Sources of Resistance to Soybean Rust in Perennial Glycine Species. G. L. Hartman, Plant Pathologist, Asian Vegetable Research and Development Center, P.O. Box 42, Shanhua, Tainan 74199, Taiwan, R.O.C.. T. C. Wang, and T. Hymowitz. Associate Specialist, Asian Vegetable Research and Development Center, P.O. Box 42, Shanhua, Tainan 74199, Taiwan, R.O.C.; and Professor, Department of Agronomy, University of Illinois, Urbana 61801. Plant Dis. 76:396-399. Accepted for publication 26 October 1991. Copyright 1992 The American Phytopathological Society. DOI: 10.1094/PD-76-0396.

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. clandestine, G. latifolia, G. microphylla, and G. tomentella, but not in accessions of G. arenaria, G. cyrtoloba, G. curvata, and G. falcata.