摘要
在不同的光温条件下，研究琼氏圆筛藻细胞分裂的昼夜变化。实验表明，该藻培养种群每昼夜形成三次分裂相，其细胞分裂呈现在光期快在暗期慢的特点，而分裂相的大小和定时则随光温条件的变化而变化。在温度27℃，光强度8000Lx和光暗周期16：8h的条件下，该藻呈最大日增殖率（μ值为3．02次／d），显示琼氏圆筛藻为暖水性的生态特征。
The effects of light and temperature on diel periodicity of cell division of Coscinodiscus jonesianus were carried out in laboratory condition. Results showed that there are three division phases each day. cell division quickly in light cycle and slowly in dark cycle. Results also indicated that the phase and the timing of cell division changed with the variation of light and temperature. The highest growth rate of C.jonesianus is 3. 02/day when cultured in 27℃,8000L, and light/dark cycle of 16:8,which suggested that C jonesianus belongs to a warm temperature species.
出处
《集美大学学报（自然科学版）》
CAS
北大核心
1998年第3期126-131,共6页
Journal of Jimei University：Natural Science
关键词
琼氏圆筛藻
细胞分裂
光暗周期
硅藻
光温效应
Coscinodiscus jonesianus
Cell division
Light-dark cycles
Growth rate
