Effect of Cercospora kikuchii on soybean seed germination and its interaction with Phomopsis sp. Purple seed stain, Glycine max, reduction of seed decay by inoculation with Cercospora kikuchii.

Reference Report for IND83080229

Title:	Effect of Cercospora kikuchii on soybean seed germination and its interaction with Phomopsis sp. Purple seed stain, Glycine max, reduction of seed decay by inoculation with Cercospora kikuchii.
Authors:	Yeh, C.C., Sinclair, J.B.
Source:	Phytopath. Zeit. 1982, 105(3/4):265-270
Abstract:	With increasing purple stain caused by C. kikuchii on seed coats, seed germination on potato-dextrose agar, moist cellulose pads or sand was reduced. Stunted and low vigor seedlings resulted from seeds with 50% or more seed surface stained. There was no antagonism between C. kikuchii and P. sp. in dual culture on PDA. Culture filtrates of C. kikuchii stimulated the growth of P. sp., a linear relationship being recorded between filtrate conc. and growth of P. sp. on water agar. Cercosporin from purple-stained seed coats at 1000 mu g/ml did not inhibit the growth of P. sp. Nutritional depletion and/or competition for space are suggested to explain the low incidence of P. sp. in seeds colonized by C. kikuchii.

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