Abstract
An experiment was carried out to examine the effects of light quality on the growth and development of antirrhinum under three different temperatures 19 °C, 24 °C and 27 °C in glasshouses. Five different colour filters (i.e. ‘Red absorbing’, ‘Blue absorbing’, ‘Blue and Red absorbing’ and two ‘partially Blue absorbing’ materials) were tested, with one clear polythene as a control. Plant height, internode length and leaf area were significantly affected by the spectral filters as well as the temperature. Analysis of color filter’s effect on presumed photoreceptors to exist indicated that antirrhinum plant height was regulated by the action of ablue acting photoreceptor (BAP) and not the phytochrome. There was no evidence for an effect of phytochrome or BAP on time to flowering, however, increasing temperature levels effectively decreased the time to flowring. To predict the effects of different spectral qualities and temperature, simple models were created from data on plant height, internode, length and time to flowering. These models were then applied to simulate the potential benefits of spectral filters and temperature in manipulation of growth control and flowering in antirrhinum.
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Khattak, A., Pearson, S. Light quality and temperature effects on antirrhinum growth and development. J Zheijang Univ Sci B 6, 119–124 (2005). https://doi.org/10.1631/jzus.2005.B0119
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DOI: https://doi.org/10.1631/jzus.2005.B0119