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Method for improving germination rate of acer catalpifolium seeds

A method for the germination rate of Acer catalpa, which is applied in the field of improving the germination rate of Acer catalpa seeds, and can solve the problems of restricting the protection and breeding of the endangered plant Acer catalpa

Inactive Publication Date: 2017-08-11
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on the germination of Acer catalpa is limited to scientific research experiments, and there is no germination method for its large-scale breeding, which seriously limits the protection and breeding of the endangered plant Acer catalpa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0030] According to a preferred embodiment of the present invention, the method includes step 1:

[0031] Step 1, collecting samara, processing, and storing at 2-6°C.

[0032] Wherein, in the present invention, the samara includes the fruit wing and the seeds inside the fruit wing.

[0033] According to a preferred embodiment of the present invention, in step 1, the samara whose fruit wing starts to turn yellow is collected.

[0034] Among them, when the fruit wings began to turn yellow, the seeds of Acer catalpa had the highest maturity, and the seeds had not lost water, the seed vigor was higher, and the later germination survival rate was higher.

[0035] According to a preferred embodiment of the present invention, in step 1, the treatment includes washing and air drying in sequence.

[0036] Among them, the purpose of cleaning is to remove impurities on the surface of the samara, and the purpose of air-drying is to dry the surface moisture of the samara while maintainin...

Embodiment 1

[0094] (1) Collect the samara when the fruit wings of the Acer catalpa samara start to turn yellow, wash them with clear water, and then air-dry them for 2 hours to remove the moisture on the surface of the fruit wings and keep the moisture of the seeds themselves. Put the air-dried samara into a ziplock bag, minus the four corners of the ziplock bag and leave 1×1cm in the middle 2 The holes are large and small to facilitate the respiration of the seeds, and they are stored at a low temperature of 4°C for 30 days.

[0095] (2) After 30 days, take out 100 samara preserved in low temperature, divide the samara from the middle into two halves, peel off the samara from the junction, take out the seeds in the middle, soak the seeds in clean water, remove the seeds floating on the water surface, and then wash Seeds that sink to the bottom, that is, get full seeds.

[0096] (3) Take out the plump seeds obtained, and gently peel off the seed coat from the cotyledons of the seeds with...

Embodiment 2

[0099] Repeat the process of Example 1, the difference is: in step (1), the samara is air-dried for 1.5h, and stored at 2°C for 40d; in step (3), when germination is carried out in water, the water has not passed the seed 1 / 3 of the thickness.

[0100] Among them, the average germination rate is 1.4 cm / week, and the seed germs stretched to 2-3 cm when the seed kernels are placed in the petri dish, and the average germination rate is 92%.

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PUM

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Abstract

The invention discloses a method for improving the germination rate of acer catalpifolium seeds. Firstly, samaras are collected and treated, and then the samaras are stored at a low temperature for 20-40 days; then, samara wings and seed coats of inner seeds are peeled off in sequence, seed kernels are obtained, and then the seed kernels are soaked in water and germinated. According to the method for improving the germination rate of the acer catalpifolium seeds, through the combination of low-temperature germination accelerating and physical stripping treatment, the physiological dormancy of the seeds is broken, and the germination rate of the seeds is increased.

Description

technical field [0001] The invention relates to the field of Acer catalpa, in particular to the field of seed germination of Acer catalpa, in particular to a method for improving the germination rate of Acer catalpa seeds. Background technique [0002] Catalpifolium (Acer amlum subsp. catalpifolium (Rehder) Y.S. Chen), also known as Catalpifolium subsp. Catalpifolium (Rehder) Y.S. Chen, is a plant of the genus Acer in the Aceraceae family. It is a rare and endangered tree species endemic to my country. The second-level key protected plants are scattered in the central plains of Sichuan and northern Guizhou. They are scattered in subtropical evergreen broad-leaved forests at an altitude of 500-1300m. During August-September, the tree has beautiful shape, tall trunk, hard and dense material, and is an excellent tree species for greening and timber. As a very small population of Acer catalpa, it is extremely rare in various production areas and has been endangered due to defores...

Claims

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Application Information

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IPC IPC(8): A01C1/00
CPCA01C1/00
Inventor 于涛张宇阳李俊清高健马文宝李小杰孔楚惟
Owner BEIJING FORESTRY UNIVERSITY