水绵对3种沉水植物的化感作用研究  

Allelopathy of Spirogyra communis on Three Submerged Plants

作　　者：马剑敏[1] 马顷[1] 苏秀燕[1] 王程丽[1] 董文静[1] 代克岩[1] 郭萌[1] 

机构地区：[1]河南师范大学生命科学学院,河南新乡453007

出　　处：《河南农业科学》2011年第9期70-73,共4页Journal of Henan Agricultural Sciences

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07106-002-004);河南省科技攻关计划(0624440039)

摘　　要：研究了水绵(Spirogyra communis)化感作用对菹草(Potamogeton crispu)、狐尾藻(Myrio-phyllum spicatum)、伊乐藻(Elodea nuttallii)3种沉水植物叶绿素含量、部分抗氧化酶活性和相对生长速率的影响。结果表明:在共培养条件下,处理组3种受试沉水植物的叶绿素a、b含量均明显降低,降幅最大的是伊乐藻,最小的是狐尾藻;3种植物的过氧化物酶(POD)、过氧化氢酶(CAT)、超氧化物歧化酶(SOD)的活性明显高于对照组(无水绵共培养组);在生物量的增长上,3种沉水植物的相对生长率均低于对照组,其中降幅最大的是伊乐藻,最小的是狐尾藻。总的来看,对水绵的化感胁迫,伊乐藻受到的抑制最大,狐尾藻受到的抑制最小。The influence of allelopathy of Spirogyra communis was investigated on the chlorophyll content, the activity of some antioxidant enzymes and the relative growth rate of three submerged plants,Potamogeton crispu, Myriophyllum spicatum and Elodea nuttallii. The results indicated that under co-culture condition, the content of chlorophyll a and chlorophyll b decreased obviously in the three submerged plants, decreasing the largest in E. nuttallii and the least in M. spicatum. The activities of POD,CAT and SOD were obviously higher in the three submerged macrophytes than those o[ the control group. The relative growth rate of the three submerged plants was lower than the control group. E. nuttallii had the biggest drop of the relative growth rate,while M. spicatum was the smallest one. On the whole,the influence of S. comrnunis allelopathy was the greatest on E. nuttallii and the lowest on M. spicatum.

关 键 词：丝状藻 水绵 沉水植物 化感作用 叶绿素含量 抗氧化酶 相对生长率 

分 类 号：Q17[生物学—水生生物学] X17[生物学—普通生物学]