Composition for improving cadmium tolerance of kenaf in seedling stage

Abstract

The invention provides a composition for improving cadmium tolerance of kenaf in a seedling stage, belonging to the field of plant cultivation. The kenaf has the characteristics of short growth cycle, high biomass (three to four times that of trees), strong heavy metal tolerance, wide applicability and the like, the kenaf is fiber crop, and heavy metal is hardly taken into a food chain, so that the kenaf is hopeful to be used for treating large-area heavy metal-polluted soil, soil pollution can be treated, and higher economic benefit also can be obtained. The invention aims at improving tolerance of the kenaf in the seedling stage to soil cadmium stress, and the composition for improving the cadmium tolerance of the kenaf in the seedling stage is provided for achieving the aim.

Description

technical field [0001] The invention belongs to the field of plant cultivation, and in particular relates to a composition for improving the cadmium-resistant performance of kenaf seedlings. Background technique [0002] Kenaf has the characteristics of short growth cycle, large biomass (three to four times that of trees), strong resistance to heavy metals, and wide adaptability. Because it is a fiber crop, it is not easy to bring heavy metals into the food chain. Therefore, kenaf is expected to be used to treat large areas of soil polluted by heavy metals, not only to control soil pollution, but also to obtain higher economic benefits. Qi Jianmin and others studied the absorption characteristics of kenaf to heavy metals, screened out kenaf varieties with high tolerance and high cadmium enrichment, studied the absorption and accumulation characteristics of kenaf to heavy metal cadmium and the differences between varieties; compared the high tolerance varieties Differences i...

AI Technical Summary

Problems solved by technology

[0004] Although the cadmium-resistant characteristics of kenaf have been widely recognized, it has not been widely planted as a restoration plant. The inventors have found through in-depth research that there is still room for improvement in the potential of kenaf roots to absorb heavy metal cadmium in soil. Phytoremediation The key part of the root system is the root system, Cd enters the root tip as a symplast and deposits in the epidermal cells, and then transports to other parts through the root system

The main reason why kenaf is superior to other economic crops is the well-developed root system. In order to enhance the absorption capacity of kenaf to the heavy metal Cd, the inventor has made various attempts, such as extending the length of the main root of kenaf, increasing the number of fibrous roots, etc., but with little effect , how to stimulate kenaf to absorb soil heavy metal Cd is the key link in the development of kenaf to become a heavy metal soil restoration crop