Abstract
Soluble enzymes were extracted from 23 geographically diverse isolates of Trichoderma harzianum and compared by electrophoresis. Seven enzyme systems were assayed and the isolates were grouped into five different types according to their isozymic profiles. The results indicate that enzyme electrophoresis can be used to distinguish between T. harzianum isolates. The potential of this system for T. harzianum breeding is discussed.
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