In recent years, people have gradually discovered that sulfur dioxide, ozone, and hydrogen fluoride in the atmosphere will affect normal physiological metabolic activities of plants, and have affected their photosynthetic or respiration before the appearance of plant damage symptoms. Therefore, measuring changes in photosynthetic or respiratory activity of plants can be used as a physiological indicator of the effects of atmospheric pollutants on plants. Respiration for plants can be measured and analyzed using a plant respirator. Add WeChat more and more professional just waiting for you to come: Air conditioning accessories Air Conditioning Accessories,Refrigeration Parts,Copper Centrifugal Filter,Valve Core Remover Taizhou Tentcool Trade Co., Ltd. , https://www.tentcoolcompressor.com
The shoots with leaves were removed from the grown adult plants and inserted into a container filled with water and divided into two groups. One group was used as a control. The other group was placed in an i-cubic plexiglass enclosure. Chlorine produced by the reaction of hydrochloric acid with potassium permanganate was subjected to static fumigation for 2 hours in the room (the initial chlorine in the hood was started at the start of the fumigation process). The concentration is about 28~3ppm, and the concentration drops rapidly due to the adsorption of the inner surface of the hood and the absorption of the plant leaves.
The determination of the plant respiration tester found that the sensitivity of sensitive plants increased greatly. For example, cedar and other plants could be more than doubled in this experiment. Middle-resistance plants like privet, melon seedlings, oriental arborvitae, etc. breathe after the end of smoke. The strength increased by about 20 to 60%; the respiratory intensity of the strong resistant plant, Cymbidium, only increased slightly. The decrease in respiratory intensity after the coral trees have been smoked may be related to a significant reduction in physiological activity caused by severe leaf injury.
The phytorespiratory tester measured the respiration of leaves of different ages in the plant and found that the young leaves had relatively high respiratory intensity, followed by functional leaves and old leaves. However, after the treatment with chlorine, it was found that the greatest changes in the intensity of respiration were generally old leaves. This also indicates from the negative side that the respiration of old leaves is most affected by chlorine. 