Abstract
Accessions of 12 perennial Glycine species were evaluated for resistance to Phakopsora pachyrhizi, the causal agent of soybean rust. A total of 23% of the accessions were resistant, 18% were moderately resistant, and 58% were susceptible. In two experiments, 59 and 40% of the accessions of G. tabacina (2n=80) were resistant. Resistance to P. pachyrhizi was identified in accessions of G. argyrea, G. canescens, G. clandestina, G. latifolia, G. microphylla, and G. tomentella, but not in accessions of G. arenaria, G. cyrtoloba, G. curvata, and G. falcata
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