Floral initiation in strawberry: Spectral evidence for the regulation of flowering by long-day inhibition
- 1 January 1973
- journal article
- Published by Springer Nature in Planta
- Vol. 110 (2), 165-172
- https://doi.org/10.1007/bf00384839
Abstract
Floral initiation in strawberry cv. Cambridge Favourite, a facultative short-day plant, was inhibited by a daylength extension with red light (R) during the second half of a 16-hour night but not during the first half, and by far-red light (FR) in the first half but not during the second. Mixed R plus FR light was inhibitory to flowering at both times. This change in sensitivity to R and FR light in the evening and morning resembles the pattern for flower induction in long-day plants but differs from the pattern for flower inhibition in several other short-day plants, examples of which are given. These experiments afford further support for the hypothesis that the control of flower initiation in strawberry depends on the production of a flower inhibitor by leaves exposed to long photoperiods.Keywords
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