Über die Physiologischen Eigenschaften von Gewebekulturen aus Tumor- und normalem Gewebe vonPicea glauca

Summary

In contrast to other plant tumor tissues (crown gall and genetic tumors), that fromPicea glauca can be cultivated in vitro only in the presence of IAA. The auxin requirement for maximal growth of the tumor is appreciably higher (10⁻⁵ g/ml IAA) than that of normal Picea cultures (10⁻⁸ g/ml). A similar marked difference is also found in the ascorbic acid requirement, which is 10⁻⁵ g/ml for neoplastic, but 10⁻⁷ g/ml for normal tissue. The significance of these results for the characterisation and the in vitro growth of plant tumors is discussed.