不同处理对蓖齿眼子菜(Potamogeton pectinatus L.)种子萌发率的影响  

Influence of Different Treatments on Seed Germination Rates of Potamogeton pectinatus L.

作　　者：陈开宁[1] 李文朝[1] 潘继征[1] 

机构地区：[1]中国科学院南京地理与湖泊研究所,南京210008

出　　处：《湖泊科学》2005年第3期237-242,共6页Journal of Lake Sciences

基　　金：973计划"湖泊富营养化过程和蓝藻水华暴发机理研究"(2002CB412307)科技部重大科技专项"太湖水污染控制与水体修复"课题(2002AA601013)"滇池蓝藻水华污染控制技术研究"课题(K99-05-35-01-02)联合资助

摘　　要：在植物立地和室内不同处理条件下,研究了滇池地方居群的蓖齿眼子菜(PotamogetonpectinatusL.)种子的发芽率及幼苗生长.结果表明,自然状态下,蓖齿眼子菜种子发芽率仅为5.3%;切开种皮、较高温度的变温以及层积处理可以极显著地提高种子的发芽率,模拟动物消化系统的酸处理也可以显著地提高发芽率,而用恒定的高温、KON3、硫脲和GA处理对发芽率影响不大.此外,根据试验结果,提出了利用蓖齿眼子菜种子恢复湖泊沉水植被的措施.Seed germination rates of Potamogeton pectinatus were studied under the condition of nature in plants stands and different treatments in the laboratory. The results showed that seed germination rates of P. pectinatus were greatly increased by the treatment of cutting seed coat, ahemating temperature, stratification or acid with 0.5mg/L H2SO4. The treatment with KNO3 , GA and thiourea （ H2NCSNH2 ） cannot markedly increase seed germination rate. In addition, the ways of culturing P. pectinatus for restoration of aquatic vegetation were put forward according to the results of these experiments.

关 键 词：蓖齿眼子菜 种子发芽率 沉水植被恢复 种子萌发率 不同处理 处理条件 幼苗生长 自然状态 层积处理 消化系统 

分 类 号：Q945[生物学—植物学]