Under different carbon and nitrogen sources and pH value,the colony growth and sporulation of Colletotrichum nigrum isolated from pepper were evaluated after cultured several days.The results indicated that the mycelial growth was different under different carbon and nitrogen sources.The optimum nitrogen sources were maltose and glucose,and the next were sucrose,D-mannose and xylose.Glycin and L-tyrosine were the optimum nitrogen sources,and then L-leucine and L-asparagine.pH value determined the sporulatio...