A method for rapid detection of vegetable seed germination rate

Abstract

The invention discloses a method for rapidly detecting the germination rate of vegetable seeds. Its steps are as follows: 1) Place the vegetable seed sample in an airtight container and let it stand for 30-60 minutes; 2) After the headspace gas reaches equilibrium, the headspace sample is introduced into the sensor array reaction chamber for sampling, and the sampling time is 60-90s , the sensor array reacts with the headspace gas to obtain a response signal; 3) Extract the 60s electronic nose signal as the original data, perform feature selection and feature value extraction on the feature matrix of the original data; use principal component analysis and linear discriminant analysis to evaluate the seeds Germination rate grade; 4) Using the original data and the above-mentioned processed data as eigenvalues, use BP neural network and support vector machine recognition mode to establish the correlation between the sensor response signal and the seed germination rate, and then evaluate the seed germination rate. The invention has the advantages of simple operation, greatly improved reliability and repeatability, and improved detection efficiency.

Description

technical field [0001] The invention relates to a method for rapidly detecting the germination rate of vegetable seeds. Background technique [0002] Seed inspection is an important measure to detect the production of high-quality seeds, avoid sowing inferior seeds, and ensure a good agricultural harvest. The germination rate of seeds is an important indicator in seed inspection. Determination of seed germination rate is often carried out by counting methods to understand its maximum germination potential and evaluate the seed value of seeds. This method has high accuracy and is commonly used in the standard inspection of grain seeds, but the inspection is time-consuming, laborious and complicated. If it is urgent to know the germination status of seeds during seed production, processing, purchase, storage or transportation, it is no longer applicable, especially for cereals. For seeds with a long dormancy period such as cereals and some beans, if the normal germination tes...

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Problems solved by technology

However, these methods are carried out in the laboratory and need to be completed with the help of related instruments, reagents, etc., and the accurate germination rate cannot be obtained in a short period of time.

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