Method for appraising cadmium tolerance of chrysanthemums

An identification method and chrysanthemum technology, applied in the agricultural field, can solve the problems of potential threats not being fundamentally eliminated, harming plants, easy to be reactivated, etc., and achieve the effects of simple and easy evaluation and identification methods and excellent cadmium tolerance.

Active Publication Date: 2015-06-10
SHANGHAI JIAO TONG UNIV
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  • Application Information

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Problems solved by technology

This method is an in-situ restoration, and heavy metals still exist in the soil, which are easy

Method used

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  • Method for appraising cadmium tolerance of chrysanthemums
  • Method for appraising cadmium tolerance of chrysanthemums
  • Method for appraising cadmium tolerance of chrysanthemums

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Embodiment 1

[0070] In view of the difference in cadmium tolerance of different plants, the present invention establishes a cadmium tolerance evaluation and identification method for chrysanthemum varieties for the first time. In this method, 11 chrysanthemum varieties were used. According to the symptoms of cadmium damage, 3 varieties with strong tolerance, average and poor were screened out, and the plant height, root length, dry weight of plant roots and aboveground parts, chlorophyll and carotenoids were measured by different cadmium treatment concentrations. Content, photochemical efficiency of leaves, relative conductivity, malondialdehyde content and other morphological and physiological and biochemical indicators were measured and evaluated. Through correlation comparison analysis, effective indicators with significant correlation were screened out to evaluate the cadmium tolerance of different chrysanthemum varieties. At the same time, the determination material of the present inve...

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Abstract

The invention discloses a method for appraising the cadmium tolerance of chrysanthemums. The method comprises the following steps: selecting cutting seedlings of different varieties of chrysanthemums, and preculturing the cutting seedlings; after the cutting seedlings are precultured for 3-5 days, carrying out cadmium treatment on the cutting seedlings by using cadmium treatment liquid, wherein the cadmium treatment liquid is a Cd<2+> containing Hoagland nutrient solution, and the concentration of Cd<2+> in the cadmium treatment liquid is 0.5mg/L; and carrying out appraisal on the cadmium tolerance, namely after the cadmium treatment is performed for 30d, appraising the root length, the dry weight of roots, the content of malonaldehyde and the total content of chlorophyll in leaves so as to obtain synthesis scores, and according to the synthesis scores, carrying out synthetical sequencing on the different varieties of chrysanthemums, the greater the synthesis score is, the poorer the cadmium tolerance is, and the smaller the synthesis score is, the higher the cadmium tolerance is. The method disclosed by the invention can be used for establishing the effective screening indexes of cadmium-tolerant chrysanthemum varieties, and providing basis for the heavy metal cadmium resistance and restoration researches of compositae plants.

Description

technical field [0001] The invention relates to a variety screening technology in the agricultural field, in particular to an evaluation and identification method for chrysanthemum cadmium tolerance. Background technique [0002] With the advancement of industrialization and urbanization, environmental problems caused by heavy metal pollution have become increasingly serious. Cadmium pollution has become one of the most widespread and harmful environmental problems in the world. Cadmium pollution can not only directly lead to the decline of crop yield and quality, but also endanger human and animal health through the food chain. [0003] The treatment of soil heavy metal cadmium pollution should adhere to the principle of "prevention first, comprehensive prevention and control", and strengthen the control efforts, promote clean and environmentally friendly production, strictly control the discharge of industrial "three wastes" containing heavy metal cadmium, and prevent its ...

Claims

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Application Information

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IPC IPC(8): G01N33/00G01N5/04G01N21/31G01N21/64G01R27/02G01N21/72
Inventor 曾丽何燕红汪晓沙王鹏彭勇政刘晓丛陶懿伟迪力达尔·依明徐佳琳
Owner SHANGHAI JIAO TONG UNIV
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