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Dry heat sterilizing method of cucurbitaceae stock seeds

A dry heat sterilization and seed technology, applied in the field of crop seed quality and safety, can solve the problems of cotyledon affecting grafting survival rate, cotyledon scalding, etc., and achieve the effects of improving seed germination rate, low seed damage and effective killing.

Inactive Publication Date: 2014-04-30
NINGBO ACAD OF AGRI SCI
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Problems solved by technology

In addition, the heat-resistant temperature of different crop seeds is different. If the temperature of dry heat treatment is too high, the cotyledons will be scalded and deformed, especially as rootstock materials for grafting. Poor growth of cotyledons will seriously affect the survival rate of grafting.
At present, there are few reports on the research related to the dry heat treatment of gourd rootstock seeds. Therefore, it is urgent to invent a kind of dry heat disinfection treatment method suitable for gourd rootstock seeds. Treatment technology with better control effect

Method used

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  • Dry heat sterilizing method of cucurbitaceae stock seeds
  • Dry heat sterilizing method of cucurbitaceae stock seeds

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Experimental program
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Effect test

Embodiment

[0017] Test material

[0018] The gourd rootstock seeds tested were collected from Yongzhen No. 1 inoculated with cucumber green mottle mosaic virus. After the seeds were collected, they were washed and dried in the sun to make the water content of the seeds below 8%.

[0019] dry heat treatment of seeds

[0020] Put the selected poisonous gourd seeds into a machine specially used for dry heat treatment of seeds (model: OL-THS-200T, produced by Shenzhen Oulang Test Equipment Co., Ltd.), and treat them for 24 hours at a temperature of 35°C and a relative humidity of 8%. ; Treat for 24 hours at a temperature of 50°C and a relative humidity of 5%; treat for 72 hours at a temperature of 72°C and a relative humidity of 2%. The untreated poisonous Yongzhen No. 1 gourd seeds were used as the control.

[0021] Post-treatment of dry heat treatment of seeds: the gourd seeds after dry heat treatment are placed in the machine for 24 hours to cool naturally to room temperature, and then ...

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Abstract

The invention discloses a dry heat sterilizing method of cucurbitaceae stock seeds. The method comprises the steps of treating the harvested cucurbitaceae stock seeds by a dry heat sterilizer in three stages, wherein the temperature of the first stage is 35 DEG C, the temperature of the second stage is 50 DEG C, and the temperature of the third stage is 72 DEG C. The dry heat sterilizing method of cucurbitaceae stock seeds can effectively kill pathogenic bacteria, especially, high-temperature resistant viruses and the like without measures such as chemicals utilization or seed soaking for changing the seed status, the operation is simple, and therefore, the method is suitable for large-scale seed treatment.

Description

technical field [0001] The invention relates to the field of crop seed quality safety, in particular to a method for dry heat disinfection of gourd rootstock seeds. Background technique [0002] Dry heat treatment is a physical method applied to seed disinfection. Compared with other seed disinfection and sterilization technologies, dry heat treatment can not only remove the pathogenic bacteria carried by the seed epidermis, but also more thoroughly kill the pathogenic bacteria inside the seed and inactivate the virus. , suitable for large-scale processing of a large number of seeds. Cucumber green mottle mosaic virus, a devastating disease that broke out in my country's watermelon production in recent years, is a seed-borne disease. According to field investigations and studies, the virus is mainly transmitted through the rootstock seeds of watermelon grafting; Other pathogenic bacteria (such as Fusarium, bacterial fruit rot, etc.) can also cause large-scale spread of disea...

Claims

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Application Information

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IPC IPC(8): A01C1/08
Inventor 严蕾艳王毓洪黄芸萍张华峰马凯慧陆袁波
Owner NINGBO ACAD OF AGRI SCI
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