New use of sodium hydrosulfide for promoting wheat seeds sprouting under heavy metal stress

Abstract

The invention discloses a new application of sodium hydrosulfide for promoting germination of wheat seeds under the stress of heavy metals, namely, the application is that the sodium hydrosulfide is taken as a sprout-promoting agent of germination in the soil polluted by heavy metals of Al<3+>, Cd<2+>, Cr<3+>, Cr<6+>, Pb<2+>, Hg<2> and the like. The invention can effectively improve the germinability of the wheat seeds under the stress of heavy metals, and induces the seeds to germinate fast and regularly. Research proves that the sodium hydrosulfide of the hydrogen sulfide donor is adopted to preprocess the wheat seeds, which can remarkably induce the activity expression of hydrolytic enzyme of amylase, protease, lipase and the like, in the seeds, enhances the oxygenolysis of storage matter, relieves the oxidative damage caused by the stress of the heavy metals in the seeds and maintains the lower membrane lipid overoxidation level in the seeds and the seedlings, thus being beneficial to the normal growth of embryo and radicle. The invention solves the key problem of restoring the production of the wheat in the areas polluted by heavy metals, has simple operation; the needed reagent is single and is easy to be obtained.

Description

1. Technical field [0001] The present invention relates to a new application of a known compound, in particular to a new application of sodium hydrosulfide (NaHS) for improving germination of wheat seeds under heavy metal stress. 2. Background technology [0002] In recent years, the massive discharge of industrial wastes, the excessive development and utilization of mineral resources, and the extensive use of various pesticides and fertilizers in agricultural production have led to the gradual expansion of the land area polluted by heavy metals. Heavy metal pollution is an important aspect of soil pollution, which directly affects the production of crops, and countries all over the world attach great importance to it. The independent life of the next generation of plants usually begins with seed germination, which is restricted by external environmental factors, including light, temperature, water, oxygen, and soil factors. Wheat is an important food crop with a large sowi...

AI Technical Summary

Problems solved by technology

In plants, about H 2 S as a signaling molecule to regulate plant physiological responses has not been reported