Abstract
The effects ofSclerotinia sclerotiorum live and autoclaved sclerotia, and sclerotial exudates, and commercial oxalic acid were testedin vitro on sevenConiothyrium minitans strains differing in aggressiveness towardsS. sclerotiorum. Only sclerotial exudates and autoclaved sclerotia affected the mycelial growth rate of almost all the strains tested, whereas a change in theC. minitans mycelial growth pattern was observed in the presence of autoclaved sclerotia and live sclerotia germinating by the myceliogenic eruptive germination. In addition, sclerotial exudates had a stimulatory effect on spore germination. These findings indicate that the various treatments could influence theC. minitans strains regardless of their aggressiveness.
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