Floral Inducing Extract from Xanthium

Science  23 Jan 1970:
Vol. 167, Issue 3917, pp. 384-385
DOI: 10.1126/science.167.3917.384


Flower formation was initiated in Lemna by acetone extracts of flowering cocklebur (Xanthium). These extracts also initiated flower formation in Xanthium when they were supplemented with gibberellic acid. No flower formation was initiated in dluckweed (Lemna) or Xanthium by extracts from vegetative Xanthium. Extracts from vegetative plants supplemented ivith gibberellic acid did not initiate flowers in Xanthium or Lemna.