Research of influence of heavy-metal cadmium stress on murraya paniculata

Abstract

The invention discloses a research of influence of heavy-metal cadmium stress on murraya paniculata, and relates to the technical field of heavy metal technical research. The research comprises the following steps of experiment material preparation, experiment methods determination, data processing, result analysis and conclusion research. Murraya paniculata under cadmium stress is free of death or poison and exhibits strong vitality, and antioxidase in vivo is induced to eliminate the damage of generated active oxygen to cell membranes, so that plant cells are protected from stress. Various chlorophyll fluorescence parameters also reflect that the murraya paniculata are not subjected to large cadmium stress, and photosynthesis can be normally carried out. When the content of cadmium in the murraya paniculata is measured, cadmium with certain accumulation amounts is contained in roots, stems and leaves, but the accumulation amounts do not reach a standard of cadmium-hyperenrichment plants, and the murraya paniculata do not belong to cadmium-hyperenrichment plants. Consequently, murraya paniculata can normally grow under cadmium stress, active oxygen can be normally removed by the antioxidase in the murraya paniculata, photosynthesis is not influenced, a certain extraction and enrichment capability on cadmium in soil is achieved, and the murraya paniculata has relatively strongtolerance.

Description

technical field [0001] The invention relates to the technical field of heavy metal technology research, in particular to a study on the influence of heavy metal cadmium stress on the characteristics of Qilixiang. Background technique [0002] While promoting the process of human civilization, industrial technology has also brought a lot of environmental pollution to humans, among which heavy metal pollution is the most prominent, and cadmium pollution is the most serious of heavy metal pollution. In the "National Soil Pollution Survey Bulletin" published in 2014, the rate of cadmium pollution in my country's land exceeded the standard by 7.0%, which was higher than most inorganic pollutants. The polluted area covered most of the land in my country, and this area is increasing year by year. rise. [0003] Cadmium is a non-essential element in the process of plant growth. It has the characteristics of strong toxicity, not easy to be degraded in soil, and easily absorbed by pla...

AI Technical Summary

Problems solved by technology

According to reports, plants with hyperaccumulation or tolerance to cadmium are mostly concentrated in Compositae, Poaceae, Brassicaceae, Cyperaceae and Crassulaceae, such as nightshade, Indian mustard, Baoshan Viol

Images