Massive Sorghum Collection Genotyped with SSR Markers to Enhance Use of Global Genetic Resources

被引:55
作者
Billot, Claire [1 ]
Ramu, Punna [2 ]
Bouchet, Sophie [1 ]
Chantereau, Jacques [1 ]
Deu, Monique [1 ]
Gardes, Laetitia [1 ]
Noyer, Jean-Louis [1 ]
Rami, Jean-Francois [1 ]
Rivallan, Ronan [1 ]
Li, Yu [3 ]
Lu, Ping [3 ]
Wang, Tianyu [3 ]
Folkertsma, Rolf T. [2 ]
Arnaud, Elizabeth [4 ]
Upadhyaya, Hari D. [2 ]
Glaszmann, Jean-Christophe [1 ]
Hash, C. Thomas [2 ]
机构
[1] Cirad, UMR AGAP, Montpellier, France
[2] Int Crops Res Inst Semi Arid Trop, Hyderabad, Andhra Pradesh, India
[3] Chinese Acad Agr Sci CAAS, Inst Crop Sci, Beijing, Peoples R China
[4] Biovers Int, Montpellier, France
来源
PLOS ONE | 2013年 / 8卷 / 04期
关键词
RFLP LINKAGE MAP; POPULATION-STRUCTURE; CORE COLLECTION; DIVERSITY; WILD; CONSTRUCTION; GENOME; CLASSIFICATION; LANDRACES; GERMPLASM;
D O I
10.1371/journal.pone.0059714
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Large ex situ collections require approaches for sampling manageable amounts of germplasm for in-depth characterization and use. We present here a large diversity survey in sorghum with 3367 accessions and 41 reference nuclear SSR markers. Of 19 alleles on average per locus, the largest numbers of alleles were concentrated in central and eastern Africa. Cultivated sorghum appeared structured according to geographic regions and race within region. A total of 13 groups of variable size were distinguished. The peripheral groups in western Africa, southern Africa and eastern Asia were the most homogeneous and clearly differentiated. Except for Kafir, there was little correspondence between races and marker-based groups. Bicolor, Caudatum, Durra and Guinea types were each dispersed in three groups or more. Races should therefore better be referred to as morphotypes. Wild and weedy accessions were very diverse and scattered among cultivated samples, reinforcing the idea that large gene-flow exists between the different compartments. Our study provides an entry to global sorghum germplasm collections. Our reference marker kit can serve to aggregate additional studies and enhance international collaboration. We propose a core reference set in order to facilitate integrated phenotyping experiments towards refined functional understanding of sorghum diversity.
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页数:16
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