Method for evaluating comprehensive stress resistance of plants by using photosynthetic reduction curve of detached leaves

CN116381140BActive Publication Date: 2026-05-12UNIV OF JINAN +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF JINAN
Filing Date
2023-03-14
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing methods for testing the overall stress resistance of plants are time-consuming, labor-intensive, and costly, making it difficult to efficiently evaluate a plant's ability to resist harsh environments.

Method used

By measuring the photosynthetic rate reduction curve of detached leaves, the overall stress resistance of plants is evaluated using the parameters of the photosynthetic rate reduction curve function, including parameters such as net photosynthetic rate, Euler number, constant α, time τ, respiration rate, and residual photosynthetic rate. These parameters are simplified to the photosynthetic rate reduction curve function PN=e-αt[PA+PAcos(ωt+τ)](1+αt)+PR(1+βt) or PN=e-αt[PA+PAcos(ωt-τ)](1+βt), and the plant stress resistance is evaluated using analytical parameters.

Benefits of technology

It enables rapid and low-cost evaluation of plant comprehensive stress resistance, improves efficiency, saves manpower and resources, and simplifies the testing process.

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Abstract

The application discloses a method for evaluating comprehensive stress resistance of plants by using photosynthetic reduction curve of leaves in vitro, wherein the photosynthetic rate of leaves of a certain variety is determined first, and when the photosynthetic rate reaches saturation, the leaves are cut off, and the photosynthesis is rapidly reduced along with rapid water loss of the leaves; the analytic parameters are obtained by determining the photosynthetic reduction curve of the leaves in vitro in a short time, and the comprehensive stress resistance of the variety is evaluated by using the parameters. If the parameters of the curve show that the photosynthesis of leaves of one variety is less reduced than that of leaves of another variety, it is indicated that the variety has higher comprehensive stress resistance. Compared with traditional statistical methods, the method has higher efficiency and saves manpower and material resources.
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