Identification of AFLP markers favorable to heterosis in hybrid rice

文献类型： 外文期刊

第一作者： Liu, XC

作者： Liu, XC;Ishiki, K;Wang, WX

作者机构：

关键词： Aflp markers;Heterosis;Rice;Length-polymorphisms;Molecular markers;Genetic-basis;Heterozygosity;Performance;Diversity;Parents;Alleles;Inbreds

期刊名称：BREEDING SCIENCE （ 影响因子：2.086； 五年影响因子：2.632 ）

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年卷期：

页码：

收录情况： SCI

摘要： In hybrid rice breeding programs, it is the most important to select donors for improving parental lines and to predict the hybrid performance. In this study, AFLP marker technology and a half-diallel method were used to address these related issues in hybrid rice. Based on the representative heterosis characters representing in the F-1 generation, an innovative method was designed to identify the genetic diversity related to heterosis for yielding with the detected AFLP. The results showed that the genetic diversity among the parental lines was certainly related to F-1 heterosis, and a few loci contributed to hybrid vigor. We discovered 11 favorable alleles with different genetic effects significantly contributing to the heterosis in grain yield among 85 AFLP markers, and 8 unfavorable alleles that significantly reduced heterosis. Based on the favorable and unfavorable alleles found, 42 accessions were evaluated for the exploitation potentials of heterosis, as reference for hybrid rice breeding. Moreover, some aspects related to heterosis formation are discussed in this paper.

分类号： S3

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