Macrophomina phaseolina, another cause of the twin-stem abnormality disease of soybean

Reference Report for ADL87030090

Title:	Macrophomina phaseolina, another cause of the twin-stem abnormality disease of soybean
Authors:	Bristow, P.R., Wyllie, T.D.
Source:	Plant Dis. 1986, 70(12):1052-1153
Abstract:	Symptoms of the twin-stem abnormality disease were observed on seedlings of eight of 14 genotypes when apparently healthy seed was sown in vermiculite infested with Macrophomina phaseolina. Infected genotypes were Adelphia, Amsoy-71, Calland, Clark-63, Hill, Mandarin, Mukden, and Williams. Disease incidence ranged from 7 to 45%. The genotypes A-100, A. K. (Harrow), Beeson, Cutler, Dunfield, and PI 92-964 did not show the twin-stem symptom and were apparently resistant. This abnormality disease, though reported to be caused by Sclerotium sp., may be a general response when seedlings are infected by several seedborne or soilborne pathogens.

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