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Titlebook: Light and Plant Growth; J. W. Hart Book 1988 J. W. Hart 1988 Phytochrome.development.growth.physiology.plant

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樓主: 短暫
31#
發(fā)表于 2025-3-26 21:21:05 | 只看該作者
32#
發(fā)表于 2025-3-27 01:29:31 | 只看該作者
33#
發(fā)表于 2025-3-27 07:37:48 | 只看該作者
34#
發(fā)表于 2025-3-27 11:08:29 | 只看該作者
35#
發(fā)表于 2025-3-27 14:05:51 | 只看該作者
Orientation in space: phototropism,ed by the anatomy of the responding organ. The actual direction of the response can be towards (.) or away from (.) the stimulus; or it can be at a right angle (.-tropic) or at some other angle (.-tropic) to the direction of stimulus.
36#
發(fā)表于 2025-3-27 19:38:38 | 只看該作者
37#
發(fā)表于 2025-3-27 22:48:01 | 只看該作者
General introduction,ith its sensibility towards the Sun. In our own society, despite the development of artificial lighting systems, we (and the plant world which supports us) are no less dependent upon sunlight. Even the fossil fuels which are utilized so intensively at present, partly to generate artificial light, represent past entrapments of the Sun’s energy.
38#
發(fā)表于 2025-3-28 03:14:20 | 只看該作者
Radiant Energy,, λ (lambda), the length of a cycle; and frequence, v (nu), the number of cycles per second. The velocity, ., is constant (speed of light in a vacuum = 2.998 × 10. m s.), and is the product of the wavelength times the frequency:
39#
發(fā)表于 2025-3-28 08:17:54 | 只看該作者
Orientation in time: photoperiodism,induce sequences of development or patterns of behaviour which prepare the organism for future conditions. This applies both to daily and to seasonal cycles of change: plants seem to have both a clock and a calendar. Light is strongly involved in each of these aspects of time measurement.
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