In vitro growth of four isolates of Sclerotium rolfsii Sacc in the humid tropics

Abstract

Investigation was carried out on Sclerotium rolfsii isolated from four plant parts on PDA media for differences in the mycelia and sclerotia growth, in the tropical humid lowlands of Southeastern Nigeria. The result reveals that there were variation in the number and size (in diameter) of the sclerotia
produced by the isolates. The mycelia growth rate was same in all the isolates covering the 9.0 cm plates at the 7 and 8 day after inoculation. These sclerotia constitute the major source of inoculum for the organism in nature.