A kind of sassafras seed germination promoting method

A seed and sassafras tree technology, applied in the direction of germination equipment, etc., can solve the problems that cannot be solved, such as long dormant period of seeds, poor air permeability and water permeability, etc., and achieve the effects of shortening the production cycle, increasing the germination rate, and shortening the cultivation time

Inactive Publication Date: 2014-10-29
栗宁宁
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AI Technical Summary

Problems solved by technology

[0003] However, due to the long dormant period of sassafras seeds and various causes of irregular germination, the current research mainly focuses on two directions: the poor air permeability of the seed coat and the presence of germination inhibiting substances: the seed coat of sassafras has a dense structure, poor air permeability and water permeability; The germination inhibitory substance in the embryo gradually dissipates through the seed coat extravasation over time; the role of the seed coat in delaying germination is to inhibit the germination of the seed by limiting the penetration of oxygen on the one hand, and to hinder the germination on the other hand. Extravasation of germination-inhibiting substances dissipates
However, none of the above research results can explain the phenomenon of irregular germination. 2 o 2 Destruction of germination inhibitory substance, GA 3 (Gibberellin) promotes cell growth. Although it can increase the germination rate, it still cannot solve the problem of uneven speech, and it needs to be stratified at low temperature (5°C) for 240 days to relieve seed dormancy, which is not suitable for large-scale operation in actual production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 2.3 optimized treatment group is embodiment 1 scheme:

[0028] (1) Alkalized seed soaking treatment: Add NaHCO3 under stirring in 1000ml of clear water at 30°C to adjust the pH value of the solution to 8.2, and soak the pretreated seeds in this lye for 2 hours;

[0029] (2) Oscillating decompression and nitrogen-enriching treatment: Put the sassafras seeds obtained in step (1) into a sealed constant temperature water bath culture shaker, pump out part of the air, add nitrogen, and reduce the air pressure until the air pressure is 0.07MPa. When the temperature is 85%, start the shaking treatment, the shaking treatment temperature is 30°C, the shaking speed is 20r / min, and the time is 0.5h. Open the air valve to fully ventilate until the gas in the shaker is normal pressure air, and keep shaking for 12h;

[0030] (3) Acceleration treatment: wash the sassafras seeds obtained in step (2) with water at 15°C, and dry naturally, cover with straw to keep warm and accelerate ger...

Embodiment 2

[0053] 2.3 optimized treatment group is embodiment 2 scheme:

[0054] (1) Alkaline seed soaking treatment: at 30°C, add NaHCO3 under stirring in 1000ml of clear water to adjust the pH value of the solution to 8.5, and soak the pretreated seeds in this lye for 2 hours;

[0055] (2) Oscillating decompression and nitrogen-enriching treatment: put the sassafras seeds obtained in step (1) into a sealed constant temperature water bath culture shaker, pump out part of the air, add nitrogen, and reduce the air pressure until the air pressure is 0.06MPa. When the temperature is 90%, start the shaking treatment, the shaking treatment temperature is 40°C, the shaking speed is 10r / min, and the time is 0.5h. Open the air valve to fully ventilate until the gas in the shaker is air at normal pressure, and keep shaking for 12h;

[0056] (3) Acceleration treatment: wash the sassafras seeds obtained in step (2) with water at 15°C, and dry naturally, cover with straw to keep warm and accelerate ...

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Abstract

The invention discloses a method for facilitating germination of sassafras seeds, and belongs to the field of tree breeding. The method is characterized by comprising the following steps that (1) alkalization is conducted on the seeds, and the seeds are soaked; (2) vibration, decompression and nitrogen-rich processing are conducted; (3) accelerating germination is conducted. Compared with the prior art, the method for facilitating the germination of the sassafras seeds can facilitate the germination of the sassafras seeds, obtain the higher germination rate, and obtain the higher seedling survival rate at a relatively low temperature.

Description

technical field [0001] The invention relates to a method for promoting germination of seeds, in particular to a method for promoting germination of sassafras seeds suitable for planting and cultivating in Shandong area. Background technique [0002] Sassafras is a good urban ornamental tree and street tree. It has a tall and straight tree shape, beautiful tree posture, red and bright autumn leaves, and you can watch flowers, fruits and leaves. Studies in recent years have shown that sassafras has strong anti-pollution ability, especially good resistance to sulfur dioxide, hydrogen fluoride and chlorine. Sassafras is mainly propagated by seeds, but the seeds of Sassafras have a long dormant period, and the germination is irregular, and it takes 2 to 3 years to fully germinate and unearth. Therefore, the seeds should be soaked to accelerate germination before sowing. The current general method is: the sowing period is from February to mid-March. -30°C. Stir regularly and mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C1/02
Inventor 栗宁宁鲁仪增韩庆军谭好国
Owner 栗宁宁
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