Wild population restoration method of rheum nobile

Abstract

The invention belongs to the technical field of biology, and particularly relates to a wild population restoration method of an endangered rheum plant - rheum nobile which has the ornamental value andmedical value. The method comprises the following steps: performing the manual cross-pollination to increase the seed yield and overcome the limitation of seed insufficiency caused by the biting andeating of a large number of seeds by insects under a natural pollination condition, scientifically detecting a development situation of the seeds by using a digital X-ray sample imaging system to improve the quality of the to-be-planted seeds, selecting or creating an appropriate seeding land to increase the emergence rate, and scientifically managing at the seedling period to increase the survival rate of seedlings. The invention relates to the rheum nobile wild population restoration technology which is simple in operation, convenient and easy, convenient in management and capable of savingworkers and manpower, thereby providing technical support for the protection and sustainable utilization of Tibet medicine plant resources.

Description

Technical field: [0001] The invention belongs to the field of biotechnology, and specifically relates to a plant seedling breeding method, and more specifically, relates to a wild population recovery method of an endangered rhubarb plant with great ornamental value and medicinal value - Tahuang. Background technique: [0002] Tahuang (Rheum nobile) is a plant of the genus Rhubarb in the Polygonaceae family. When it blooms, it will develop into large and gorgeous milky-yellow bracts that overlap and wrap the entire flower head, reaching a height of 1.5-2.0m, resembling a pagoda. It is of great ornamental value and is a "star plant" in the alpine periglacial zone of the Himalayas-Hengduan Mountains; at the same time, the rhizome of this plant is used as medicine, which has the effects of purging heat, guiding stagnation, dissipating blood stasis and reducing swelling, and is of great medicinal value. Tibetan medicinal plants, therefore, have received much attention from botani...

AI Technical Summary

Problems solved by technology

In the context of global warming and intensified human activities, the plant is under great threat, mainly in the following aspects: First, Tahuang relies on a seed-eating fungus mosquito for its pollination, up to 30% under natural conditions The left and right seeds were gnawed, which caused the population update to be limited by the insufficient number of seeds; second, the seeds of Tahuang were heavy (30 mg) and wrapped by bracts, which limited the long-distance diffusion of seeds, and most of the seeds fell in the distance Within 50cm of the mother plant, most seedlings cannot survive due to the density effect; third, global warming is causing low-altitude vegetation to migrate to high altitudes, occupying the most suitable bare habitat for the growth of Tahuang, and the population maintenance is threatened by habitat loss; Fourth, the environment in the alpine periglacial belt is harsh, and strong radiation, heavy rainfall, strong winds and hail are fatal threats to the newly unearthed seedlings; fifth, Tahuang has a long growth cycle, and it takes about 15 to 45 years of vegetative growth to grow. Blooms, then dies; finally, tourists collecting blooming individuals and local Tibetans digging medicinal materials exacerbated the decline of the Tahuang population

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