Journal
PLANT BREEDING
Volume 126, Issue 3, Pages 306-309Publisher
BLACKWELL PUBLISHING
DOI: 10.1111/j.1439-0523.2007.01347.x
Keywords
Lupinus angustifolius; early flowering; simple sequence repeat-PCR marker
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Wild types of Lupinus angustifolius require vernalization to promote flowering. Modern domesticated cultivars carry the early-flowering gene Ku which removes this requirement. A microsatellite-anchored fragment length polymorphism marker was identified as co-segregating with the Ku gene in a recombinant inbred line (RIL) population derived from a domesticated x wild-type cross. DNA sequencing showed that the marker contained a 7 bp insertion/deletion polymorphism, as well as a single nucleotide polymorphism. A pair of sequence-specific primers was designed and successfully converted the size polymorphism into a simple polymerase chain reaction based co-dominant marker. This marker is closely linked to the Ku gene, as it co-segregates with the Ku phenotyping in a population consisting of 106 RILs.
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