鸭类摄食对海三棱藨草种子萌发的影响  

Effects of ducks' ingestion on seed germination of bulrush (Scirpus mariqueter).

作　　者：赵雨云[1] 马志军[1] 李博[1] 陈家宽[1] 

机构地区：[1]复旦大学生物多样性科学研究所生物多样性和生态工程教育部重点实验室,上海200433

出　　处：《生态学杂志》2003年第4期82-85,共4页Chinese Journal of Ecology

基　　金：世界自然基金会 (WWF) BpConservationProgramme (NO .14 17);上海市博士后基金资助项目

摘　　要：研究了鸭类的消化作用对海三棱草 (Scirpusmariqueter)萌发速度和萌发率的影响。模拟消化道的环境 (酸性条件 pH =2 ,高温T =4 2℃ ,和消化道对种子的研磨作用 ) ,分别对海三棱草的种子进行了处理 ,并与自然环境下鸭类未取食的种子及鸭类粪便中采集的种子进行比较。结果表明 ,研磨作用能够显著加快种子的萌发速度 ,而酸性环境和高温条件减缓了种子的萌发速度。鸭类的消化作用对海三棱草种子的萌发率没有显著影响。Laboratory experiments were conducted to examine the effects of ducks' digestion on the germination of seeds of bulrush ( Scirpus mariqueter ). The seeds were processed with acidic environment (pH=2), high temperature (42℃) and rubbing to simulate the environment in the alimentary tract of ducks. Results showed that the grind increased the germination rate of seeds significantly, while the acidic environment and high temperature reduced the germination rate of seeds. The ducks' ingestion had no significant effect on the germination of seeds, but was beneficial to the spread of seeds.

关 键 词：鸭类 摄食 海三棱蔗草 种子萌发 

分 类 号：Q948[生物学—植物学]