Growth acceleration of plants by UV-C rays irradiation for he comming global warming

应对全球变暖，UV-C射线照射加速植物生长

基本信息

批准号：
04454103
负责人：
SUZUKI Yoshinori
金额：
$ 3.9万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1993
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04454103/
关键词：
Disolved oxygen Global warming Growth acceleration Growth inhibition Logistic theory Photosynthetic rate UV-C ray 紫外線(UV‐C Ray)高温抵抗性光合成紫外線農作物 UV-C

项目摘要

We irradiated UV-C rays on plant seedlings of vegetable under same intensity (23 muW), changing duration from 0 to 150 minutes, just before transplant. Plants grew much more at about 30 minutes of irradiation, and less under longer irradiation, that is, plant growth were effected in both ways of acceleration and inhibition depending on duration of irradiation of UV-C rays.We considered this phenomena from point of view of the logistic theory for plant growth, and made clear the mechanism the optimum factor, one of the action form of environment elements. This means that there is the most favorable value of irradiation time for plant growth, which accelerate growth much more than the normal. Such result was appeared in two weeks after UV-C rays irradiation.As the key point of acceleration of growth, there was the inhibition of growth to leaves in every treatments during about one week after irradiation, and activity in roots was increased in the same time. We confirmed it by the hydroponic cultivation, that is, the comsumption rate of disolved oxygen increased quite large in the same duration of inhibition of leaves.Though measurements of photosynthetic rate, transpiration rate and stomata conductance, water use efficiency (= photosynthetic rate/transpiration rate) were changed greatly by UV-C rays irradiation from low in the first one week to high in the next 2-3 weeks, comparing to the non-treated vegetable.By the experiments on the effect of air temperature on growth of irradiated seedlings in summer and wingter, it was made clear that the duration of inhibition was shorter in high temperature than in lower temperature, and the degree accelerated growth in the field was higher in summer, This means that such method using UV-C rays to plant seedlings may be one of favorable methods for taking measurement against comming global warming.

我们在相同强度（23 MUW）的植物植物幼苗上照射了UV-C射线，在移植前的时间从0到150分钟。植物在辐照约30分钟时生长得多，而在更长的辐射下，植物的生长较少，也就是说，根据UV-C射线照射的持续时间，植物的生长在加速和抑制方面都受到影响。我们从观点考虑了这种现象植物生长的逻辑理论，并阐明了该机制的最佳因素，这是环境元素的作用形式之一。这意味着植物生长的辐射时间最有利的价值，这比正常生长的速度要高得多。这种结果在UV-C射线照射后的两周内出现。随着增长的关键点，在辐照后大约一周内，每种处理中都有生长抑制生长的叶子，并且根部的活性在相同的情况下增加时间。我们通过水培培养证实了这一点，即，在相同的抑制叶子的持续时间内，溶解氧气的摄取速率增加了很大。与未经处理的蔬菜相比，UV-C射线照射从最初的一周到接下来的2-3周都大大改变了。在夏季和Wingter中，很明显，在高温下抑制持续时间比较低的温度短，并且该野外的程度在夏季加速增长较高，这意味着使用UV-C射线来种植幼苗的这种方法可能是对全球变暖进行测量的有利方法之一。