Method for measuring stress-resistant capability of plants

Abstract

The invention discloses a method for measuring stress-resistant capability of plants. Healthy seedlings relatively consistent in growth are cultured, plant seedlings which are used for inspection of the leaf growth condition are cultured by applying stress factors, the maximum leaf length and the maximum leaf width of the plants in different sizes are measured, and a leaf area model is established; just unfolded young leaves are selected to serve as target leaves, a change equation of the maximum leaf length, the maximum leaf width and the leaf areas of the target leaves with the culture time is established with a Logistic equation adopting four parameters, growth parameters of the leaf areas of the target leaves cultured under different stress conditions as well as the growth rate in half of the logarithmic phase and the lasting time of the logarithmic phase are obtained; the different-stress-resistant capability of the plants is judged according to the parameters. Through investigation of the maximum leaf length, the maximum leaf width and other easy-to-measure indexes of the plant leaves, dynamic changes of the maximum leaf length, the maximum leaf width, the leaf areas and other biomass parameters of the plant leaves can be rapidly acquired, the resistance capability of the plant to the outside stress can be timely fed back, the experiment is simple and convenient, and data are relatively reliable.

Description

technical field [0001] The invention relates to a method for measuring the ability of plants to resist adversity, and belongs to the technical fields of ecological environment management and restoration, primary productivity evaluation and the like. Background technique [0002] Numerous experimental studies have shown that there are many external adversity factors to plants, and the degree of influence varies. Especially in karst areas where the ecological environment is relatively fragile, the parent rock has poor soil-making ability, poor soil resources, poor water retention, less vegetation coverage, and a relatively harsh ecological environment, resulting in the inability of many agricultural economic crops to grow well in this area. As a plant suitable for karst, it can well adapt to the karst habitat, has high productivity, and can grow on the barren and representative lime soil in the karst area. These plants play an important role in the protection and restoration o...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for measuring the ability of plants to resist adversity, so as to overcome the shortcomings of the prior art in measuring plant biomass and destroying plants, and solve the problem of simple and convenient method without destroying the plants under investigation. Quick and accurate measurement of the difficult problem of plant resistance to adversity

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