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Light quality and temperature effects on antirrhinum growth and development

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2005年第2期6卷 119-124页

作者： KHATTAK Abdul Mateen PEARSON Simon Department of Horticulture Marks and Spenser Public Limited Company NWFP Agricultural University Peshawar Pakistan Michael House Baker Street London WIA IDN UK

An experiment was carried out to examine the effects of light quality on the growth and development of antirrhinum under three different temperatures 19℃, 24℃ and 27℃ 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 *** of color filter's effect on presumed photoreceptors to exist indicated that antirrhinum plant height was regulated by the action of a blue acting photoreceptor (BAP) and not the phytochrome. There was no evidence for an effect ofphytochrome or BAP on time to flowering, however, increasing temperature levels effectively decreased the time to flowering. 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.

关键词： Antirrhinum Light quality Temperature spectral filters Photoreceptors

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