POPULATION STRUCTURE AND GENETIC DIVERSITY OF MAIZE LANDRACES FROM THE SOUTHWEST MAIZE REGION OF CHINA

被引：0

作者：

Liu, Z. Z. ^{[1
,2
]}

Guo, R. H. ^{[1
,3
]}

Zhao, J. R. ^{[4
]}

Cai, Y. L. ^{[2
]}

Wang, F. G. ^{[4
]}

Cao, M. J. ^{[3
]}

Wang, R. H. ^{[1
,4
]}

Shi, Y. S. ^{[1
]}

Song, Y. C. ^{[1
]}

Wang, T. Y. ^{[1
]}

Li, Y. ^{[1
]}

机构：

[1] Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Gene Resources & Genet Improvement, Beijing 100081, Peoples R China

[2] Southwest Univ, Maize Res Inst, Chongqing 400715, Peoples R China

[3] Sichuan Agr Univ, Maize Res Inst, Yaan 625014, Sichuan, Peoples R China

[4] Beijing Acad Agr & Forestry Sci, Maize Res Ctr, Beijing 100089, Peoples R China

来源：

MAYDICA | 2009年 / 54卷 / 01期

基金：

北京市自然科学基金;

关键词：

Genetic diversity; Landraces; Maize; Population structure; Zea mays; INBRED LINES; CORE COLLECTION; INFERENCE; POLYMORPHISMS; MARKERS; LOCI;

D O I：

暂无

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Landraces are important genetic resources for crop improvement and genetic studies. Two hundred and forty seven maize landraces from the Southwest Maize Region (SWR) of China preserved in China National Genebank. which are members of a core collection established previously, were assayed to reveal the level of genetic diversity and population structure of the landraces in SWR, by using 53 simple sequence repeat (SSR) markers. A total of 599 alleles (11.30 per locus) and a relatively high level of genetic diversity (0.60) were detected in these 247 landrace accessions, indicating abundant genetic variations of the maize landraces from this region and valuable germplasm which can be used in maize improvement. Revealed by the phylogenetic analysis, the 247 landraces from SWR were divided into three distinct clusters. The results were further confirmed by model-based clustering method and Bayesian approach. Chi-square test revealed that the groups resulting from these statistical analyses agreed quite well with geographical sources of the accessions in SWR.

引用

页码：63 / 76

页数：14

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