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Crop Seed Inspection Protocol - Authenticity and Clarity Clarity Identification Seed quality testing is the most important basic work for seed production. The purpose is to understand the history of each pasture species and understand its characteristics and characteristics. Seed quality testing includes the following aspects: seed clarity, seed purity, seed moisture content, and seed germination rate. These have corresponding national standards. Let's take a look at the cleanliness of seeds and the detection of seed morphology.
Seed clarity test: A certain amount of seeds are weighed from the sample, and then the seeds are separated from the impurities by a blown clarity meter. The separated seeds are then placed on the seed clarity table for further separation. The separation must be based on the obvious characteristics of the seed, the various seed units in the sample were carefully examined and analyzed, and identified according to morphological characteristics, seed samples, etc. When the difference between different plant species is difficult or impossible, the genus name is filled in. All seeds of the genus are net seeds and additional instructions are provided.
Seed morphology test: 400 seeds were randomly selected from the test samples. The identification must be repeated with no more than 100 seeds per replicate. When the particle retrieval test is performed, it is generally impossible to count it artificially. Generally, the operation is performed by means of an instrument, and an optoelectronic automatic particle counting instrument can be used to operate.
According to the morphological characteristics of the seed, if necessary, it is possible to perform a grain-by-grain observation with a magnifying lens or the like, and a standard sample or an identification image and related data must be prepared. For example, rice seeds are based on grain shape, aspect ratio, size, clam shell and pod color, length of mane, density, stigma retention, etc.; barley seeds are based on grain shape, base fold, grain color, belly The base ditch, the degree of abdominal dilatation, external ridge side dorsal rib dentate and vein color, and the base of the lateral malleolus folds and depressions. The number of hairs in the spikelets, the size of the scales (slim), and the density of the hairs, etc.; the size, shape, color, luster, smoothness of the soybean seeds, the number of wax powders, and the color of the navel, etc. Size, shape, color, surface structure, and umbilicus characteristics.
Seed clarity test: A certain amount of seeds are weighed from the sample, and then the seeds are separated from the impurities by a blown clarity meter. The separated seeds are then placed on the seed clarity table for further separation. The separation must be based on the obvious characteristics of the seed, the various seed units in the sample were carefully examined and analyzed, and identified according to morphological characteristics, seed samples, etc. When the difference between different plant species is difficult or impossible, the genus name is filled in. All seeds of the genus are net seeds and additional instructions are provided.
Seed morphology test: 400 seeds were randomly selected from the test samples. The identification must be repeated with no more than 100 seeds per replicate. When the particle retrieval test is performed, it is generally impossible to count it artificially. Generally, the operation is performed by means of an instrument, and an optoelectronic automatic particle counting instrument can be used to operate.
According to the morphological characteristics of the seed, if necessary, it is possible to perform a grain-by-grain observation with a magnifying lens or the like, and a standard sample or an identification image and related data must be prepared. For example, rice seeds are based on grain shape, aspect ratio, size, clam shell and pod color, length of mane, density, stigma retention, etc.; barley seeds are based on grain shape, base fold, grain color, belly The base ditch, the degree of abdominal dilatation, external ridge side dorsal rib dentate and vein color, and the base of the lateral malleolus folds and depressions. The number of hairs in the spikelets, the size of the scales (slim), and the density of the hairs, etc.; the size, shape, color, luster, smoothness of the soybean seeds, the number of wax powders, and the color of the navel, etc. Size, shape, color, surface structure, and umbilicus characteristics.