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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (12): 73-76.

所属专题： 玉米

• 农学 农业基础科学 • 上一篇    下一篇

甜玉米穗位高的QTL定位

蒋锋 刘鹏飞 张姿丽 王晓明   

  • 收稿日期:2010-12-27 修回日期:2011-02-14 出版日期:2011-05-25 发布日期:2011-05-25
  • 基金资助:

    鲜食型玉米抗病核心种质的创建与新品种选育

QTL Mapping for Ear Height in Sweet Corn

  • Received:2010-12-27 Revised:2011-02-14 Online:2011-05-25 Published:2011-05-25

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摘要：

选用穗位高有显著差异的甜玉米自交系T14和T4为亲本配制杂交组合，以330个F2单株为作图群体，用复合区间作图法在玉米全基因组上检测穗位高QTL。结果显示，在F2:3群体中检测到7个与甜玉米穗位高相关的QTL，分别位于玉米第3、4、8、9、10染色体上，可解释3.2%~13.3%的表型变异。这一结果有望为加快高产、耐密和抗倒伏育种进程，实现分子标记辅助选择提供理论依据。

关键词: 微生物气溶胶, 微生物气溶胶

Abstract:

In this study, cross combination was designed by selecting two sweet corn inbred (T14 and T4) different significantly in ear height. Using 330 F2 individuals as genetic mapping population, we carried out QTL screening in whole corn genome with the methods of multiple interval mapping (CIM). The result indicated that 7 QTL in chromosome 3, 4, 8, 9, 10 were screened correlating with ear height trait in F2:3 families, accounting for 3.2%-13.3% of phenotypic variance. The QTL of ear height from this study may improve the procedure of high yield, density and lodging resistance breeding and molecular marker-assisted selection (MAS).

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