甜菜种子萌发初始阶段吸水规律研究

Study on Water Absorption Laws of Sugar Beet Seed Germination

为筛选抗逆性较强的高活力甜菜品种,本试验在2种温度(25和30℃)条件下,以3种不同粒重的甜菜品种为材料,对种子萌发初期的吸水量、吸水速率、发芽率及发芽指数等指标进行测定.结果表明:3个不同品种在不同温度处理条件下吸水量、吸收速率的增长趋势都是先快后慢最后趋于平缓,但与种子的粒重相关性不大;不同温度对种子的发芽率、发芽指数影响较大,高温会影响种子的发芽率,抑制种子活力;在不同品种间,粒重的大小对于发芽率存在一定正相关.

In order to select high vitality beet varieties with high stress resistance,the water absorption,water absorption rate,germination rate and germination index of two temperatures(25 and 30).The resuls show that the growth trend of water absorption and absorption rate in three different varieties is fast and slow,but the grain weight is small;the influence on the germination rate and the grain weight of the seeds.