储藏温度对9种内蒙古半干旱草地植物种子萌发的影响

Effect of Storage Temperature on Seed Germination of 9 Species in an Inner-Mongolian Semiarid Steppe

以内蒙古半干旱草地9种植物的种子作为研究对象,采用培养皿纸上法进行萌发实验,调查超低温、低温、室温储藏方式下每种植物的种子萌发率和萌发开始时间、峰值时间、持续时间.结果表明:超低温和低温储存下的种子萌发率比室温保存的种子萌发率分别降低了16.7%和15.2%.室温储藏的种子与其他两种储藏方式相比,萌发开始时间和峰值时间更早,萌发持续时间更短.

The experiment was conducted to investigated the effect of storage temperature on seed germina-tion rate and germination time of 9 grassland plants/This study selected seed of 9 species in semiarid steppe as materials, and was conducted with culture vessel-paper method in the experimental lab. Pa-rameters including seed germination rate, germination onset timc germination peak time, and germination du-ration for seed of each species which was stored under ultralow, low,and room temperature werrespectively. The result indicatcdermination rate of the seed stored under ultralow and low temperature was 16.7% and 15.2% lower than it sored under room temperature. Comparing with the seed stored under ultralow and low temperature,the seed stored under room temperature has earlier germination onsshorter germination duration/The study has proved that storage temperature can affect seed germination, andimplicated that room temperature storage is the best storage method for the seed of the semiarid steppe.