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RE‐EXAMINATION OF A NUMERICAL TAXONOMIC STUDY OF SOLANUM SPECIES AND HYBRIDS
Author(s) -
Schilling Edward E.,
Heiser Charles B.
Publication year - 1976
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.2307/1220527
Subject(s) - hybrid , principal component analysis , biology , taxon , numerical taxonomy , solanum , botany , taxonomy (biology) , evolutionary biology , statistics , mathematics
Summary Data of Heiser et al. (1965) on species, hybrids, autoploids, and alloploids in Solanum were re‐examined using additional methods of numerical analysis. The phenogram produced after the removal of hybrids from the data matrix indicated that distortion of taxa observed in the phenogram of the previous study was due to the influence of hybrids. Hybrids, with one exception, were found to fall in an intermediate position relative to their parents in the graph obtained from principal components analysis. The ability to display intermediate groups makes principal components analysis better suited than cluster analysis for revealing hybrids from phenetic data.