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Using flowering times and leaf numbers to model the phases of photoperiod sensitivity in antirrhinum majus L.
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Adams, S. R., Munir, M., Valdes, V. M., Langton, F. A. and Jackson, Stephen D. (2003) Using flowering times and leaf numbers to model the phases of photoperiod sensitivity in antirrhinum majus L. Annals of Botany, Volume 92 (Number 5). pp. 689-696. doi:10.1093/aob/mcg194 ISSN 0305-7364.
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Official URL: http://dx.doi.org/10.1093/aob/mcg194
Abstract
A model has been developed that can be used to determine the phases of sensitivity to photoperiod for seedlings subjected to reciprocal transfers at regular intervals between long (LD) and short day (SD) conditions. The novel feature of this approach is that it enables the simultaneous analysis of the time to flower and number of leaves below the inflorescence. A range of antirrhinum cultivars were grown, all of which were shown to be quantitative long‐day plants. Seedlings were effectively insensitive to photoperiod when very young (juvenile). However, after the end of the juvenile phase, SD delayed flowering and increased the number of leaves below the inflorescence. Plants transferred from LD to SD showed a sudden hastening of flowering and a decrease in leaf number once sufficient LD had been received for flower commitment. Photoperiod had little effect on the rate of flower development. The analysis clearly identified major cultivar differences in the length of the juvenile phase and the photoperiod‐sensitive inductive phase in both LD and SD.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||
Journal or Publication Title: | Annals of Botany | ||||
Publisher: | Oxford University Press | ||||
ISSN: | 0305-7364 | ||||
Official Date: | November 2003 | ||||
Dates: |
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Volume: | Volume 92 | ||||
Number: | Number 5 | ||||
Page Range: | pp. 689-696 | ||||
DOI: | 10.1093/aob/mcg194 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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