A New Method for Improving the Efficiency of Cutting Propagation of Catalpa

A technology of cutting propagation and new method, applied in the field of catalpa tree seedling breeding, can solve the problems of inability to guarantee the shape of progeny of excellent strains, limited seed yield for sowing and propagation, high cost of tissue culture, etc., so as to ensure that the shape of progeny remains unchanged. , The effect of improving the propagation efficiency of catalpa tree cuttings and reducing the cost of propagation

Inactive Publication Date: 2019-06-11
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many deficiencies in today's catalpa seedling breeding technology, which are mainly manifested in the following aspects: 1) The survival rate of cuttings is very low regardless of hard branches or young branches, and the best effect in existing reports is only 50%; %; 2) Seed reproduction is limited by seed yield, and the shape of progeny of good strains cannot be guaranteed; 3) Grafting is prone to rhizosphere nematode damage; 4) Tissue culture is expensive and the technology is complicated and cumbersome

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A new method for improving catalpa cutting propagation efficiency, comprising the following steps:

[0022] 1) Establishment of ear-picking nursery: Choose land with flat land, good irrigation and drainage, fertile soil, sandy loam soil with good drainage is better. The retractable movable shade canopy is erected according to 4m×6m, the height is about 2.5m, and the shading rate is required to reach 95%. Apply farmyard manure or organic fertilizer as base fertilizer at an amount of 4000kg / mu, deep plow to make ridges with a width of 1.7m, and dig drainage ditches between the ridges with a width of 0.3m and a depth of 0.4m. The female parent is two-year-old seedlings of catalpa (8611), which are planted in late autumn or early spring, with a row spacing of 1m×1m, that is, two rows per ridge, and a spacing of 1m. After planting, cut off the stem at a distance of 30cm from the ground, so as to promote more side branches.

[0023] 2) Preparation of the cutting seedbed: th...

Embodiment 2

[0030] Adopt the method of embodiment 1, from March, 2014 to July, 2015, carry out the field test at the Baima base of Nanjing Forestry University, test material is two kinds of catalpa 8611 and common catalpa, each kind cuttage 1000 respectively with embodiment 1 Methods The cuttings were treated, and 1000 ordinary hard branch cuttings and twig cuttings without shading treatment were respectively selected as controls. The experimental data for two consecutive years showed that: the experimental data using twig cuttings without shading treatment The survival rate is more than 20%, and the survival rate of the cutting experiment using common hardwood cuttings is only about 5%, but the survival rate of the catalpa cuttings treated by this method is 92%, 90%, 85%, 87%, respectively. %, the survival rate of catalpa cuttings has been greatly improved.

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Abstract

The invention discloses a new method for improving the cutting propagation efficiency of catalpa, which comprises: 1) establishment of ear-picking nursery; 2) preparation of cutting seedbed; 3) preparation of cutting matrix; 4) cultivation and harvesting of ear bar; 5) Cutting process; 6) Daily management after cutting; 7) Hardening and transplanting. According to the transpiration and rooting rules of plants, the present invention uses shading to obtain young branches with low lignification, and continues to combine shading with shading treatment on cuttings, greatly improving the survival rate of catalpa cuttings (up to 92%), it overcomes the inconvenience caused by using techniques such as tissue culture and grafting to propagate catalpa seedlings, greatly shortens the nursery cultivation time, is simple to operate, easy to master, and has good practicability.

Description

technical field [0001] The invention belongs to the technical field of catalpa seedling breeding, and in particular relates to a new method for improving the cutting propagation efficiency of catalpa. Background technique [0002] Catalpa ( Catalpa bungei ) is a deciduous tree of the genus Catalpa in the Bignoniaceae family. It is native to my country and is mainly distributed in the Yellow River and Yangtze River basins. Catalpa has been planted on a large scale in the Han Dynasty, and it has important application value in preventing soil erosion, protecting farmland, building timber forests, garden viewing, and road greening. With the continuous advancement of my country's ecological city construction and the requirements of industrial and economic development, the demand for fine varieties of Catalpa will continue to expand. However, there are still many deficiencies in today's catalpa seedling breeding technology, which are mainly manifested in the following aspects: 1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G2/10
CPCA01G22/00
Inventor 王良桂秦国强岳远征杨秀莲施婷婷何岭丁文杰王晰张莹婷
Owner NANJING FORESTRY UNIV
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