The germination rate of black soybean seeds is not up to standard after inspection

(Correspondent Li Fangfang) In agriculture, black beans are classified as food crop soybeans. There are two main types of black beans, one is black-skinned yellow kernel, which means black seed coat and yellow cotyledon, and the other is black-skinned green kernel, which means black seed coat. , Cotyledon green. The nutritional value of the two is not much different, both can be used as miscellaneous grains, and both have medicinal value. There is no strict distinction between medicinal black soybeans and edible black soybeans as miscellaneous grains. Generally, black soybeans with black skin and yellow kernels are used in traditional Chinese medicine.

There are national standards for the germination rate of seeds. Inferior seeds refer to those whose quality (purity, clarity, germination, water content, etc.) is lower than the national standards for seeding. Recently, Xinjiang Zhenguanda Agricultural Science and Technology Co., Ltd. accepted a case concerning the inspection of whether black soybean seeds meet the standard. After the company accepted the entrustment, on October 12, the appraiser Gao Shengliang and Wen Jiangrong were assigned to form an appraisal team to appraise the quality of the two packs of black soybean seeds sent by the entrusting party.

Gao Shengliang, a senior agronomist of the company, stated that in accordance with the provisions of GB/T3543.6-1995 "Crop Seed Inspection Regulations-Moisture Determination", we carried out moisture testing on the samples sent by the entrusting party, and adopted the 8-hour low temperature drying method. According to GB/T3543.3-1995 "Crop Seed Inspection Regulations-Clarity Analysis", we conducted a cleanliness test on the samples submitted by the client for inspection, and the whole sample method was used to test the purity of 99.4%; according to GB /T3543.4-1995 "Crop Seed Inspection Regulations-Germination Test", we test the germination rate of the samples sent by the entrusting party, and the test has 4 repetitions, each with 100 seeds. The germination bed is a sand bed with a constant temperature of 25°C. The bed placement date was October 13, and the germination test was carried out to the fifth day as the peak period of germination, and until the end of germination on October 25, a total of 12 days. The germination rates of the four repeats were 71%, 80%, 77%, 84%, with an average of 78%.

Agronomist Wen Jiangrong introduced: The black beans submitted by the client for inspection are black-skinned green kernels, which are a type of black beans. Through the inspection, the germination rate is 78%, the moisture content is 6.7%, and the clarity is 99.4%. According to the quality standards of soybean seeds in the national standard GB 4404.2-2010 "Food Crop Seeds Part 2 Beans", the germination rate of soybean seeds should be no less than 85%, the clarity should not be less than 99.0%, and the moisture content should be no more than 12.0 %, the germination rate of the sample sent by the entrusting party does not meet the requirements of the national standard, it is a substandard seed

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