Method for increasing grafting propagation survival rate of pinus bungeana variations

A white bark pine, grafting technology, applied in grafting, botanical equipment and methods, horticulture and other directions, can solve the problems of high rootstock requirements, low graft survival rate, etc., to maintain stability and consistency, strong affinity, and fast growth. Effect

Inactive Publication Date: 2016-08-17
INST OF FORESTRY CHINESE ACAD OF FORESTRY
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Problems solved by technology

The problem of the usual grafting method is that the survival rate of grafting is generally low, and the requirements for weather and root

Method used

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  • Method for increasing grafting propagation survival rate of pinus bungeana variations
  • Method for increasing grafting propagation survival rate of pinus bungeana variations
  • Method for increasing grafting propagation survival rate of pinus bungeana variations

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Example Embodiment

[0034] Example 1. Method of grafting white bark pine

[0035] 1. Grafting time: Spring (February to March), the outdoor temperature is -20℃ to 15℃, and the temperature inside the greenhouse is 5℃ to 30℃.

[0036] Grafting rootstock: large seedlings or small trees of white bark pine or Chinese pine above 1m in height.

[0037] Grafted scion: the individual shoots of 1 year old pots of white bark pine and white bark pine, about 0.3-0.5 cm in diameter.

[0038] 2. Grafting method

[0039] (1) It should be carried out in a greenhouse from mid-February to late March. The minimum temperature in the greenhouse should be kept above 5℃, preferably 15-25℃.

[0040] (2) Transplant the grafted rootstocks in the greenhouse, and water the rootstock seedlings once 2-5 days before grafting to ensure sufficient water.

[0041] (3) 1-2 days before grafting, water the greenhouse nursery of the grafted rootstocks. On the day of grafting, spray water around the greenhouse repeatedly to increase the air humidi...

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Abstract

The invention discloses a method for increasing a grafting propagation survival rate of pinus bungeana variations. The method includes: grafting a scion to a rootstock according to a high-position inarching method to complete grafting and obtain a grafted plant, wherein the scion refers to a pinus bungeana variation or pinus bungeana, the pinus bungeana variation refers to Penxian pinus bungeana, and the rootstock refers to pinus tabuliformis or pinus bungeana. A process of grafting the scion to the rootstock according to the high-position inarching method includes: cutting the scion to obtain the scion with a cut, and cutting the rootstock at a position 2-5cm below a terminal bud of an upper branch or a main branch of the rootstock to obtain the rootstock with a cut; jointing the scion with the cut and the rootstock with the cut to finish grafting. The survival rate of pinus bungeana grafted according to the method is about 90% generally, and high affinity and quickness in growth are realized. In addition, the method can be applied to breeding of new pinus bungeana varieties, establishment of pinus bungeana genetic resource clone collection nurseries and breeding of pinus bungeana clones in production.

Description

technical field [0001] The invention relates to a method for improving the survival rate of grafted and propagated variant types of white bark pine. Background technique [0002] White bark pine is the only three-needled pine in North China. Its crown is full and colorful, its trunk is tall and straight and green, and its bark is mottled like a dragon. It is commonly known as "emperor tree". It is a very good garden landscape tree species in northern my country. However, the growth of Pine pine seedlings is slow during the seedling period (3-5cm in 1 year and about 1m in 10 years), which limits its rapid growth and development. In particular, in recent years, researchers have discovered a variant type of white bark pine - short-branched white bark pine, named "Penxian white bark pine". After more than ten years of observation, "Penxian white bark pine" has not seen flowering and fruiting so far. At present, it can only be propagated through asexual methods. The method of v...

Claims

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Application Information

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IPC IPC(8): A01G1/06A01G17/00
CPCA01G17/005A01G2/30
Inventor 李斌刘建明郑勇奇林富荣
Owner INST OF FORESTRY CHINESE ACAD OF FORESTRY
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