| Title |
The first SSR-based genetic linkage map for cultivated groundnut (Arachis hypogaea L.)
|
|---|---|
| Published in |
Theoretical and Applied Genetics, December 2008
|
| DOI | 10.1007/s00122-008-0933-x |
| Pubmed ID | |
| Authors |
R. K. Varshney, D. J. Bertioli, M. C. Moretzsohn, V. Vadez, L. Krishnamurthy, R. Aruna, S. N. Nigam, B. J. Moss, K. Seetha, K. Ravi, G. He, S. J. Knapp, D. A. Hoisington |
| Abstract |
Molecular markers and genetic linkage maps are pre-requisites for molecular breeding in any crop species. In case of peanut or groundnut (Arachis hypogaea L.), an amphidiploid (4X) species, not a single genetic map is, however, available based on a mapping population derived from cultivated genotypes. In order to develop a genetic linkage map for tetraploid cultivated groundnut, a total of 1,145 microsatellite or simple sequence repeat (SSR) markers available in public domain as well as unpublished markers from several sources were screened on two genotypes, TAG 24 and ICGV 86031 that are parents of a recombinant inbred line mapping population. As a result, 144 (12.6%) polymorphic markers were identified and these amplified a total of 150 loci. A total of 135 SSR loci could be mapped into 22 linkage groups (LGs). While six LGs had only two SSR loci, the other LGs contained 3 (LG_AhXV) to 15 (LG_AhVIII) loci. As the mapping population used for developing the genetic map segregates for drought tolerance traits, phenotyping data obtained for transpiration, transpiration efficiency, specific leaf area and SPAD chlorophyll meter reading (SCMR) for 2 years were analyzed together with genotyping data. Although, 2-5 QTLs for each trait mentioned above were identified, the phenotypic variation explained by these QTLs was in the range of 3.5-14.1%. In addition, alignment of two linkage groups (LGs) (LG_AhIII and LG_AhVI) of the developed genetic map was shown with available genetic maps of AA diploid genome of groundnut and Lotus and Medicago. The present study reports the construction of the first genetic map for cultivated groundnut and demonstrates its utility for molecular mapping of QTLs controlling drought tolerance related traits as well as establishing relationships with diploid AA genome of groundnut and model legume genome species. Therefore, the map should be useful for the community for a variety of applications. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 50% |
| Australia | 1 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Scientists | 2 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 127 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Philippines | 1 | <1% |
| United States | 1 | <1% |
| Kyrgyzstan | 1 | <1% |
| Brazil | 1 | <1% |
| Unknown | 123 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 30 | 24% |
| Researcher | 29 | 23% |
| Student > Master | 16 | 13% |
| Student > Doctoral Student | 10 | 8% |
| Student > Postgraduate | 6 | 5% |
| Other | 15 | 12% |
| Unknown | 21 | 17% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 87 | 69% |
| Biochemistry, Genetics and Molecular Biology | 6 | 5% |
| Computer Science | 2 | 2% |
| Environmental Science | 1 | <1% |
| Pharmacology, Toxicology and Pharmaceutical Science | 1 | <1% |
| Other | 6 | 5% |
| Unknown | 24 | 19% |
Attention Score in Context
This research output has an Altmetric Attention Score of 9. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 20 January 2019.
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#3,840,788
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Outputs from Theoretical and Applied Genetics
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#20,550
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Outputs of similar age from Theoretical and Applied Genetics
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