The Cotyledon in Relation to Photoperiodism in Cocklebur
- 1 December 1954
- journal article
- research article
- Published by University of Chicago Press in Botanical Gazette
- Vol. 116 (2) , 199-200
- https://doi.org/10.1086/335862
Abstract
Cotyledons of cocklebur (Xanthium sp.) were exposed to 8-hour photoperiods, either by covering the cotyledons with black cloth sleeves, or by placing in a dark room plants with epicotyl removed or undeveloped. No plants so treated bloomed. Plants with cotyledons exposed to 8-hr. photoperiods were grafted to plants on 17-hour photoperiods; no floral initiation resulted. As little as 7-8 cm2 of foliage leaves could produce the flowering stimulus when exposed to short photoperiods while the rest of the plant was on long photoperiods, whereas the average 9.2 cm2 of cotyledon area could not.This publication has 1 reference indexed in Scilit:
- Photoperiodism in Relation to Hormones as Factors in Floral Initiation and DevelopmentBotanical Gazette, 1938