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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (19): 82-86.

所属专题： 小麦

• 农学 农业基础科学 • 上一篇    下一篇

小麦F2:3家系抗旱相关性状的遗传变异分析

张瑞霞 王静华 刘桂茹   

  • 收稿日期:2009-05-06 修回日期:2009-05-20 出版日期:2009-10-05 发布日期:2009-10-05
  • 基金资助:

    国家十一五科技支撑计划项目

Genetic variation Analyse of drought-resistance traits with F2:3 family of wheat

  • Received:2009-05-06 Revised:2009-05-20 Online:2009-10-05 Published:2009-10-05

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摘要：

摘要：在水地和旱地两种环境条件下种植以敏感型品种偃展2号和抗旱型品种石4185为亲本构建的402个F2:3家系群体，应用该群体在水地和旱地两种环境条件下研究了株高、穗长、穗茎节长、旗叶长、旗叶宽、穗数、小穗数、穗粒数、穗粒重9个数量性状的遗传特点。结果表明：两种环境条件下，F2:3家系各性状分离明显, 且基本符合正态分布, 表现为数量性状遗传特点, 是一个较为理想的QTL作图群体。

关键词: 农牧交错带, 农牧交错带, 气候变异, 小麦产量, 莜麦产量, 武川县

Abstract:

Abstract: Four hundred and two F2:3 families, developed from the cross between drought -sensitive variety Yan Zhan 2 and drought-resistance wheat variety Shi 4185, were evaluated for its starch content in the replicated experiments under irrigated and dry land two environments. Based on the analysis of the F2:3 family, the genetic behaviors of 9 quantitative traits including plant height, spike length, in-ternodal length below spike , flag leaf width and area ,fertilized spikelet per spike,numbers of spike per plant, number of spike grains and weight of spike grains . The results revealed that there were obvious segregations for all traits among F2:3 family, under the condition of irrigated and dry land. All traits showed normal distributions.This reflected that this F2:3 family was suitable for QTL mapping for all plant traits. However, there were variations in F2:3 family for almost all traits.