Promotion of flower formation and fruit set in Citrus by antimetabolites of nucleic-acid and protein synthesis.

Shoots of the summer flush of Shamouti orange trees, which generally bear only few flowers in the following spring, were caused to produce an abundant number of flowers and eventually many mature fruits by treatments with chloramphenicol-succinate, 5-fluorodeoxyuridine and 5-bromo-3-sec-butyl-6-methyluracil (an herbicide). Increased bloom was accompanied by the shortening of internodes characteristic of flowering branchlets.