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Author Lumsden, P. J., & Furuya, M.
Title Evidence for Two Actions of Light in the Photoperiodic Induction of Flowering in <italic>Pharbitis nil</italic> Type Journal Article
Year 1986 Publication Plant and Cell Physiology Abbreviated Journal (down)
Volume Issue Pages
Keywords Plants
Abstract Using one-day-old light-grown seedlings of Pharbitis nil we have shown that there are two distinct responses to light during the inductive dark period. The first is the classic night-break, which inhibits flowering at a specific stage of the circadian rhythm (assumed to be the basis of dark time measurement). The second action is to control the phase of this rhythm. The two responses were compared at the 6th and 8th hour of darkness. They differed in their dose responses, and by using very short exposures it was possible to achieve one response without the other. The response of the rhythm to light displayed characteristics of other circadian rhythms; the direction and sensitivity of the phase shift changed between the 6th and 8th h, the rhythm was reset by longer exposures to light, and with one critical light treatment at the appropriate phase, the rhythm was apparently abolished. These results offer direct support for an external coincidence model in the photoperiodic control of floral induction.
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ISSN 1471-9053 ISBN Medium
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Notes Approved no
Call Number IDA @ intern @ Serial 2375
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Author Adams, J.
Title Duration of Light and Growth Type Journal Article
Year 1924 Publication Annals of Botany Abbreviated Journal (down)
Volume 38 Issue 151 Pages 509-523
Keywords Plants
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Call Number GFZ @ kyba @ Serial 2391
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Author Adams, J.
Title The Effect on Certain Plants of altering the Daily Period of Light Type Journal Article
Year 1923 Publication Annals of Botany Abbreviated Journal (down)
Volume 37 Issue 145 Pages 75-94
Keywords Plants
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Call Number GFZ @ kyba @ Serial 2406
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Author Moore, B.
Title The Relative Length of Day and Night Type Journal Article
Year 1920 Publication Ecology Abbreviated Journal (down)
Volume 1 Issue 3 Pages 234-237
Keywords Plants
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ISSN 0012-9658 ISBN Medium
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Notes Approved no
Call Number GFZ @ kyba @ Serial 2407
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Author PENG, Y., ZHANG, H., GUO, K., DING, Y., WANG, X.
Title The Safe Distance Between Road Lighting Fixtures and Street Trees. Type Journal Article
Year 2019 Publication Journal of Landscape Research Abbreviated Journal (down)
Volume 11 Issue 2 Pages 41-43
Keywords Plants; Planning
Abstract The road lighting system and the road greening system, which are mutually interrelated and independent, are two important parts in the urban road environment Unreasonable road lighting is easy to induce light pollution and has a great negative impact on the physiology and growth of garden plants in the urban green space. In this paper; 21 kinds of common tree species in the urban green space of Zhengzhou were selected as the research object, and the photosynthetic physiological parameters of landscape trees under the TKD light source were observed using LI-6400 Photosynthesis System. This paper attempted to find the critical point for initiating photosynthesis of different types of tree species under a certain light source and then calculated the safe distance between lighting fixtures and landscape trees. The results showed that road lighting interfered with the photosynthetic physiological activities of the surveyed trees, affecting the normal dormancy of the plants at night; the sensitivity of different tree species to night lighting was different, and there were some differences in the light compensation points, so the corresponding safe distance was also different It is hoped that this study can provide a valuable reference and scientific basis for urban toad greening and lighting design.
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Notes Approved no
Call Number IDA @ intern @ Serial 2648
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