Three methods of germination

Different types of flowers, due to their different seed coat structure and physiological mechanisms, have different germination durations, such as a string of red, aster, impatiens, etc., as long as timely sowing, they can quickly emerge, and some flowers need a few It takes months or even years to germinate, so artificial germination must be carried out to shorten the dormancy period of the seeds so that they germinate and bloom. Below, the author introduces several commonly used germination methods. 1. Flooding treatment For flower seeds with short dormancy and easy to germinate, such as Bauhinia, Sorbaria euphylla, and Vernonia, etc., soaking in warm water at 40°C to 60°C for 1 day to 2 days can be directly sowed. The seeds of the torch tree were first soaked in water at 90°C and allowed to cool naturally for 24 hours to soften and absorb the gelatin and waxy seed coat, and then germinate. However, attention should be paid to the treatment of seeds when immersed in water. Water, water temperature higher than 60 °C to 90 °C time should not exceed 0.5 hours to 1 hour, and then make the water temperature dropped to below 40 °C, otherwise the embryo is easy to die. 2. Low-temperature treatment Some flowers, such as forsythia, clove and some seeds of autumn sowing herbs, need to be treated at a low temperature (0°C to 10°C) for a certain period of time in order to promote maturation and break the embryo's dormancy and germination. The method is to mix seeds with sand with a humidity of 60%, that is, by hand into a mass, loosen and then spread; then put it in a plastic bag, tighten the mouth and put it in a flower pot; Into the open depth of 40 cm to 60 cm deep. In addition, the seeds can also be placed in a refrigerator at 3 °C to 5 °C for 60 days to 90 days. Seeds can also be allowed to freeze naturally in the winter through the winter and sprout in the spring. 3. Temperature-changing treatments Some flowers such as peony, peony, peony, etc., whose seeds have a dormant habit of radicles and hypocotyls, ie their radicles need to pass 25°C to 32°C for 1 to 2 months or longer The temperature stage can break the dormancy; the hypocotyl needs to be placed in the condition of 3 °C to 5 °C for 1 to 3 months to release the dormancy. For such seeds, they must be mixed with wet sand before sowing, after a certain period of high temperature, and then into a low temperature, after temperature treatment, the spring sowing can germinate quickly. However, it must be noted that during processing, it is necessary to ensure the periods of high temperature and cold periods, otherwise seedlings will be difficult to emerge after sowing.

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