Wirkung von terpenderivaten (helminthosporol, helminthospors ure, dihydrohelminthospors ure und steviol) auf die antheridienbildung in Anemia phyllitidis

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Abstract
Helminthosporol, helminthosporic acid, dihydrohelminthosporic acid, and steviol have been tested for their ability to induce antheridium formation in Anemia phyllitidis. All helminthosporol derivatives posses a limited but real activity. Steviol proved to be inactive. All the substance tested have a significant effect on the cell division rate of the prothallia.