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Cutting and breeding method for tree stocks of Populus tremula * P.tremuloides

A technology of aspen and hybrid, applied in the field of poplar clonal propagation, can solve the problems of difficult rooting, low survival rate, restriction of large-scale promotion of aspen hybrids in Europe and America, etc., and achieves short emergence time, low reproduction cost, and easy to master. Effect

Inactive Publication Date: 2010-09-22
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, European and American aspen hybrids belong to tree species that are difficult to take root from cuttings, and the survival rate of cutting propagation is low, which greatly limits the large-scale promotion of European and American aspen hybrids. Therefore, a kind of European and American aspen hybrid seedlings with high survival rate and low cost is provided. Cutting propagation method has important practical significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. In early and mid-March of that year, it was carried out at the Forest Genetics and Breeding Base of Northeast Forestry University. Cut young shoots of European and American aspen hybrids in the same year as cuttings, cut cuttings, each branch is 3-5cm long, and keep a single node and a single leaf. Branches with a higher degree of lignification at the base and too tender parts at the top are not used.

[0033] 2. Immerse the lower end of the cuttings in NAA 100ppm solution for 30 minutes, then take it out.

[0034] 3. The upper layer of the cutting substrate is about 8 cm of river sand, and the lower layer is covered with about 3 cm of peat soil for water retention. Water the cutting bed thoroughly with clean water before cutting.

[0035] 4. Cutting adopts the oblique cutting method, the cutting depth is 1 / 3~2 / 5 of the cuttings, and one bud is left. Each cutting bed has 10 rows of cuttings, and each row has 10 plants. The spacing between plants is 2.0~2.5cm, and t...

Embodiment 2

[0038] 1. In the middle and late April of that year, it was implemented at the Forest Genetics and Breeding Base of Northeast Forestry University. Cut young shoots of European and American aspen hybrids in the same year as cuttings, cut cuttings, each branch is 3-5cm long, and keep a single node and a single leaf. Branches with a higher degree of lignification at the base and too tender parts at the top are not used.

[0039] 2. Immerse the lower end of the cuttings in NAA 100ppm solution for 30 minutes, then take it out.

[0040] 3. The upper layer of the cutting substrate is about 8 cm of river sand, and the lower layer is covered with about 3 cm of peat soil for water retention. Water the cutting bed thoroughly with clean water before cutting.

[0041] 4. Cutting adopts the oblique cutting method, the cutting depth is 1 / 3~2 / 5 of the cuttings, and one bud is left. Each cutting bed has 10 rows of cuttings, and each row has 10 plants. The spacing between plants is 2.0~2.5cm,...

Embodiment 3

[0044] 1. In the middle and late May of that year, it was implemented at the Forest Genetics and Breeding Base of Northeast Forestry University. Cut young shoots of European and American aspen hybrids in the same year as cuttings, cut cuttings, each branch is 3-5cm long, and keep a single node and a single leaf. Branches with a higher degree of lignification at the base and too tender parts at the top are not used.

[0045] 2. Immerse the lower end of the cuttings in NAA 100ppm solution for 30 minutes, then take it out.

[0046] 3. The upper layer of the cutting substrate is about 8 cm of river sand, and the lower layer is covered with about 3 cm of peat soil for water retention. Water the cutting bed thoroughly with clean water before cutting.

[0047] 4. Cutting adopts the oblique cutting method, the cutting depth is 1 / 3~2 / 5 of the cuttings, and one bud is left. Each cutting bed has 10 rows of cuttings, and each row has 10 plants. The spacing between plants is 2.0~2.5cm, a...

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Abstract

The invention discloses a cutting and breeding method for tree stocks of Populus tremula * P. tremuloides, comprising the following steps: preparing a slotter, manufacturing cuttingwood, processing, cutting, managing after cutting, transplanting and planting in field, wherein in the step of manufacturing the cuttingwood, the current-year semi-lignified twigs of the Populus tremula * P. tremuloides are collected from March to May every year to serve as cutting, simple-ink single-leaf stalk sections are cut from the cuttings to serve as the cuttingwood. When the method of the invention is adopted for cutting and breeding the tree stocks of the Populus tremula * P. tremuloides, callus grows on the cuttings one week after cutting; roots begin to grow after 12 days; and after 18 days, the average length of the roots reaches 6.5cm, the average diameter of the roots reaches 0.18 cm, and the rooting rate reaches above 80%. The method of the invention improves the cutting survival rate of the Populus tremula * P. tremuloides to a greater degree; and in addition, the method of the invention also has the advantages of short emergency time, high rooting rate, simple and easily controlled technology, low breeding cost and the like.

Description

technical field [0001] The invention belongs to a breeding method for forest seedlings, in particular to a cutting breeding method for European and American aspen hybrid seedlings, and belongs to the field of poplar clonal propagation. Background technique [0002] European and American aspen hybrid (P.tremula×P.tremuloides) is a hybrid of European aspen (P.tremuLa) and North American aspen (P.tremuLoides), which was developed by the Finnish Academy of Forestry with decades of time and a lot of funds. Aspen hybrid breeding and selection of excellent clones are carried out, and the finally selected aspen hybrid varieties have the characteristics of fast growth, cold resistance, barren tolerance, tall tree shape, and strong adaptability. They are excellent tree species for afforestation in northern mountainous areas. In addition, the material of the hybrid is soft, dense, white, and the trunk is straight. It is a high-quality raw material for papermaking, plywood, particleboar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G31/00
Inventor 王秋玉魏志刚闫绍鹏孟凡娟杨传平
Owner NORTHEAST FORESTRY UNIVERSITY
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