Variation at RFLP loci in Lactuca spp. and origin of cultivated lettuce (L. sativa)
作者： Rick Kesseli , Oswaldo Ochoa , Richard Michelmore
DOI: 10.1139/G91-065
关键词: Genetic marker 、 Lactuca 、 Lactuca saligna 、 Genetic variation 、 Biology 、 Botany 、 Restriction fragment length polymorphism 、 Lactuca virosa 、 Genetic distance 、 Lactuca perennis
摘要: We have examined 67 accessions of Lactuca sativa L. and five related species for variation at restriction fragment length polymorphism loci. Fifty-five clones were used to probe genomic DNA digested separately with three endonucleases; this defined 143 Variation in was sampled detail. is closely serriola but not any the other survey: saligna, virosa, perennis, indica. However, a direct extraction from populations serriola; or some unknown entities involved evolution cultivated lettuce. Numerous genetic differences characterized each type, suggesting polyphyletic origin sativa.Key words: sativa, lettuce, variation, phylogeny, polymorphism.
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