The first SSR-based genetic linkage map for cultivated groundnut (Arachis hypogaea L.)

• DOI: 10.1007/s00122-008-0933-x
• Publication Date: 2008-12-01T14:06:42Z
• 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
• Keywords: Arachis; Genetic linkage; Arachis hypogaea

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 map is, however, available based on mapping population derived from cultivated genotypes. order to develop tetraploid groundnut, total 1,145 microsatellite simple sequence repeat (SSR) public domain as well unpublished several sources were screened two genotypes, TAG 24 ICGV 86031 that parents recombinant inbred line population. As result, 144 (12.6%) polymorphic identified these amplified 150 loci. A 135 SSR loci could be mapped into 22 groups (LGs). While six LGs had only loci, the other contained 3 (LG_AhXV) 15 (LG_AhVIII) used developing segregates drought tolerance traits, phenotyping data obtained transpiration, transpiration efficiency, specific leaf area SPAD chlorophyll meter reading (SCMR) 2 years analyzed together with genotyping data. Although, 2–5 QTLs each trait mentioned above identified, phenotypic variation explained by was range 3.5–14.1%. addition, alignment (LGs) (LG_AhIII LG_AhVI) developed shown AA diploid genome Lotus Medicago. The present study reports construction first demonstrates its utility controlling related traits establishing relationships model legume Therefore, should useful community variety applications.