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Combined application of methyl jasmonate and Si<4+>

A technology of methyl jasmonate and tomato seedlings, applied in the directions of application, gardening tools/equipment, chemicals for biological control, etc., can solve the problem of lack of research on mutual synergy, avoid the reduction of detoxification effect and reduce accumulation , enhance the obvious effect

Active Publication Date: 2020-09-04
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Studies have shown that Si 4+ It has a mitigating effect on heavy metal stress in plants, but about Si 4+ Works with methyl jasmonate to relieve Cd 2+ Stress studies are rarely reported, and this compound combination is effective in alleviating Cd 2+ Whether it can play a synergistic effect on the toxicity of tomato seedlings has not been studied

Method used

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  • Combined application of methyl jasmonate and Si&lt;4+&gt;
  • Combined application of methyl jasmonate and Si&lt;4+&gt;
  • Combined application of methyl jasmonate and Si&lt;4+&gt;

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Embodiment

[0019] Pick plump and uniform tomato seeds, disinfect them with 3% sodium hypochlorite for 15 minutes, and rinse them repeatedly with distilled water until they are odorless. Then place it evenly in the tray with vermiculite, sprinkle a thin layer of vermiculite on the surface and cover with plastic wrap. Keep sufficient water, and tear off the plastic wrap after the seeds germinate to continue cultivating. When the tomato seedlings grew to two leaves and one heart, they were transferred to a hydroponic box containing 1 / 2 Hoagland nutrient solution, and placed in an automatic control growth room for cultivation (15-17 hours of light, 7-9 hours of darkness, and a relative humidity of 55 %~65%, the temperature is daytime temperature 24℃~28℃, night temperature 18~22℃). After three weeks of hydroponic cultivation, select plants with the same height and height and move them to hydroponic tanks (capacity 1000mL, 15*17cm) for experiments. Spray the tomato seedling leaves with 10 μmo...

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Abstract

The invention discloses application of methyl jasmonate and exogenous Si<4+> in resisting Cd<2+> stress of tomato seedlings, and belongs to the field of vegetable planting safety. Through combined application of methyl jasmonate and Si<4+>, the accumulation of Cd<2+> in tomato seedlings can be reduced, the photosynthetic pigment content is also increased, and the inhibition of photosynthesis by Cd2+ stress on tomato seedlings is alleviated. In addition, under the combined action of exogenous Si and methyl jasmonate, the growth inhibition of Cd<2+> on tomato seedlings is remarkably relieved inthe process of promoting the growth of tomatoes under the Cd<2+> stress, so that the root length, the plant height, the dry weight and the fresh weight are obviously increased.

Description

technical field [0001] The invention belongs to the field of vegetable planting safety, especially methyl jasmonate and exogenous Si 4+ Cd resistance in tomato seedlings 2+ Application under duress. Background technique [0002] Cd is one of the most toxic heavy metal elements in the environment. It has the characteristics of strong biological mobility, easy absorption and accumulation by plants, and can cause toxic effects on animals, plants and human body. High Cd 2+ Plant growth and development under concentration stress will be affected by a series of effects, including inhibition of seed germination, reduction of growth rate, lipid peroxidation, inhibition of stomatal opening, destruction of photosynthetic organs and mineral nutrient absorption, and transport disorders, etc., ultimately leading to reduced crop yield and quality . Cd 2+ It mainly enters the human body through the food chain, and accumulates in the human body through bioaccumulation and biomagnificat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/42A01N55/10A01P21/00A01G7/06
CPCA01G7/06A01N37/42A01N55/00
Inventor 魏婷李鲜孙燕妮郭军康贾红磊任心豪杨婧
Owner SHAANXI UNIV OF SCI & TECH
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