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Published online by Cambridge University Press: 03 October 2008
Cross-inoculation tests among ten Acacia species and cowpea (Vigna sinensis) showed that eight Acacia spp were related to cowpea while two were independent and this agreed with the placement of Acacia in the cowpea group. The Acacia rhizobia showed certain cultural and physiological similarities to the cowpea Rhizobium and were resistant to high temperatures.