Germination rate is one of the most concerned issues for farmers when they purchase corn seeds. Now we introduce a simple and quick method to test the germination rate:
Take a small amount of seeds randomly from the seed bag, pick out the damaged grains, and randomly take 200 seeds and divide into 2 pieces. Each piece of 100 pieces is soaked in water of 30°C for 3-4 hours, then remove and remove the stalks with tweezers ( The crown of the seed), while torn off the seed coat of the embryo. Put two new towels in boiling water and boil them for half an hour. After cooling, remove excess water and flatten it on a clean tabletop. Put the two treated seeds evenly on the half towel. Leave 4 cm on both sides. Keep a distance equal to the seed size between the seeds and the seeds. When the seeds are aligned and the seeds are aligned, fold the other half of the towel and cover the aligned seeds. Put a chopstick as a shaft, and then roll the towel into a loose stick to facilitate ventilation. The ends of the towel roll are tied with ropes. The thermos bottle is filled with half a bottle of water at 30°C. The towel is hung in the upper half of the thermos and the thermos bottle is covered with insulation. Replace the 30°C water every 6 hours. When the length of the radicle is about equal to the length of the seed and the length of the germ is about half of the length of the seed, germination occurs. After 48 hours, germination percentage can be calculated by taking seeds that have normal germination.
The commercially-applied seeds are best tested using soil germination tests to avoid the inhibitory effect of the coating material on germination. If the method of sprouting with a towel roll is still used, the coated seeds must first be washed thoroughly with running water to minimize the inhibitory effect of the coating material on germination, and then the germination test should be performed. Since some pesticide components are still inevitably left on the seeds, sprouting will be slower than uncoated seeds. Therefore, the calculation of the germination rate should be delayed from the uncoated seeds.
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