Can Bio-Based Stomatal Blockers Inhibit Rapeseed Growth?
Faralli, M., Weerasinghe, M.M., Leung, G.-S., Marriott, R., Miles, M., Monaghan, J.M. and Kettlewell, P.S. (2025) Can Bio-Based Stomatal Blockers Inhibit Rapeseed Growth? International Journal of Plant Biology, 16 (3). p. 98. ISSN 2037-0164
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P Kettlewell Can Bio-based Stomatal blockers inhibit rapeseed growth OCR Upload.pdf - Published Version Available under License Creative Commons Attribution. Download (1MB) |
Abstract
Stomatal blockers are hydrophobic polymers applied to leaves to physically block stomatal pores and restrict gas exchange, and which have potential as plant growth regulators to retard growth. Three experiments in a heated glasshouse, one sown in autumn and two sown in winter, were conducted with pot-grown rapeseed plants at the four-leaf stage to evaluate retardant potential of two bio-based polymers: di-1-p-menthene (DPM) and extracted cauliflower leaf wax. Both stomatal blockers reduced stomatal conductance and plant dry weight in the autumn-sown experiment, when solar radiation was high during leaf development and stomatal conductance of water-treated plants was relatively high. Wax was more effective than DPM at reducing plant dry weight, despite no difference in stomatal conductance. In the two winter-sown experiments, when solar radiation was lower during leaf development, stomatal conductance in water-treated plants was less than in the autumn-sown experiment. Stomatal conductance was reduced by the blockers in the winter-sown experiments, but plant dry weight was unaffected. It was concluded that stomatal blockers may have potential to act as plant growth regulators to retard growth in rapeseed, but further research is necessary to define the circumstances when a response will occur.
| Item Type: | Article |
|---|---|
| Keywords: | oilseed rape, canola, porometer, terpene, epicuticular wax, PGR, delay, hold, slow, inhibit |
| Divisions: | Agriculture and Environment (from 1.08.20) |
| Depositing User: | Mrs Susan Howe |
| Date Deposited: | 27 Oct 2025 13:11 |
| Last Modified: | 27 Oct 2025 13:11 |
| URI: | https://hau.repository.guildhe.ac.uk/id/eprint/18266 |
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