摘要
采用川蔓藻植株体与普通小球藻在再生水中共培养和使用再生水种植川蔓藻的种植水纯培养普通小球藻的方法,在实验室条件下研究了在滨海再生水河道中生长的沉水植物川蔓藻对小球藻的化感作用．结果表明,川蔓藻对普通小球藻具有显著的抑制作用．在共培养实验中,96 h的抑制率为88．86％;在种植水纯培养实验中,96 h的抑制率为48．91％．川蔓藻的种植水对普通小球藻的化感作用系数平均为-0．2448．川蔓藻的叶和根的种植水对普通小球藻均有抑制效果,96 h的抑制率为叶34．71％,根14．12％;平均的化感作用系数叶为-0．1317,根为-0．0901;川蔓藻的根和叶均能释放化感物质,但抑制小球藻的化感物质主要通过叶释放．
It is reported in this paper that the results of allolepathy test of Ruppia maritima L. on Chlorella vulgaris with co-culture in reclaimed wastewater and pure culture in the filtrate of liquious cultured the macrophyte. Chlorella vulgaris co-cultivated with Ruppia maritima in reclaimed wastewater indicated that Ruppia maritima had remarkable inhibition on ChloreUa vulgaris, On co-culture experiment, at 96 h inhibition ratio was 88.86% ; the competition of the nutrients had contribution to the growth which inhibited the ChloreUa vulgaris. On pure culture experiment with the filtrate of liquious cultured entire plant, leaves and roots of Ruppia maritima, the results of pure culture was inhibition activities on the growth of ChloreUa vulgaris with the filtrate of entire plant, leaves and roots of Ruppia maritima, at 96 h inhibition ratio of leaves and roots were 48.91%, 34.71% and 14.12%, the allolepathic effect of equal coefficient （Et） of plant, leaves and roots were -0. 2448, -0. 1317 and -0. 0901. The allolepathy parameter Et of Ruppia maritime on ChloreUa vulgaris was derived from the modified Logistic equation. Leaves and roots of Ruppia maritima were capable of releasing allelopathically active compounds, but the inhibitory activity of allelopathically active compounds mainly came from the leaves tissue.
出处
《湖泊科学》
EI
CAS
CSCD
北大核心
2007年第3期321-325,共5页
Journal of Lake Sciences
基金
国家863攻关课题"天津市滨海新区水环境质量改善技术与综合示范"(2003AA601030)资助.
关键词
川蔓藻
普通小球藻
化感作用
再生水
Ruppia maritima
ChloreUa vulgaris
allelopathy
reclaimed wastewater
