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Effects of ethylene on the growth and development of radish

机译:乙烯对萝卜生长和发展的影响

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The objective of this research is to determine the effects of ethylene on the growth and development of Raphanus sativus L. cv. Cherry Belle. Radishes are a salad type crop that have a short planting and harvest cycle, which is ideal as a dietary supplement for crews on short to medium duration space missions. Besides these dietary attributes, radish can serve as a model system for evaluating the effects of environmental conditions in closed chambers. By studying their physiological responses in such conditions, it will help us to understand the growth of these plants and to determine whether the physiological effects occur independently from a microgravity environment. Cherry Belle radish was chosen as the cultivar model for the RASTA (Radish Assimilation in Spaceflight Testbed Atmospheres) experiment to evaluate the effect of microgravity on carbohydrate partitioning to the root. Ethylene is a volatile plant hormone that could accumulate in a closed environment and induce negative effects on plant growth. Growth and development of radishes is adversely affected by the chronic exposure to low concentrations of ethylene and a series of experiments were initiated to determine the effects of ethylene exposure on radish plants. Chronic exposure toethylene in the range of 30 ppb tol ppm results in increasing severe symptoms, including thickening of the stem, leaf epinasty, and leaf curling.
机译:该研究的目的是确定乙烯对Raphanus Sativus L.CV的生长和发育的影响。樱桃贝尔。萝卜是一种沙拉型作物,具有较短的种植和收获循环,其理想的是短到中等持续时间空间任务的船员的膳食补充剂。除了这些饮食属性外,萝卜可以用作评估闭腔室内环境条件影响的模型系统。通过在这种情况下研究其生理反应,它将有助于我们了解这些植物的生长,并确定生理效果是否与微匍匐环境不同。选择樱桃百叶萝卜作为兰塔的品种模型(萝卜散射在太空飞行的氛围中的氛围)实验,评价微匍匐对根系碳水化合物分区的影响。乙烯是一种挥发性植物激素,可以在封闭的环境中积聚并诱导对植物生长的负面影响。萝卜的生长和发展受到慢性暴露于低浓度的乙烯的影响,并开始了一系列实验,以确定乙烯暴露对萝卜植物的影响。慢性暴露在30ppb的甲乙烯范围内的甲乙烯导致严重的症状增加,包括茎,叶片曲线和叶卷曲的增厚。

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