Inhibition of Flowering by Light in the Short-Day Plant Salvia occidentalis

See allHide authors and affiliations

Science  01 Jan 1965:
Vol. 147, Issue 3653, pp. 60-61
DOI: 10.1126/science.147.3653.60


Long days (continuous light) have inhibitory effects on Salvia occidentalis by producing transmissible substances that suppress flowering. Only when the inhibition at the apex is removed can flowering proceed normally.