 segregation population derived from a cross between Dongzao (Zizyphus jujuba Mill. ‘Dongzao’) and Linyilizao (Zizyphus jujuba Mill. ‘Linyilizao’) was used to survey on characteristics of trunk diameter (TD), branch angle (BA), branch crankle angle (BCA), and branch bent angle (BBA). With the constructed genetic linkage map of Chinese jujube, a total of 34 QTLs were detected by using interval mapping method, including 6 for TD, 14 for BA, 7 for BCA and 7 for BBA, the phenotypic variation explained by each QTL ranged from 8.6% to 54.2% and its LOD value within 2.50-4.61. It will provide useful genetic information that could be used as molecular marker-aided selection in breeding program of Chinese jujube.

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