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Cuphea lanceolata Ait. has had a significant role in the domestication of Cuphea and is a useful experimental organism for investigating how medium-chain lipids are synthesized in developing seeds. To expand the genetics of this species, a linkage map of the C. lanceolata genome was constructed using five allozyme and 32 restriction-fragment-length-polymorphism (RFLP) marker loci. These loci were assigned to six linkage groups that correspond to the six chromosomes of this species. Map length is 288 cM. Levels of polymorphism were estimated for three inbred lines of C. lanceolata and an inbred line of C. viscosissima using 84 random genomic clones and two restriction enzymes, EcoRI and HindIII. Of the probes 29% detected RFLPs between C. lanceolata and C. viscosissima lines. Crosses between these species can be exploited to expand the map.
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