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Water-culture method for relieving toxic action of cadmium on tomatoes by virtue of methyl jasmonate and application of methyl jasmonate

A tomato and hydroponic technology, applied in the application of MeJA, in the hydroponic field where MeJA alleviates the toxic effect of Cd on tomato, can solve problems such as lack of thorough research, threats to the health of the people, and impact on the annual income of the tomato industry, and achieves alleviation, inhibition, Growth-promoting effect

Inactive Publication Date: 2020-06-19
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the heavy metal pollution in the soil of our country's production areas, about 80% of tomato products do not meet the green standards, affecting billions of yuan in the annual income of the tomato industry, and at the same time posing a serious threat to the health of the general public
[0007] At present, there are many studies on MeJA resistance to cold and drought and high salinity stress, but less research on solving tomato Cd stress. Since its mechanism has not been thoroughly studied, the corresponding methods are still being explored

Method used

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  • Water-culture method for relieving toxic action of cadmium on tomatoes by virtue of methyl jasmonate and application of methyl jasmonate
  • Water-culture method for relieving toxic action of cadmium on tomatoes by virtue of methyl jasmonate and application of methyl jasmonate
  • Water-culture method for relieving toxic action of cadmium on tomatoes by virtue of methyl jasmonate and application of methyl jasmonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Choose tomato seeds with the same size and full grains (purchased from Xinjiang Shihezi Vegetable Research Institute), disinfect them with 3% sodium hypochlorite for 15 minutes, and then rinse them with distilled water until they are odorless. Then put the tomato seeds evenly in the tray with vermiculite, and sprinkle a thin layer of vermiculite on the surface of the seeds to prevent germination from light, add appropriate amount of water to the bottom of the tray and seal the plug with plastic wrap. Tear off the plastic wrap when cultivating in the artificial culture room until germination, and transfer the tomato to the hydroponic box containing 1 / 2 of the Hoagland nutrient solution when it grows to two leaves and one heart, and place it in the automatic control growth room for cultivation ( 15-17 hours of light, 7-9 hours of darkness, relative humidity of 55% to 65%, daytime temperature of 24°C to 28°C, night temperature of 18°C ​​to 22°C). After three weeks of hydro...

Embodiment 2

[0084] Choose tomato seeds with the same size and full grains (purchased from Xinjiang Shihezi Vegetable Research Institute), disinfect them with 3% sodium hypochlorite for 15 minutes, and then rinse them with distilled water until they are odorless. Then put the tomato seeds evenly in the tray with vermiculite, sprinkle a thin layer of vermiculite on the surface of the seeds, avoid light to germinate, add appropriate water to the bottom of the tray and seal the plug with plastic wrap. Tear off the plastic wrap when cultivating in the artificial culture room until germination, and transfer the tomato to a hydroponic box containing 1 / 2 of the Hoagland nutrient solution when it grows to two leaves and one heart, and place it in an automatic control growth room for cultivation ( 15-17 hours of light, 7-9 hours of darkness, relative humidity of 55% to 65%, daytime temperature of 24°C to 28°C, night temperature of 18°C ​​to 22°C). After three weeks of hydroponic cultivation, select...

Embodiment 3

[0088]Choose tomato seeds with the same size and full grains (purchased from Xinjiang Shihezi Vegetable Research Institute), disinfect them with 3% sodium hypochlorite for 15 minutes, and then rinse them with distilled water until they are odorless. Then put the tomato seeds evenly in the tray with vermiculite, sprinkle a thin layer of vermiculite on the surface of the seeds, avoid light to germinate, add appropriate water to the bottom of the tray and seal the plug with plastic wrap. Tear off the plastic wrap when cultivating in the artificial culture room until germination, and transfer the tomato to a hydroponic box containing 1 / 2 of the Hoagland nutrient solution when it grows to two leaves and one heart, and place it in an automatic control growth room for cultivation ( 15-17 hours of light, 7-9 hours of darkness, relative humidity of 55% to 65%, daytime temperature of 24°C to 28°C, night temperature of 18°C ​​to 22°C). After three weeks of hydroponic cultivation, select ...

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Abstract

The invention provides a water-culture method for relieving a toxic action of cadmium on tomatoes by virtue of methyl jasmonate and application of MeJA. The water-culture method comprises the following steps: disinfecting tomato seeds by virtue of sodium hypochlorite, uniformly putting the tomato seeds into a tray containing vermiculite, when each tomato seed grows to present two leaves and a core, transferring the tomato seeds into a water-culture tank, and carrying out culture for three weeks; and spraying MeJA with a concentration of 10umol / L to leaves of tomato seedlings, and processing the tomato seedlings by virtue of 2mg / kg Cd(CdCl2.2.5H2O) after 24h. According to the method, the Cd content of tomato roots can be effectively decreased, the biomass of the tomatoes under Cd stress canbe increased, the content of endogenous hormones in the tomato seedlings can be regulated, and oxidative damage of tomato cells as well as synthesis inhibition of photosynthetic pigments caused by the Cd stress can be relieved, so that the quality of the tomatoes is improved.

Description

technical field [0001] The invention belongs to the field of vegetable planting safety, and in particular relates to a hydroponic method for MeJA to alleviate the toxic effect of Cd on tomatoes and the application of MeJA. Background technique [0002] Soil is the natural environment on which human beings depend and an important resource for agricultural production. Due to the rapid increase in population and the further development of economic globalization, the problem of environmental pollution caused by human activities continues to worsen, and the problem of heavy metal pollution in soil is very serious worldwide. Among them, soil Cd pollution is one of the more serious environmental pollution problems. [0003] Cd in soil enters plants through the apoplast or symplast pathway and is stored in plant organs. Cd accumulated in crops will damage the cell membrane of crops, reduce the growth and metabolism of crops, and seriously affect the yield and quality of crops. At t...

Claims

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Application Information

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IPC IPC(8): A01G31/00A01G7/06A01N37/42A01P21/00
CPCA01G31/00A01G7/06A01N37/42
Inventor 魏婷孙燕妮花莉郭军康李鲜
Owner SHAANXI UNIV OF SCI & TECH
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