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Antagonism of Actionomycetes F24 Fermentation Broth on Botrytis cinerea

RUAN Yun-fei,MU Rui-xia,WANG Ji-qing,JIAN Guang-yu,XING Yan(Forestry and Horticulture College,Henan Agricultural University,Zhengzhou 450002,China)  
In order to choose the biological control fungi which had the antagonist action to Botrytis cinerea,the method of detecting the fungi growth rate and inhibiting spore germination were be adopted to study the antagonist action of F24,F25,F26 and F27 on Botrytis cinerea.The result showed that the fermentation broth of F24 actinomycetes was in shallow brown colour,the hypha were in spherical shape and the quantity were the biggest among the four kinds of Actionomycetes.The antagonist action of fermentation filtrate of F24 actinomycetes fermated in E and C culture medium was strong,the bacteriostasis rate of 3ml of dosage were 79.8% and 78.9% respectively.The inhabitation rate of fermentation broth C and E without one time dilution were 82.76% and 83.95% respectively.
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