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Method for lowering cadmium content in soybeans by arbuscular mycorrhizal fungi

A technology for mycorrhizal fungi and soybeans, applied in the field of biological agriculture, can solve problems such as phytotoxicity, rice growth stagnation, and cell division obstacles, and achieve the effects of ensuring quality and safety and low operating costs.

Inactive Publication Date: 2015-09-23
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
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Problems solved by technology

After plants are poisoned by cadmium, cell division will be hindered or abnormally divided, which will prolong the cell division cycle, chromosome breakage, distortion, adhesion and liquefaction, resulting in stagnation or abnormal growth of rice. h 2 o 2 , causing the plant's resistance mechanism to heavy metals to no longer work, and the plant shows symptoms of toxicity or dies

Method used

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  • Method for lowering cadmium content in soybeans by arbuscular mycorrhizal fungi
  • Method for lowering cadmium content in soybeans by arbuscular mycorrhizal fungi
  • Method for lowering cadmium content in soybeans by arbuscular mycorrhizal fungi

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Experimental program
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Effect test

Embodiment 1

[0031] The field test site A soil with light to medium texture and good drainage suitable for soybean growth was selected to set up a split-plot test of mycorrhizal infection. The previous mycorrhizal crop corn and the non-mycorrhizal crop buckwheat were used as the main area respectively, and the amount of phosphorus applied was 0, 50, 100, 150 and 200 kg P 2 o 5 / ha was used as a test split plot, repeated four times, and this experimental design was used to control the infection rate of arbuscular mycorrhizal fungi on soybean roots.

[0032] After the above-mentioned treatment in the experimental field, soybeans were planted in plots and routine field management was carried out during the soybean growth period; soybean roots were collected 7-8 weeks after soybean sowing, and stained with trypan blue (Typan Blue) and amplified cross method. Calculate the infection rate of arbuscular mycorrhizal fungi. During the soybean harvest period, the soybean grains were washed, dried,...

Embodiment 2

[0035] A split-plot test of mycorrhizal infection was set up in field test site B soil with light-medium texture and good drainage suitable for soybean growth. The previous mycorrhizal crop corn and the non-mycorrhizal crop buckwheat were used as the main area respectively, and the amount of phosphorus applied was 0, 50, 100, 150 and 200 kg P 2 o 5 / ha was used as a test split plot, repeated four times, and this experimental design was used to control the infection rate of arbuscular mycorrhizal fungi to soybean.

[0036] After the above-mentioned treatment in the experimental field, soybeans were planted in plots and routine field management was carried out during the soybean growth period; soybean roots were collected 7-8 weeks after soybean sowing, and the soybean roots were collected by the trypan blue staining method (Typan Blue) and the enlarged cross method. Calculate the infection rate of arbuscular mycorrhizal fungi. During the soybean harvest period, the soybean grai...

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Abstract

The invention relates to a method for lowering cadmium content in soybeans by AM (arbuscular mycorrhizal) fungi. The method includes the steps such as soil selecting, field cultivating of the AM fungi, planting of the soybeans, field management, analysis on infection rate of the AM fungi, and measurement on the cadmium content. By the use of the method, accumulation of soybean biomass can be promoted, and Cd content is evidently reduced; secondary pollution caused by the use of the traditional Cd repairing method wherein various chemicals are added into the soil can be avoided; the cost is saved. Therefore, the method is of great significance and popularization value to the soybean food safety and the soybean planting management.

Description

technical field [0001] The invention relates to biological agriculture, in particular to a method for reducing cadmium content in soybeans by using arbuscular mycorrhizal fungi. Background technique [0002] Cadmium (Cd) is a common environmental and industrial poison with a long half-life (up to 10-35 years), and it migrates actively in the soil-plant system. With the development of industrial and agricultural production, the content of cadmium in the environment is increasing year by year. According to statistics, the total amount of cadmium entering the soil in the world is 22,000 tons every year. [0003] The harm of Cd to plants mainly includes inhibiting seed germination, causing damage to plant roots, hindering photosynthesis of leaves, disrupting cell metabolism, and even programmed death. Studies by Ditoppil et al. have shown that cadmium stress inhibits the activity of enzymes and causes damage to plant roots, mainly manifested as damage to the nucleolus of root ...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G1/04
CPCA01G18/10A01G22/00
Inventor 沙之敏褚清南曹林奎袁婧齐斌
Owner SHANGHAI JIAO TONG UNIV
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