Heterofertilization of the opaque-2 endosperm in maize

文献类型： 外文期刊

第一作者： Yang, Wenpeng

作者： Yang, Wenpeng;Yang, Wenpeng;Zheng, Yonglian;Wu, Jing;Yang, Wenpeng;Zheng, Yonglian;Wu, Jing;Yang, Wenpeng

作者机构：

期刊名称：HEREDITAS （ 影响因子：3.271； 五年影响因子：2.807 ）

ISSN： 0018-0661

年卷期： 2008 年 145 卷 5 期

页码：

收录情况： SCI

摘要： Selection on endosperm traits among individual kernels is very important in maize because the characteristics of the kernel, especially the endosperm, are directly related to quality and yield. However the accuracy of the selection according to endosperm phenotype may be affected by heterofertilization. The objective of this work was to investigate the frequency of heterofertilization of opaque-2 (o2) kernels in maize. Three BC(1)F(1) populations using o2 lines as recurrent parents and some BC(1)F(2) progenies were used to investigate endosperm phenotypes and plant genotypes. The plant genotypes were determined using simple sequence repeat (SSR) markers, phi057 or phi112, which are sequences located within the Opaque-2 (O2) gene; the endosperm phenotypes were observed visually. In the BC(1)F(1) populations, the frequency of heterofertilization was 0 similar to 4.545%. This result indicates that there may be up to a 5% difference between the selections based on endosperm phenotype and plant genotype in a backcross breeding program. Molecular marker assisted selection should be a more accurate selection procedure. In addition, we discuss the relationship between the endosperm heterofertilization of o2 maize and the variations within the O2 locus.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序