Method for releasing dormancy of oil-used peony seeds

Abstract

The invention discloses a method for releasing dormancy of oil-used peony seeds. The method comprises the following steps: a quick post-maturation stage of seed embryos of the oil-used peony seeds: harvesting peony pods, spreading the peony pods in shade indoors, and overturning up and down once very day; after the pods crack naturally, screening and collecting shed seeds; performing stratification treatment after full seeds which submerge in water are dried in shade indoors for 1 to 2 days; adding fresh river sand which contains 50 to 60 mass percent of water in the screened seeds, and spreading a mixture indoors for drying; keeping internal temperature and humidity of a mixture of the seeds and the river sand, and treating for 30 days to obtain the mixture of the seeds with the seed embryos which are completely matured and the river sand; a hypocotyledonary axis dormancy releasing stage of the oil-used peony seeds: controlling the indoor temperature of the mixture of the seeds and the river sand to be between 15 and 20 DEG C, keeping the humidity of the river sand, and treating for 30 days to obtain a mixture of the seeds of which the root length is greater than 4 centimetres and the river sand; an epicotyl dormancy releasing stage of the oil-used peony seeds: controlling the indoor temperature of the mixture of the seeds of which the root length is greater than 4 centimetres and the river sand to be below 10 DEG C; spraying a plant growth conditioning agent; keeping the river sand at a certain humidity; treating for 30 days; completing a dormancy releasing process of the oil-used peony seeds.

Description

technical field [0001] The invention belongs to the technical field of releasing dormancy of seeds, and relates to a method for releasing dormancy of peony seeds for oil. Background technique [0002] Peony, belonging to the Paeoniaceae (Paeoniaceae) Paeonia (Paeonia) peony group (Sect. Moutan DC.), is a traditional famous flower in China, known as the "king of flowers" and "national beauty and heavenly fragrance". my country is the center of origin and distribution of peonies in the world, and all 9 species of this group are produced in China. As a medicinal plant, peony has been cultivated in my country for 2000 years; as an ornamental plant, peony has been cultivated in my country for 1600 years. [0003] In recent years, it has been found that the content of unsaturated fatty acids in peony seed oil exceeds 90%, at the same time, the content of a-linolenic acid is as high as 40%. In 2011, peony seed oil was approved as "new resource food" by the Ministry of Health of m...

AI Technical Summary

Problems solved by technology

However, peony seeds have strong dormancy characteristics. Under natural conditions, peony seeds can only germinate in the spring of the next year or the third year after sowing. This dormancy characteristic of peony seeds will seriously restrict the production of oil peony seedlings, thereby affecting Rapid Development of Peony Industry for Oil

Although there are some researches on the method of breaking the dormancy of peony seeds, the conclusions of different researchers are quite different

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