Chinese yew tree high position grafting method

Abstract

The invention discloses a Chinese yew tree high position grafting method, belonging to the forest tree breeding technology field. The Chinese yew belongs to the dioecism plant. The Chinese yew tree high position grafting method comprises steps of adopting a flowered male plant as a stock, snipping a branch of a flowered and fruited fine female plant as a scion, performing cut-grafting and canopy replacement on a main branch on an upper part of a rootstock tree to change an original breed, which is also called breed changing, and maintaining one to three rootstock top shoots as pollination branches. Compared with the prior art, the Chinese yew tree high position grafting method adopts the branch of the fruited Chinese yew fine female tree to graft on the upper part of the flowered male plant to realize high position grafting and breed changing; the grafting living rate achieves more than 90%; the grafted Chinese yew fruits next year and enters a fruit high yield period in a third year; and each plat can produce fresh fruits more than 20 kilo. The Chinese yew tree high position grafting method solves a problem that a male tree and a female tree are different plants, realizes a monoecious plant and can maintain good characters of the female tree; three years later, the grafted tree begins producing a large quantity of fruits after grafting, six years earlier than the seedling Chinese yews, which improves multiple times of the production.

Description

technical field [0001] The invention relates to the field of tree propagation, in particular to a method for high-position grafting of yew trees. Background technique [0002] Taxus chinenwsisvar.maireiChengetL.K belongs to Taxus genus Taxus, a national first-class key protected wild plant, dioecious, rare monoecious; beautiful tree shape, full of fruit when the seeds mature, red outside and bright inside , has the functions of greening, beautifying, and purifying the environment, with strong ornamental value, high medicinal value, good economic benefits, and broad application prospects; the propagation methods of yew trees mainly include seed propagation, cutting propagation and grafting propagation. Among them, seed propagation belongs to Sexual reproduction, cuttings and grafting are asexual reproduction. At present, seeds are mostly used in production. Yew seeds have a dormant period of about 18 months, that is, seeds collected in October of that year need to be stored ...

AI Technical Summary

Problems solved by technology

At present, seeds are mostly used in production. Yew seeds have a dormant period of about 18 months, that is, seeds collected in October of that year need to be stored until the spring of the third year to germinate normally. To distinguish between male and female plants, it usually takes 8-10 years before flowering and fruiting can be done to distinguish between male and female plants, and it is prone to variation, and it is difficult to retain the excellent characteristics of its female parent

Although cutting propagation can maintain the excellent characteristics of the female parent, it cannot solve the problem of dioecious plants, and cannot achieve the goal of fruiting every plant. The cutting seedlings grow slowly, and large trees cannot be formed in a short period of time. In actual production, a large number of cuttings are needed, and the cost is relatively high. high

The ordinary grafting and propagation method of yew uses yew seedlings as rootstocks, and the grafted part is generally less than 1 meter. The yew seedlings cannot distinguish between male plants and female plants. There is blindness, and the uncertainty of the results of each plant increases significantly. If the rootstock is The female plant, the spike is the branch of the female plant, and it is still a female plant after grafting, and the single plant cannot bear fruit. If the rootstock is a male plant, and the spike is a male plant branch, it is still a male plant after grafting, and the single plant cannot bear fruit.