摘要
以小球藻和铜绿微囊藻为研究对象,设置不同的光照(2 000、4 000、6 000、8 000、10 000 lx),测量小球藻和铜绿微囊藻的藻细胞数量、吸光度值(OD_(680))、叶绿素荧光(F_v/F_m),并计算两种藻的比生长速率.结果表明,小球藻最佳光照强度为6 000 lx,在光照强度6 000 lx之后随着光照强度增加,小球藻生长受抑制明显,铜绿微囊藻最佳光照强度为4 000 lx,说明铜绿微囊藻较耐受弱光,而小球藻更耐强光.
Chlorella vulgaris and Microcystis aeruginosa were taken as the research objects. Different illumination(2 000, 4 000, 6 000, 8 000, 10 000 lx) was set. The cell number, absorbance value(OD_(680)) and chlorophyll fluorescence(F_v/F_m) of Chlorella vulgaris and Microcystis aeruginosa were measured, and the specific growth rates of the two algae were calculated. The results showed that the optimum illumination intensity of Chlorella was 6 000 lx. After the illumination intensity was 6 000 lx, the growth of Chlorella was inhibited obviously with the increase of illumination intensity. The optimum illumination intensity of Microcystis aeruginosa was 4 000 lx, which indicated that Microcystis aeruginosa was more tolerant to low light than Chlorella.
引文
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