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A brief analysis of the identification method of new and old corn
First, the difference between morphology and new seeds, Chen seeds after long storage and drying, seed self-breath nutrient consumption, often dark color, no luster. Looking at the seed embryos again, the new seed embryos are soft, and their embryos have less keratin and less silt by hand, while Chen seeds have a harder embryo, less keratin in the embryo, and more silt. Observe whether there are insects or eggs. Stir the seeds by hand to see if there is any powder on the hands, such as powder or wormholes or eggs, which proves to be Chen seeds and vice versa. Second, the physiological method of seed germination test, check the seed germination rate and germination potential, the new seed germination rate is high, germ thick, and Chen seed germination rate is low, germ fine. Third, the chemical method used 1:60 times the red ink solution soaked the seeds for 15 minutes, observed the degree of embryonic staining, not stained or lighter than the new seeds, darker stained Chen seeds.