温度、盐度、光照对蜈蚣藻丝状体生长的影响

摘要

To study the growth characteristics of Grateloupia filicina filamentous under different salinity , temperature , light intensity and light cycle, the weight gain and changes of G.filicinafilamentous in 5 kinds of salinity (18-46), 5 levels of temperature (10℃-30℃), 6 light intensitieies(500 lx-5500 lx) and 6 photoperiods(0L∶24D-24L∶0D) culture conditions were observed and com-pared.The results showed as follows .In the temperature experiments , the relative growth rate of G.filicina filamentous is the maxi-mum of 124.8%at 20℃;in the salinity experiments , the relative growth rate of G.filicinafilamentous is the maximum of 68.3%with 32 salinity;the light intensity experiments , 2500 lx is the best condition for the relative growth rate of G.filicina filamentous, which is the maximum of 88.2%;the light cycle experiments , 24L∶0D photoperiod is the most situable , the growth of G.filicina filamentous with the maximum growth rate of 197.3%.Thus, in the condition of 20℃, for the salinity of 32, light intensity of 2500 lx, and under 24 h light cycle , G.filicina filamentous grows best .%为了研究蜈蚣藻丝状体在不同的盐度、温度、光照强度和光照周期下的生长特征，分别观察比较了5个盐度（18～46）、5个温度（10℃～30℃）、6个光照强度（500 lx～5500 lx）和6个光照周期（0L∶24D－24L∶0D）培养条件下蜈蚣藻丝状体增重量的变化。结果表明：温度实验中以20℃条件下，蜈蚣藻丝状体的相对增重率最大，为124.8％；盐度实验中以32盐度下，蜈蚣藻丝状体的相对增重率最高，为68.3％；光照强度以2500 lx条件为最佳，蜈蚣藻丝状体的相对增重率最高，为88.2％；光照周期以24 L∶0 D全光照条件下生长最快，蜈蚣藻丝状体的相对增重率达到197.3％。由此可见，在温度为20℃，盐度为32，光照强度为2500 lx，24 h光照的条件下，蜈蚣藻丝状体长势最好，是培育蜈蚣藻的最佳条件。