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Carex brunnescens seed germination method

A technology of Carex brown scale and seeds, applied in the field of Carex brown scale seed germination, can solve the problem of not quickly breaking the dormancy of Carex brown scale seeds, reduce the damage of original vegetation, shorten the recovery time, and solve the problem of breeding Effect

Inactive Publication Date: 2019-05-17
NORTHWEST INST OF ECO-ENVIRONMENT & RESOURCES CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the dominant species and constructive species for the ecological management of Maqu alpine grassland, there are no related reports on quickly breaking the seed dormancy of Carex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The method for the germination of Carex brown scale seeds of the present embodiment, the method may further comprise the steps:

[0029] S1. Collect full-grained Carex sativa seeds at the mature stage, lay them flat in the shade in a ventilated place at a temperature of 25°C and let them dry for 35 days, then remove the sundries on the surface of the seeds, and use the distilled water flotation method to remove empty grains and damaged ones The seeds were rinsed with distilled water for 2 minutes, and then placed in a ventilated and cool place at a temperature of 25°C and allowed to air for 35 days to obtain treated Carex spp. seeds;

[0030] S2. Soak the treated Carex sativa seeds obtained in S1 in H with a mass fraction of 98%. 2 SO 4 After being immersed in the solution for 2.5 minutes, rinsed with distilled water until the pH value is 6.5, the Carex brownia seeds with the seed coat removed are obtained;

[0031] S3, put the Carex brown scales seeds that have been ...

Embodiment 2

[0060] The method for the germination of Carex brown scale seeds of the present embodiment, the method may further comprise the steps:

[0061] S1. Collect full-grained Carex sativa seeds at the mature stage, lay them flat in the shade in a ventilated place at a temperature of 20°C and let them dry for 40 days, then remove impurities on the surface of the seeds, and use distilled water flotation to remove empty grains and damaged ones The seeds were rinsed with distilled water for 2 minutes, and then placed in a cool place in a ventilated place with a temperature of 20°C and left to dry for 40 days to obtain treated Carex sativa seeds;

[0062] S2. Soak the treated Carex sativa seeds obtained in S1 in NaOH with a concentration of 10% by mass for 3.5 hours, rinse with distilled water until the pH value is 7.5, and obtain the Carex sativa seeds with the seed coat removed ;

[0063] S3, putting the Carex japonicus seeds obtained in S2 into the ethanol solution with a mass fracti...

Embodiment 3

[0068] The method for the germination of Carex brown scale seeds of the present embodiment, the method may further comprise the steps:

[0069] S1. Collect full-grained Carex sativa seeds at the mature stage, lay them flat in the shade in a ventilated place at a temperature of 30°C and let them dry for 30 days, then remove impurities on the surface of the seeds, and use sieve filtration to remove empty grains and damaged seeds The seeds were rinsed with distilled water for 2 minutes, and then placed in a cool place in a ventilated place with a temperature of 30°C and allowed to air for 30 days to obtain treated Carex spp. seeds;

[0070] S2. Cut the treated Carex sativa seeds obtained in S1 to break the seed coat at the end of the germ far away from the Carex sativa seeds, but the seed embryo must not be damaged, and rinse with distilled water to obtain the sarcophagus with the seed coat removed grass seeds;

[0071] S3, putting the Carex japonicus seeds obtained in S2 into t...

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PUM

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Abstract

The invention provides a carex brunnescens seed germination method. The method comprises the steps as follows: after carex brunnescens seeds are washed and aired, seed coats are broken with a mechanical treatment method and an acid or alkaline solution soaking method, disinfection is performed with an ethanol solution after washing, then, seeds are soaked with distilled water and soaked with a gibberellic acid solution with concentration of 50-200 mg / L, meanwhile, temperature change tretament adopting 25 DEG C and 5 DEG C high / low temperature alternation is performed, and a germination test isconducted. The germination rate of the carex brunnescens seeds is increased, the germination rate after 10 d of germination reaches 47.9%-65.1%, seeds germinate uniformly, the germination time is shortened, the problem of breeding of carex brunnescens in Maqu cold upland is solved, the biological desertification prevention and control cost is reduced, the method has great significance in shortening the restoration time of deteriorated grassland, reducing original vegetation deterioration and improving sand stabilization effect, and new research prospects are opened up for technical approachesof exploring ecological restoration of deteriorated grassland in the cold upland.

Description

technical field [0001] The invention belongs to the technical field of seed germination, and in particular relates to a method for germination of Carex brown scale seeds. Background technique [0002] Known as the "No. 1 Grassland in Asia", the Yellow River Shouqu (Maqu) National Nature Reserve is located in the east of the Qinghai-Tibet Plateau, in Maqu County, Gannan Tibetan Autonomous Prefecture, Gansu Province. The largest and most representative alpine swamp wetland. The Yellow River surrounds Maqu County from the east, south and north, forming a huge "U"-shaped bend known as the first bend of the "Jiuqu Yellow River". Its unique geographical environment is indispensable for maintaining water resources and ecological security in the Yellow River Basin. substitute role. However, since the 1960s, due to the special geological, geomorphic conditions and climate elements and the rapid development of social economy, the ecological environment of the alpine grassland in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C1/00
Inventor 康建军赵文智周宏王德金孙程鹏
Owner NORTHWEST INST OF ECO-ENVIRONMENT & RESOURCES CAS
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