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Hardwood cutting propagation method for tetraploid robinia pseudoacacia

A technology of tetraploid Robinia pseudoacacia and hard branch cuttings, which is applied in the field of garden plants, can solve the problems of restricting the promotion of fine varieties of forest trees, low survival rate of hard branch cuttings, and long seedling cultivation period, so as to promote the transformation of substances and the accumulation of rooting substances, Improve the cutting rooting rate and survival rate, the effect of short rooting time

Inactive Publication Date: 2010-08-18
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, after the introduction of tetraploid Robinia pseudoacacia into my country, there has been a problem of low survival rate of hardwood cuttings.
The propagation method of tetraploid Robinia pseudoacacia generally adopts tissue culture and grafting method to carry out asexual reproduction, and the tissue culture of tetraploid Robinia pseudoacacia needs aseptic conditions for culture medium preparation, sterilization, inoculation, cultivation and availability for seedling hardening and transplanting. Fully automatic greenhouses with temperature and relative humidity adjustment and professional operating techniques require large investment, low survival rate, and high production costs, which restrict the promotion of fine varieties of forest trees
The grafting method requires rootstock seedlings to be cultivated one year in advance, and the seedling cultivation period is long, and the cultivated seedlings form "little feet" due to the difference in growth speed between the rootstock and the scion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1. Collection of cuttings and treatment with growth regulator for the first time

[0051] 1) At the end of October of the current year, after the leaves of the annual tetraploid Robinia pseudoacacia have fallen, cut off the above-ground branches as cuttings. The diameter of the cuttings is 10-20mm and the length is 15cm. , The lower incision is 0.5cm away from the bud;

[0052] 2) Bind every 30 trimmed cuttings into a bundle to form a bundle of cuttings, wherein the lower end of the cuttings in the bundle of cuttings is strictly separated from the upper end, that is, the lower ends of all the cuttings are located at one end of the bundle of cuttings, and the upper ends of all the cuttings are located at the end of the bundle of cuttings. another side;

[0053] 3) Soak the lower end of the cuttings in the bundle of cuttings in the growth regulator indole butyric acid (IBA) solution, perform the first growth regulator treatment, take out the cuttings after soaking for 30...

Embodiment 2

[0067] Indole butyric acid (IBA) was used as a growth regulator in addition to the first and second growth regulator treatments, and the concentration of IBA was 400 mg / kg; the temperature in winter sand storage was 0-7 ° C, and the relative humidity was 70 Except %80%, all the other are identical with embodiment 1.

[0068] The root primordia appeared 10 days after cutting, a large number of roots and lateral roots began to form after 25 days, and the root system developed after 45 days, with a survival rate of 63.33%.

Embodiment 3

[0070] Except that indole butyric acid (IBA) is used as the growth regulator in the first and second growth regulator treatment processes, and the concentration of IBA is 600 mg / kg, all the others are the same as in Example 1.

[0071] After 10 days of cutting, root primordia appeared. After 25 days, a large number of roots and lateral roots began to form. After 45 days, the root system developed, and the survival rate was 65.67%.

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Abstract

The invention discloses a hardwood cutting propagation method for tetraploid robinia pseudoacacia and belongs to the field of ornamental plants. The method comprises the following step: soaking tetraploid robinia pseudoacacia cutting wood in a plant growth regulator for two times, wherein one or more of plant growth regulators, such as heteroauxin, naphthylacetic acid and rooting powder is selected to soak the cutting wood. The tetraploid robinia pseudoacacia propagated by the method has high rooting rate, the survival rate of the cutting wood is remarkably enhanced, the rooting time of the cutting wood is shortened and the technical problem of the hardwood cutting propagation for the tetraploid robinia pseudoacacia is solved.

Description

technical field [0001] The invention relates to a method for asexual propagation of deciduous trees, in particular to a method for cutting and propagation of black locust hard branches, and belongs to the field of garden plants. Background technique [0002] Black locust, also known as acacia, is a deciduous tree of Papilionaceae, native to North America, with a tree height of 25 meters and a breast diameter of 1 meter, with high economic value. It can be planted in the vast areas of 23 degrees to 46 degrees north latitude and 124 degrees to 86 degrees east longitude in my country. Black locust is light-loving, drought-resistant and barren, and has no strict requirements on soil. It can grow in areas with serious soil erosion in the middle and lower reaches of the Yellow River, and is also suitable for coastal sandy land and saline-alkali land with a salt content of 0.3%, even in slag piles and purple shale weathering. Can grow on gravel soil. [0003] Black locust is hard...

Claims

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Application Information

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IPC IPC(8): A01G1/00
Inventor 李云孟丙南冯秀兰杨华韩凤宝
Owner BEIJING FORESTRY UNIVERSITY
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