A CAPS marker set for mapping in linkage group III of pea (Pisum sativum L.)
A set of twelve CAPS markers was mapped for linkage group III of pea (Pisum sativum L.). New primers were designed to use a polymerase chain reaction to amplify fragments of sequenced pea genes containing at least one large intron. Amplification products were tested for polymorphism across three pea lines (Chi115, Flagman and WL1238) using eleven four-base restriction endonucleases. Nine STS markers for linkage group III from the literature were also tested for polymorphism, and five of these were used in this mapping study as anchor points. All polymorphic loci were located by genetic analysis of the F(2)population from the cross Chi115 x WL1238, and a map of linkage group III consisting of one morphological and twelve CAPS markers was created. The map covers the full length of the chromosome and is about 162 cM long. All the CAPS markers in a set were used to test for polymorphism among 10 additional pea DNA samples extracted from different marker lines and cultivars.
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