Physiological Experiments in Connection with Flower Formation in Wedgwood Iris (Iris cv. “Wedgwood”)

In the early twenties Blaauw started his investigations in connection with bulb growing with a morphological study on the life-cycle of the hyacinth, a study that was soon extended to other bulbous plants and to more physiological aspects. For many years these investigations were continued at the Laboratory for Plant Physiological Research at Wageningen. Research on bulbs is also carried out at the Laboratory for Bulb Research at Lisse. Blaauw’s first article on iris appeared in 1933; it was followed by a great number of papers both by himself and his collaborators, of whom Miss Hartsema is still continuing and extending his work. Beyer, at Lisse, particularly worked on the retarding of irises.