中心加速度对植物生长的影响

Andrea Gomez-Leyva, Gabriela Del Valle-Díaz, Damián Muciño-Cruz, R. Espíndola-Heredia
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引用次数: 0

摘要

2013年,美国宇航局进行了一系列实验,研究植物在微重力下的生长情况。重复实验的目的是研究加速与植物生长的关系,这是通过加速度计的构建和不同植物在一定条件下的发芽来实现的。本文介绍了不同重力值对植物生长的影响。为了做出改变,考虑了中心加速度(向心加速度)的基本概念,在离心机的帮助下,模拟了任何重力值,为此,有必要将种子放置在离旋转轴不同距离的地方,该旋转轴连续旋转数天。考虑了两种不同的系统:a)垂直放置旋转轴,将观察植物在几天内的生长情况,以及对生长素的影响,生长素负责向地性,也就是说,从放置在离心机中的植物中提取生长素将决定旋转对生长素浓度的影响;b)重力方向的生长受距离旋转轴中心的距离的影响。我们还比较了植物的自然生长和受中心力影响的生长。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of central acceleration on the growth of a plant
In 2013, NASA conducted a series of experiments to study the growth of plants in microgravity. The interest of replicating the experiment is to study the relation of acceleration with plant growth, which is achieved by the construction of an accelerometer and the germination of different plants under certain conditions. In this paper we present the effects of different gravity values on the growth of a plant. To make the changes, the basic concepts of central acceleration (centripetal acceleration) are considered, with the help of a centrifuge any gravity value is simulated, for this, it is necessary to place the seeds at different distances from a rotation axis which is rotated continuously for several days. Two different systems were considered: a) placing the axis of rotation vertically, with this, the growth of the plants over the course of days will be observed, along with the effects on the auxins, which are responsible for geotropism, that is, the extraction of auxins from the plants placed in the centrifuge will determine the influence of rotation on the concentration of auxins; and b) the growth in the direction of gravity is affected according to the distance taken from the center of the axis of rotation. We also compare the natural growth of plants and the growth affected by the central force.
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