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Phylogenetic Relationships among North American Popcorns and Their Evolutionary Links to Mexican and South American Popcorns

^a Colegio de Postgraduados, Montecillo, Edo. de México, Mexico 56230
^b USDA-ARS and Dep. of Agronomy, Iowa State Univ., Ames, IA 50011-1170
^c Dep. of Agronomy, Iowa State Univ., Ames, IA 50011-1010
^d USDA-ARS, Beltsville, MD 20715-5139

View larger version (48K): [in a new window]   Fig. 1. Phylogenetic tree produced by a Neighbor-Joining analysis for 56 maize populations based on a matrix of Gower distances derived from 29 morphological traits, 58 isozyme alleles, and 191 SSR alleles.

View larger version (22K): [in a new window]   Fig. 2. Representation of the first and second principal components based on the correlations matrix among 29 morphological traits, 58 isozyme alleles, and 191 SSR alleles scored for 56 maize populations.

View larger version (18K): [in a new window]   Fig. 3. Representation of the first and third principal components based on the correlations matrix among 29 morphological traits, 58 isozyme alleles, and 191 SSR alleles scored for 56 maize populations.