, Volume 29, Issue 1, pp 23–32 | Cite as

A cluster analysis of wild and domesticated soybean phenotypes

  • Steven L. Broich
  • Reid G. Palmer


Cluster analysis techniques were used to examine phenotypic variation within the USDA Soybean Germplasm Collection. This study included ten Plant Introductions each of the domesticated soybean, Glycine max (L). Merr., the ‘wild’ soybean, G. sojaSieb. & Zucc., and a disputed species, G. gracilisSkvortz.G. max and G. soja were found to be morphologically distinct entities and G. gracilis was found to be conspecific with G. max. Because G. gracilis probably represents weedy races associated with the cultivated soybean and because ‘gracilis’ phenotypes can be distinguished from G. max, the designation, G. max forma gracilis, is recommended.

Index words

Glycine gracilis Glycine max Glycine soja germplasm soybean numerical taxonomy cluster analysis 


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Copyright information

© H. Veenman en Zonen B.V. 1980

Authors and Affiliations

  • Steven L. Broich
    • 1
  • Reid G. Palmer
    • 1
  1. 1.Department of AgronomyIowa State UniversityAmesUSA

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