Excellent hybrid varieties of Taxus mairei
1. Twenty thousand 3-year-old seedlings of Taxus mairei were introduced from Canada, which were mainly used in large-scale production of paclitaxel. The growth of Taxus in China is slow, the content of taxol is relatively low, and it is listed as a national first-class protected plant as a rare tree species. The taxol content in the branches and leaves of Taxus mairei is about 0.02%, and the content in the bark is 0.03%-0.04%, which is 2-3 times of the 60-year-old bark of Taxus mairei, and the growth rate is 3 times that of Taxus mairei. It has the characteristics of inconspicuous trunk, dense branches and leaves, strong germination and suitable for shrub cultivation.
two。 The propagation, cultivation and management, pest control techniques, drugs and equipment of Taxus mairei were introduced.
3. The method of seedling breeding based on cutting is introduced, with emphasis on the selection and use of growth hormone.
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Introduction to Encyclopedia of seedlings-- Taxus cuspidata
Latin name: Taxuscuspidata plant name: northeast yew scientific name: taxuscuspidatesiebebzucc alias: yew, red cypress pine, purple cypress pine, broad-leaf yew, rice tree and other family names: Taxus family Latin name: Taxaceae genus: Taxus mairei is one of the four species and 1 variety of Taxus in China, and the other 3 species and 1 variety are Taxus yunnanensis, Xizang Taxus, Taxus mairei, Taxus chinensis, and Southern Red Bean.
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Rapid propagation of Taxus mairei
Because it contains extractable anti-cancer drugs, Taxus mairei has become an important medicinal material in the country. The demand for seedlings is increasing. It is difficult to meet the needs of production by traditional cutting propagation alone. Generally, only one batch can be cultivated in a year, while at least 5-6 batches can be cultivated by using non-test-tube cloning technology, and the survival rate and the quality of seedlings are greatly improved. What is more important is that the fast-growing seedlings can be transplanted, planted and developed throughout the year. Generally, 3-5 cm long leafy branches are used as in vitro materials.
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