Effect of Low Temperature Treatment on Germination of Herbage Seeds
The germination ability of wild forage seed is affected by various environmental factors, among which temperature is one of the main factors. The germination ability of the seed needs to be revealed by several parameters, such as seed germination rate and seed germination potential. The germination rate (%) = the number of germinated seeds in the specified date and the number of seeds for the test × 100. Germination potential (%) = grain number of germinated seeds within the specified number of days ÷ grain number of seeds supplied × 100.
Then the seeds were treated with low temperature. One of the temperature control, we can achieve through the seed germination box. The seed germination box is a kind of incubator that simulates the natural environment, and can independently set the temperature, humidity, light intensity, and light time. Therefore, to a certain extent, it can meet the needs of various researches, and is sometimes called a precision seed germination box. Because of the high accuracy of the parameters it controls. This article also needs to use this kind of instrument.
The experimental results showed that the low-temperature treatment increased the germination rate of the two grass seeds in different degrees, and also accelerated the initial germination time of the two grass seeds. For Stipa grandis, the seed germination potential at low temperature and room temperature germination both reflect the trend of initial germination and eventually slow down and slow down, and the effect of temperature treatment on its germination duration is not obvious. However, the germination potential of S. krbuta at low temperature and normal temperature germination reflected the opposite trend. After the low-temperature treatment, the seed germination potential gradually became slower, the germination duration was longer, and the germination potential of the seeds germinating at room temperature gradually became faster. Short period. Some perennial herbs (such as pasture) have vernalization, and low temperatures have a vernalization effect on their germination and flowering. At the same time, the research also shows that although artificially cultivated pasture provides good planting and post-stage management conditions, if the forage seed is not subjected to pre-seedling treatment, the germination rate of pasture is relatively low. The research results provide reference for promoting the cultivation of pasture in the north.
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