基于SNP芯片的玉米黄改系遗传基础研究

Research on Genetic Basis of Maize Huanggaixi Lines Based on SNP Chips

本研究采用SNP3K芯片对亲本黄早四和14份黄改系材料进行遗传基础分析。结果表明：14个黄改系与黄早四的相似度比例在90.1%~98.0%之间。黄改系已达到纯合状态,可以认定黄改系是黄早四的近等基因系。14个黄改系在10条染色体上的相似度在88.3%~97.9%之间。黄改系在形成的过程中主要在染色体两端进行杂合,属于易变、敏感区域。

The genetic basis of inbred line Huangzaosi and 14 Huanggaixi lines were analyzed by SNP Chips. Results showed that the similarity among inbred line Huangzaosi and 14 Huanggaixi lines was 90.1%-98.0%. The Huanggaixi lines had reached homozygous condition. Huanggaixi lines can be considered near-isogenic lines of inbred Huangzaosi. The similarity of 14 Huanggaixi lines in ten chromosomes was 88.3%-97.9%. In the process of breeding Huanggaixi lines, hybridity occurred on the ends of chromosomes where it was mutable and sensitive areas.