顽拗性种子——中国石蒜种子的贮藏特性研究

Study on Seed Germination and Storage Characteristics of Lycoris Chinensis

为了探讨适合于中国石蒜种子贮藏的最佳方法及种子萌芽的最佳条件,将新鲜中国石蒜种子置于-80℃、-20℃、-4℃冰箱及硅胶中1个月,测定其发芽情况。结果表明,新鲜中国石蒜不耐贮藏,在-80℃、-20℃,硅胶干燥贮藏1个月后很快失去发芽能;室温(10-30℃)湿沙层积,-4℃湿沙贮藏,均可以保持其生活力。中国石蒜种子脱水敏感,随着种子含水量的下降,种子的生活力也随之降低,临界含水量为51.10%,低于临界含水量其生活力迅速下降。中国石蒜种子属于低度顽拗性种子。

The purpose of this research was to explore germinating conditions and appropriate storage characteristics of Lycoris Chinensis. Mature seeds of Lycoris chinensis were separately placed in - 80 ℃, - 20 ℃, -4 ℃ plastic bags, wet sand in the room temperature, silica gel in the room temperature for 30 days, and measured seed germination. The result indicated that the seed of Lycoris chinensis could not bear - 80 ℃, -20 ℃, and quickly lost germination ability stored in silica gel drying one month. But in wet sand, seed of Lycoris Chinensis could germinate in room temperature （10 to 30 ℃ ） or -4 ℃ condition. The study indicated that Lycoris chinensis seed was sensitive to dehydration, seed germination ability decreased with the decreasing of water in seed, and the critical water content was 51.1%, seed germination ability could decrease quickly when seed water content lower than 51.10%.