Loci Underlying Resistance to Sudden Death Syndrome and Fusarium solani in Field and Greenhouse Assays Do Not Correspond

摘要

In 1971, a new fungal disease, soybean Sudden Death Syndrome (SDS) was documented in Arkansas (Roy et al., 1989; Rupe 1989). This disease has now been observed in most of the major producing areas in the United States. Sudden death syndrome in soybean(Glycine max (L.) is caused by Fusarium solani f.sp. phaseoli (O'Donell and Gray, 1995). Leaf symptoms include a mosaic-like coloration of the leaves followed by interveinal chlorosis and necrosis (Roy et al., 1989; Rupe, 1989). However, the fungus is restricted to the roots where infection causes rotting and discoloration in the tap root and a loss of lateral roots (Roy et al., 1989; Rupe, 1989; O'Donell and Gray, 1995).