Seedling breeding method capable of increasing grafting survival rate of phoebe bournei

Abstract

The invention discloses a seedling breeding method capable of increasing the grafting survival rate of phoebe bournei. The seedling breeding method comprises the processes of breeding rootstocks, selecting scion-seed trees, selecting scions, storing cuttings, grafting and carrying out post-grafting management; according to the method, tissue cultured seedlings, cultured for 6-8 months, of the phoebe bournei are used as the rootstocks, and fresh coppice shoots extracted from the scion-seed trees in season are collected as the scions; before and after the beginning of spring, grafting is carriedout by using a single-bud cut-grafting method when winter buds of the phoebe bournei are not unfolded yet, and the grafted rootstocks are transplanted into a nursery for carrying out post-grafting management, so that complete new plants are obtained. The selected rootstocks for grafting is the tissue cultured seedlings of the phoebe bournei, and the single-bud cut-grafting method is used for grafting, so that the quality of the rootstock root system is good, the survival rate is high, the grafted seedlings grow rapidly, and the seedling breeding time is shortened; the grafted seedlings are used for establishing a fine cloned seed orchard, so that a large number of high-quality phoebe bournei seeds are produced, the problem of limited fruit yield of the good single plant is solved, and a foundation is laid for the cultivation of high-quality nursery stock and the construction of high-quality man-made forests; the seedling breeding method has better good economic benefit, environmentalbenefit and ecological benefit.

Description

technical field [0001] The invention belongs to the technical field of forestry plant cultivation, and relates to the cultivating technology of Nannan seedlings, in particular to a seedling raising method of Nannan grafting. Background technique [0002] Fujian Nan ( Phoebe bournei ) is an evergreen tree of the family Lauraceae, which is a unique tree species in China and a national second-class wild protected plant. Its trunk is tall and straight, its wood texture is beautiful, its aroma is resistant to decay, and it is a precious material for high-grade buildings, furniture, carvings and precision wood models. [0003] At present, the seedlings of Nannan are generally used for afforestation, but the natural forest of Nannan takes more than 10 years to bloom and bear fruit, and its fruiting has obvious phenomenon of large and small years, and small years often do not bear fruit or rarely bear fruit. And for a long time, people's over-harvesting and utilization of Minnan i...

AI Technical Summary

Problems solved by technology

The conventional grafting method generally uses the seedlings of Phoebe nanne as rootstock, and adopts the traditional cutting method and bud grafting method for grafting. The survival rate is about 30%, and the survival rate is low; Usually when the growth of seedlings reaches the requirement of grafting, the best time for grafting has been missed