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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (17): 89-92.

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

粳型杂种稻米籽粒外观品质性状分离的初步研究

赵鑫闻 郭玉华   

  • 收稿日期:2009-06-01 修回日期:2009-04-19 出版日期:2009-09-05 发布日期:2009-09-05

The separation of japonica hybrid rice grains in appearance qualities

Zhao Xinwen,Guo Yuhua   

  • Received:2009-06-01 Revised:2009-04-19 Online:2009-09-05 Published:2009-09-05

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摘要：

摘要：以辽宁省近年审定的杂交粳稻组合T优418及其亲本和对照辽粳9为试验材料，对杂种稻米籽粒间外观品质性状的分离程度及遗传控制进行研究。研究结果表明，杂种稻米籽粒在外观品质性状上普遍发生分离，其中垩白面积的分离最严重，变异系数达224.25%，变幅也都表现为超越双亲，其次为粒重、长宽比、粒长和粒宽，变异系数分别为12.16%，7.79%，5.18%，5.03%。虽然杂交种在垩白性状上分离最严重，但双亲却均表现为垩白较少，说明垩白性状是由多基因控制，受父母本遗传背景影响的。因此在杂交稻米品质改良过程中，考虑双亲的品质差异，不能仅从表型出发，更要注重对亲本基因型的选择。

关键词: 大肠杆菌, 大肠杆菌, 内毒素, 多克隆抗体

Abstract:

Abstract: the separation of japonica hybrid rice grains were studied on appearance qualities with the parent lines, Tyou418, and the control inbred variety liaojing9 as the materials. The result showed that the appearance qualities of F2 generation grains totally separated, of which the chalkiness separated the most (CV=224.25%), with the range went beyond their parents, the grain weight, length/width, length and the width went behind. Although its parents had few chalky grains, the chalkiness of the hybrid separated strongly, indicating that the chalkiness is controlled by polygene. It is concluded that not only the appearance but also the genotypes of the parents must be considered in the improvement of the hybrid rice qualities.