A method for improving the propagation efficiency of catalpa grafted seedlings

A technology for breeding efficiency and grafting seedlings, applied in grafting, botany equipment and methods, horticulture, etc., can solve the problems of low survival rate of cuttings, high production costs, high technical requirements, etc., achieve rapid cultivation and efficient use, and reduce the cost of seedlings Cost, the effect of improving the efficiency of seedling raising

Active Publication Date: 2016-08-24
SHANDONG FOREST SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the incompatibility of self-pollination, catalpa often blooms and does not bear fruit; even if different clones are mixed together, they can bear fruit after pollination by insects, but there are few seeds, the germination rate of seeds is very low, and seed reproduction is difficult
Catalpa is a tree species that is difficult to root, and the survival rate of cutting propagation is low, and the existing related cutting technology is not easy to be popularized and applied in actual production due to high operation requirements, or the need for facility conditions, or labor-intensive and high cost
Although root burial propagation is relatively easy, root burial propagation objectively restricts the scale of breeding because of its relatively small number of propagation materials.
Although tissue culture reproduces quickly, it requires a large investment in equipment conditions, high technical requirements, and high production costs.
At present, the seedlings of catalpa are mainly used as rootstocks for grafting and propagation to cultivate good seedlings of catalpa, but rootstocks must first be cultivated for grafting. At present, rootstocks are mostly cultivated by catalpa seedlings in production, but it takes at least 2 years after sowing to achieve The thickness required for grafting rootstock has the disadvantage of long production cycle for rootstock cultivation

Method used

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  • A method for improving the propagation efficiency of catalpa grafted seedlings

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Sowing seedlings and cultivating rootstocks: Collect mature catalpa seeds in September, collect them before the capsules crack, dry the collected catalpa seeds for 5 days, peel off the skin, and then soak the seeds in warm water at 70°C for 20 hours, take them out and use them 4 times of wet sand is mixed and mixed well, stacked in a small shed for germination, when the seeds are 30% to 40% white, they can be sown, and the seeds are sown in light matrix non-woven fabric containers by on-demand mode. Sow 4 seeds in a spun cloth container, and cover with 0.5 cm of peat soil after sowing, so that the seeds are not visible. Spray water immediately after sowing, and pay attention to prevent the seeds from being exposed when spraying water. After sowing, build a small shed above the light matrix non-woven fabric container to increase the temperature and promote the growth of seedlings. Catalpa saplings with a height of 10 cm can be thinned, and one strong seedling is rese...

Embodiment 2

[0029] 1) Sowing and raising seedlings and cultivating rootstocks: Collect mature catalpa seeds in September, collect them as soon as possible before the capsules crack, dry the collected catalpa seeds for 7 days, peel them, and then soak the seeds in 50°C warm water for 24 hours, remove them and use Mix 2 times of wet sand and mix well, stack them in a small arched shed for germination, when the seeds are 30% to 40% white, they can be sown. Sow 8 seeds in a light matrix non-woven container, cover with 1cm of peat soil after sowing, it is advisable to see no seeds. Immediately after sowing, spray water, and be careful not to expose the seeds when spraying. After sowing, build a small arched shed above the light matrix non-woven container to increase the temperature to promote the growth of seedlings. Catalpa saplings can be thinned with a height of 15cm, and each container retains 1 strong seedling. When the leaves of catalpa seedlings are fully expanded, the foliage is spray...

Embodiment 3

[0034] 1) Sowing and raising seedlings and cultivating rootstocks: Collect mature catalpa seeds in September, collect them as soon as possible before the capsules crack, dry the collected catalpa seeds for 6 days, peel them, and then soak the seeds in warm water at 60°C for 22 hours, remove them and use Mix 3 times of wet sand and mix well, stack them in a small arched shed for germination, when the seeds are 30% to 40% white, they can be sown. Sow 6 seeds in a light matrix non-woven container, and cover with 0.8cm of peat soil after sowing, if the seeds are not visible. Immediately after sowing, spray water, and be careful not to expose the seeds when spraying. After sowing, build a small arched shed above the light matrix non-woven container to increase the temperature to promote the growth of seedlings. Catalpa saplings can be thinned with a height of 12cm, and each container retains 1 strong seedling. When the leaves of catalpa seedlings are fully expanded, the foliage is...

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Abstract

The invention discloses a method for improving the reproduction efficiency of catalpa bungei grafted seedlings and relates to the field of forest elite reproduction. The method comprises the steps that firstly, catalpa ovata grafting stocks are cultivated through the sowing and seedling raising mode, catalpa bungei grafting is conducted by bud grafting annual catalpa ovata stocks provided with xylem, after the grafting, twig cuttage is conducted on remaining catalpa ovata stocks, so that grafting-used stocks are cultivated, and the catalpa ovata stocks can be used as catalpa bungei bud-grafting stocks in June of the next year. Compared with a conventional method of cultivating stocks through sowing and seedling raising, the cycle is shortened by one year, by means of the method of reproducing the catalpa ovata stocks through cuttage simultaneously, catalpa ovata stem segments which are cut away in the grafting process are utilized sufficiently, resource waste is avoided, meanwhile, the seedling raising cost is reduced, the seedling raising efficiency is improved, the catalpa ovata stocks can be circularly applied to catalpa bungei grafting and reproduction in the future, rapid cultivation and efficient utilization of the stocks are achieved, the catalpa bungei grafting and reproduction efficiency is greatly improved, the seedling raising cycle is short, and the survival rate is high.

Description

technical field [0001] The invention relates to the field of forest tree seed breeding, in particular to a method for improving the propagation efficiency of catalpa tree grafting and raising seedlings. Background technique [0002] Catalpa bungei C.A.Meyer. belongs to the Bignoniaceae family and belongs to the genus Catalpa. It has been cultivated in my country for more than 2,000 years. It is a precious and high-quality timber tree species and a valuable garden ornamental tree species in my country. It has been included in the national timber strategic reserve tree species. Table of contents. Due to the incompatibility of self-pollination, catalpa often blooms and does not bear fruit; even if different clones are mixed together, they can bear fruit after pollination by insects, but there are few seeds, the germination rate of seeds is very low, and seed reproduction is difficult. Catalpa is a tree species that is difficult to root, and the survival rate of cutting propagat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/06A01G17/00
CPCA01G2/30A01G17/005
Inventor 董玉峰姜岳忠王卫东刘晓君秦光华荀守华王月海
Owner SHANDONG FOREST SCI RES INST
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