Terpene Biosynthesis in Cell-free Extracts and Excised Shoots from Wedgwood Iris.

Excised shoots and cell-free extracts prepared from Wedgwood iris (Iris hollandica Hoog. "Wedgwood") shoots metabolized (14)C-labeled mevalonic acid (MVA). By using cell-free extracts, the (14)C from MVA-1-(14)C was recovered as (14)CO(2), while that from MVA-2-(14)C was recovered as neutral terpenes, acid-hydrolyzable terpenes, or (14)CO(2).

Temperature Regulation of Endogenous Gibberellin Activity and Development of Tulipa gesneriana L.

The changes in the contents of free and bound gibberellin-like activity (GA) of Tulipa gesneriana L. cv. Ralph during development under 2 temperature conditions were studied.