Genetic diversity of maize populations developed by two kinds of recurrent selection methods investigated with SSR markers.

Li LuJiang; Yang KeCheng; Pan GuangTangRong TingZhao

首页> 外文期刊>Agricultural sciences in China >Genetic diversity of maize populations developed by two kinds of recurrent selection methods investigated with SSR markers.

【24h】

Genetic diversity of maize populations developed by two kinds of recurrent selection methods investigated with SSR markers.

机译：Genetic diversity of maize populations developed by two kinds of recurrent selection methods investigated with SSR markers.

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Two cycles of biparental mass selection (MS) and one cycle of half-sib-S3 family combining selection (HS-S3) for yield were carried out in 2 synthetic maize populations (P4C0 and P5C0) synchronously. The genetic diversity among 8 maize populations, including the basic populations and their developed populations, was evaluated using 30 simple sequence repeat (SSR) primers. On the 30 SSR loci, 184 alleles were detected in these populations. In each locus, the number of alleles varied from 2 to 14 (6.13 on average). The number and ratio of polymorphic loci in both basic populations were higher than those in the developed populations. The mean gene heterozygosity did not significantly vary after MS, but decreased after HS-S3 in both basic populations. The mean genetic distance varied slightly after MS, but decreased at a greater degree after HS-S3 in basic populations. The range of genetic distance was wider after MS, and the genetic distance between populations developed by HS-S3 was generally lower than that in both basic populations. The number of genotypes increased after MS but decreased after HS-S3 in both basic populations. The intra-population genetic diversity was much more than the inter-population genetic diversity in both basic populations. All the indexes demonstrated that the genetic diversity among the populations after MS was similar to that of the basic populations. The genetic diversity was maintained during MS, but was reduced after HS-S3, indicating that heterogeneity between some of the individuals in the developed populations increased after MS, whereas the populations became more homozygotic after HS-S3.

著录项

来源
《Agricultural sciences in China》 |2008年第9期|1037-1045|共9页
作者
Li LuJiang; Yang KeCheng; Pan GuangTangRong TingZhao;
展开▼
作者单位

Maize Research Institute, Sichuan Agricultural University/Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Ya'an 625014, China.;

展开▼
收录信息
原文格式 PDF
正文语种英语
中图分类农业科学;
关键词
alleles; artificial selection; crop yield; genetic distance; genetic diversity; genetic polymorphism; heterogeneity; heterozygosity; homozygosity; loci; maize; population genetics; simple sequence repeats; Zea mays;

Genetic diversity of maize populations developed by two kinds of recurrent selection methods investigated with SSR markers.

摘要

著录项

相关主题

期刊订阅