Abstract
Taxonomic and phylogenetic determinations within the genus Musa are established using a numerical, morphology-based scoring system. However, within this system, the classification and relationships of some types are disputed. The application of chloroplast DNA (cpDNA) restriction fragment length polymorphism (RFLP) analysis to Musa taxonomy provided valuable, supplemental information about the classification of, and relationships between, Musa species and subspecies. Whole-cell DNA was extracted from lyophilized Musa leaf-blade tissue and digested with various restriction enzymes, Southern blotted onto nylon membranes, and probed using radioactively labeled heterologous orchid cpDNA fragments. Phylogenies were inferred from cpDNA RFLP patterns using PAUP software. The relationships between most species examined were as expected; however, some species (M. beccarii and M. basjoo) did not conform to the conventional morphology-based phylogeny.
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