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生菜营养物质丰富,是华南地区食用的主要蔬菜之一。生菜种子萌发最适温度为15～20℃,当温度超过25℃时,生菜种子萌发则受到抑制,温度高于35℃时几乎没有种子能发芽。华南地区常年温度较高,高温导致的种子休眠已成为影响生菜安全生产重要因素。因此探索克服生菜种子高温休眠方法对保障夏季生菜正常供应、促进生菜周年生产具有重要的现实意义。
Lettuce rich in nutrients, is one of the main vegetables eaten in southern China. The optimal temperature for the germination of lettuce seeds was 15 ~ 20 ℃. When the temperature exceeded 25 ℃, the germination of lettuce seeds was inhibited. When the temperature was above 35 ℃, almost no seeds could germinate. South China perennial high temperature, high temperature seed dormancy has become an important factor affecting the safety of lettuce. Therefore, exploring ways to overcome the high-temperature dormancy of lettuce seeds is of great practical significance to ensure the normal supply of summer lettuce and promote the annual production of lettuce.