Construction of a genetic linkage map using MFLP and identification of molecular markers linked to domestication genes in narrow-leafed lupin (Lupinus angustifolius L.)

Cell Mol Biol Lett. 2005;10(2):331-44.

Abstract

A mapping population of F(8)derived recombinant inbred lines (RILs) was established from a cross between a domesticated breeding line 83A:476 and a wild type P27255 in narrow-leaf lupin (Lupinus angustifolius L.). The parents together with the 89 RILs were subjected to DNA fingerprinting using microsatellite-anchored fragment length polymorphism (MFLP) to rapidly generate DNA markers to construct a linkage map. Five hundred and twenty two unique markers of which 21% were co-dominant, were generated and mapped. Phenotypic data for the domestication traits: mollis (soft seeds), leucospermus (white flower and seed colour); Lentus (reduced pod-shattering), iucundis (low alkaloid), Ku (early flowering) and moustache pattern on seed coats; were included. Three to 7 molecular markers were identified within 5 cM of each of these domestication genes. The anthracnose resistance gene Lanr1 was also mapped. Linkage groups were constructed using MapManager version QTXb20, resulting in 21 linkage groups consisting of 7 or more markers. The total map length was 1543 cM, with an average distance of 3.4 cM between adjacent markers. This is the first published map for a lupin species. The map can be exploited for marker assisted selection for genetic improvement in lupin breeding programs.

MeSH terms

  • Chromosome Mapping*
  • Colletotrichum / pathogenicity
  • Crops, Agricultural / genetics*
  • Drug Resistance
  • Genetic Linkage*
  • Genetic Markers / genetics
  • Genome, Plant
  • Lod Score
  • Lupinus / anatomy & histology
  • Lupinus / genetics*
  • Phenotype
  • Plant Leaves / anatomy & histology*
  • Plant Leaves / genetics
  • Polymorphism, Genetic*

Substances

  • Genetic Markers