ZUR KENNTNIS MITTELASIATISCHEN MUTTERKORNS1

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Abstract
A strain of Claviceps purpurea collected from a species of Agropyrum in the desert of Hi was investigated. The sclerotia originally collected contained principally ergometrin. The strain was parasitically cultivated on rye. The sclerotia produced on rye contained 0,2 % of total alkaloids 80 % of which proved to be ergometrin. Therefore it seems that the character of predominant ergometrin production is hereditally fixed. This is the first instance that such a strain was found. In saprophytic culture this strain does not accumulate alkaloids. On the other hand in many instances large amounts of pigments are synthesised. Two of the pigments could be identified as endocrocin and clavorubin, the anthraquinons isolated by Franck from ergot of rye.

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