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Graft inoculation identification method of tomato yellow leaf curl virus disease

A technology of tomato yellow leaf curl and yellow leaf curl virus, which is applied in the field of inoculation method of tomato yellow leaf curl virus disease, can solve problems such as difficult identification of whitefly inoculation and inability to use whitefly inoculation identification, etc. , to achieve the effect of simple vaccination identification method and guaranteed accuracy

Inactive Publication Date: 2009-10-21
SHANGHAI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently, literature: H.Delatte, H.Holota, B.Reynaud and J.Dintinger.Characterisation of a quantitative resistance to vector transmission of Tomatoyellow leaf curl virus in Lycopersicon pimpinellifolium[J].European Journal of Plant Pathology(2006)114:245 -253 has reported a method of inoculation identification using whitefly (Bemisia tabaci), but there are some obvious defects in this method: 1, limited by the breeding season of whitefly, because whitefly mostly occurs in summer and autumn, There are few whiteflies in winter and spring, so it is difficult to identify whitefly inoculation in winter and spring
2. Restricted by the occurrence area of ​​Bemisia tabaci, because most of Bemisia tabaci occurs in the southern region of my country, it is not possible to use whitefly inoculation identification in the northern region.

Method used

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  • Graft inoculation identification method of tomato yellow leaf curl virus disease
  • Graft inoculation identification method of tomato yellow leaf curl virus disease
  • Graft inoculation identification method of tomato yellow leaf curl virus disease

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Tomato varieties were selected from 2300.

[0020] (1) select the tomato that has been infected with yellow leaf curl virus disease as stock, carry out the seedling raising of the material to be identified, when two true leaves, adopt oblique cutting method to graft it on the susceptible stock, the first 3 after grafting Day, keep 90% humidity, temperature is 20 ℃, shading grows seedlings, after grafting 5 days, in 50% humidity, temperature is the normal cultivation under the condition of 25 ℃;

[0021] During the nursery of the material to be identified, use Actay to prevent the infestation of Bemisia tabaci;

[0022] (2) 15 days after grafting, 30 days, extract the DNA of scion respectively, whether contain tomato yellow leaf curl virus disease in scion with PCR method detection;

[0023] The specific steps are as follows:

[0024] Scion DNA extraction method:

[0025] 1. Add 2 pieces of fresh leaves the size of the cap of the centrifuge tube to the 1.5ml centrifug...

Embodiment 2

[0050] Tomato varieties were selected from 2583.

[0051] 1) Select the tomato infected with yellow leaf curl virus as the rootstock, raise the seedlings of the material to be identified, and when there are two true leaves, use the oblique cutting method to graft it on the susceptible rootstock, and the first 5 days after grafting , maintain 95% humidity, temperature is 25 ℃, shading seedling cultivation, after grafting 5 days, in 70% humidity, the temperature is normal cultivation under the condition of 30 ℃;

[0052] During the nursery of the material to be identified, use Actay to prevent the infestation of Bemisia tabaci;

[0053] (2) 15 days after grafting, 30 days, extract the DNA of scion respectively, whether contain tomato yellow leaf curl virus disease in scion with PCR method detection;

[0054] The specific steps are as follows:

[0055] Scion DNA extraction method:

[0056]1. Add 1 to 2 pieces of fresh leaves the size of the cap of the centrifuge tube into a 1....

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Abstract

The invention provides a graft inoculation identification method of tomato yellow leaf curl virus disease, which comprises the following steps: firstly, selecting a tomato suffered from yellow leaf curl virus as a parental stock, raising a seedling to a tomato to be identified, grafting the tomato on the parental stock of the tomato suffered from the virus by adopting an oblique cut grafting method when the tomato has two true leaves, keeping the humidity of 90-95 percent and the temperature of 20-25 DEG C before 3-5 days after the grafting, shielding the light and culturing the seedling, normally culturing the seedling under the conditions that the humidity is 40-70 percent and the temperature is 25-30 DEG C after the grafting is performed for 5 days; secondly, extracting DNA of scion wood within 15-40 days after the grafting, and detecting whether the scion wood contains the tomato yellow leaf curl virus disease or not by using a PCR method. The invention can ensure the accuracy of the grafting identification, is simple without limit of tobacco whiteflies occurring time and location and can be applied to the four seasons or areas without whiteflies.

Description

technical field [0001] The invention relates to an inoculation method for tomato yellow leaf curl virus disease. Background technique [0002] Tomato yellow leaf curl virus is a geminivirus transmitted by Bemisia tabaci. With the outbreak of Bemisia tabaci in recent years, tomato yellow leaf curl virus has become aggravated year by year. Therefore, it is imminent to establish a method for inoculation identification of tomato yellow leaf curl virus disease and to identify the resistance of existing varieties or lines. [0003] Currently, literature: H.Delatte, H.Holota, B.Reynaud and J.Dintinger.Characterisation of a quantitative resistance to vector transmission of Tomatoyellow leaf curl virus in Lycopersicon pimpinellifolium[J].European Journal of Plant Pathology(2006)114:245 -253 has reported a method of inoculation identification using whitefly (Bemisia tabaci), but there are some obvious defects in this method: 1, limited by the breeding season of whitefly, because whit...

Claims

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Application Information

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IPC IPC(8): C12Q1/70C12Q1/68A01G1/06
Inventor 万延慧朱为民于力朱龙英
Owner SHANGHAI ACAD OF AGRI SCI