Light within the plant
Light within the plant
复制标题
植物内的光
DOI：
10.1007/978-94-011-1884-2_18
复制
发表时间：
1994
期刊：
影响因子：
3.4
通讯作者：
T. Vogelmann
中科院分区：
文献类型：
--
作者：
T. Vogelmann
要了解植物如何检测其光环境以及它们如何感知光方向、光量和光谱质量，必须对植物的光学特性有详细的了解。然而，光进入植物组织后发生了什么的详细描述由于一些光学现象而变得复杂，如透镜效应、光散射和筛子效应。光散射与内部反射结合在一起，形成了一个光陷阱，使得植物内部的通量速率可以超过入射光的3-4倍。当光被吸收和散射衰减时，内部注量率会随着组织内深度的增加而变化。这产生了光的渐变，这是在向光性中感知光方向所必需的。感知光的其他机制可能依赖于其他光学效应。
A detailed knowledge of the optical properties of plants is necessary to understand how plants detect their light environment and how they may perceive light direction, light quantity, and spectral quality. However, a detailed description of what happens to light after it enters plant tissues is complicated by a number of optical phenomena such as lens effects, light scattering, and the sieve effect. Light scattering, in combination with internal reflection, creates a light trap so that fluence rates within plants can exceed by 3–4 times that of incident light. Internal fluence rates change with increasing depth within the tissues as the light is attenuated by absorption and scattering. This creates a light gradient which is necessary for the perception of light direction in phototropism. Other mechanisms for perception of light may depend upon other optical effects.