Development of two sequence-specific PCR markers linked to the le gene that reduces pod shattering in narrow-leafed lupin (Lupinus angustifolius L.)

J.G. Boersma, B.J. Buirchell, Krishnapillai Sivasithamparam, H. Yang

Research output: Contribution to journalArticle

Abstract

Wild types of narrow-leaf lupin (Lupinus angustifolius L.) have seed pods that shatter upon maturity, leading to the loss of their seeds before or during the harvest process. Two recessive genes have been incorporated into domesticated cultivars of this species to maximize harvest-ability of the produce. One of these genes is called lentus (le). Two microsatellite - anchored fragment length polymorphism (MFLP) candidate markers were identified as closely linked to the le gene in a recombinant inbred line (RIL) population derived from a domesticated x wild type cross. The candidate MFLP markers were isolated from the gel, re-amplified by PCR, cloned and sequenced. The MFLP polymorphisms were converted into sequence-specific PCR-based markers. Linkage analysis by MapManager indicated that one of the markers, LeM1, was 2.6 centiMorgans (cM) and the other, LeM2, was 1.3 cM from the gene, with both being on the same side. The correlation between the marker genotype and the plant phenotype for the le gene is 95% for the Australian cultivars, and approximately 36% on wild types tested. These markers may be useful in marker assisted selection for the le gene when introgressing wild material into lupin breeding programs.
Original languageEnglish
Pages (from-to)623-629
JournalGenetics and Molecular Biology
Volume30
Issue number3
DOIs
Publication statusPublished - 2007

    Fingerprint

Cite this