Method for improving drought resistance of marigold by using melatonin

Abstract

The invention belongs to the technical field of herbaceous plant cultivation, and discloses a method for improving the drought resistance of marigold by melatonin, which comprises the following steps: selecting marigold seeds, selecting growing seedlings with consistent growth vigor when 7-8 true leaves exist after sowing, transplanting the growing seedlings into a nutrition pot, putting the nutrition pot into an illumination incubator for culture, and performing the test in the growth period of marigold; the transplanted marigold is divided into five treatment groups, and 30 growing seedlings are treated for each treatment group; after grouping is completed, melatonin is treated by adopting a leaf spraying method until water drops fall on the front and back surfaces of leaves; drought stress starts to be carried out one week after transplanting, the stress treatment cycle is four 20 days in total, melatonin is sprayed once in the morning and evening every day in the first three days in each week, sampling starts to be carried out after the next day, various indexes are measured, and each treatment is repeated for three times. The melatonin has a relieving effect on drought stress of the marigold and can improve the activity of antioxidant enzyme, adjust accumulation of osmotic substances and enhance the drought resistance of the marigold.

Description

technical field [0001] The invention belongs to the technical field of herbaceous plant cultivation, and in particular relates to a method for improving drought resistance of marigolds by using melatonin. Background technique [0002] At present, marigold is an annual herbaceous plant belonging to the genus Marigold of Asteraceae, which has important ornamental and economic value. In arid and water-scarce areas, there are few flower sea landscapes with high ornamental value. Abiotic stresses such as drought or water shortage are the most important factors affecting plant growth, production and various physiological processes. Therefore, improving the drought resistance of flower sea flowers becomes very important. Marigold has bright colors, easy cultivation and management, strong adaptability, and no strict requirements on soil, so it can be used as stress research materials. In recent years, plant drought stress has gradually entered the research field of more scholars. ...

AI Technical Summary

Problems solved by technology

[0004] Through the above analysis, the problems and defects in the prior art are: most of the research on marigold in the prior art is in pigment extraction, cultivation technology, industrial development, and antibacterial effect, and its research on drought stress is less. Research on Melatonin in Drought Stress

Images