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An integrated genetic linkage map of cultivated peanut (Arachis hypogaea L.) constructed from two RIL populations

文献类型： 外文期刊

作者： Qin, Hongde 2 ; Feng, Suping 2 ; Chen, Charles 5 ; Guo, Yufang 6 ; Knapp, Steven 6 ; Culbreath, Albert 2 ; He, Guohao; 1 ;

作者机构： 1.ARS, Crop Protect & Management Res Unit, USDA, Tifton, GA USA

2.Univ Georgia, Dept Plant Pathol, Tifton, GA 31793 USA

3.Hubei Acad Agr Sci, Cash Crop Res Inst, Wuhan, Peoples R China

4.Qiongzhou Univ, Coll Biosci & Biotechnolgy, Sanya, Hainan, Peoples R China

5.ARS, Natl Peanut Res Lab, USDA, Dawson, GA USA

6.Univ Georgia, Ctr Appl Genet Technol, Athens, GA 30602 USA

7.Tuskegee Univ, Ctr Plant Biotechnol, Tuskegee, AL 36088 USA

8.ARS, Plant Genet Resources Conservat Unit, USDA, Griffin, GA USA

9.Henan Acad Agr Sci, Peanut Res Unit, Zhengzhou, Peoples R China

10.ARS, Crop Genet & Breeding Res Unit, USDA, Tifton, GA USA

11.Univ Georgia, Dept Hort, Tifton, GA USA

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）

ISSN： 0040-5752

年卷期： 2012 年 124 卷 4 期

页码：

收录情况： SCI

摘要： Construction and improvement of a genetic map for peanut (Arachis hypogaea L.) continues to be an important task in order to facilitate quantitative trait locus (QTL) analysis and the development of tools for marker-assisted breeding. The objective of this study was to develop a comparative integrated map from two cultivated x cultivated recombinant inbred line (RIL) mapping populations and to apply in mapping Tomato spotted wilt virus (TSWV) resistance trait in peanut. A total of 4,576 simple sequence repeat (SSR) markers from three sources: published SSR markers, newly developed SSR markers from expressed sequence tags (EST) and from bacterial artificial chromosome end-sequences were used for screening polymorphisms. Two cleaved amplified polymorphic sequence markers were also included to differentiate ahFAD2A alleles and ahFAD2B alleles. A total of 324 markers were anchored on this integrated map covering 1,352.1 cM with 21 linkage groups (LGs). Combining information from duplicated loci between LGs and comparing with published diploid maps, seven homoeologous groups were defined and 17 LGs (A1-A10, B1-B4, B7, B8, and B9) were aligned to corresponding A-subgenome or B-subgenome of diploid progenitors. One reciprocal translocation was confirmed in the tetraploid-cultivated peanut genome. Several chromosomal rearrangements were observed by comparing with published cultivated peanut maps. High consistence with cultivated peanut maps derived from different populations may support this integrated map as a reliable reference map for peanut whole genome sequencing assembling. Further two major QTLs for TSWV resistance were identified for each RILs, which illustrated the application of this map.

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