Journal of Changshu Institute of Technology2012，Vol.26Issue(2)：71-75,5.
几种生态因子对菊科外来入侵植物春飞蓬种子萌发的影响
The Influences of Some Ecological Factors on the Seed Germination of Erigeron philadelphicus, an Invasine Alien Plant in Asteraceae
摘要
Abstract
Under the laboratory conditions, it is studied that the influences of light, pH, osmotic potential and salin- ity on the seed germination of Erigeron philadelphicus, an invasine alien plant in Asteraceae. The result showed that there were no significant differences in the seed germination rates among different light lengths of 0L/24D, 8L/ 16D, 12L/12D and 16L/8D. The seed germination rates were all over 0.30 under pH6 to pH8, and were greatest for pH7 （0.51±0.05）, but there was no seed germination either in the acidic environment of pH4 and pH5 or in the al-kaline environment of pH9 and pill0. Seed germination was sensitive to osmotic potentials and the germination rates decreased significantly when osmotic potentials were -0.05 Mpa or lower than it. Seeds could germinate in moderate NaC1 solution concentrations （0.05mol/L to 0.10mol/L）. Almost no seeds could germinate in a NaC1 solu-tion at a concentration of 0.15mol/L or higher than it.关键词
春飞蓬/外来入侵植物/种子萌发/菊科/生态因子Key words
Erigeron philadelphicus/invasive alien plants/seed germination/Asteraceae/ecological factor分类
农业科技引用本文复制引用
韩琪,郝建华,胡花,李家瑞,刘倩,戚静敏,邓铭,周蓓蓓..几种生态因子对菊科外来入侵植物春飞蓬种子萌发的影响[J].Journal of Changshu Institute of Technology,2012,26(2):71-75,5.基金项目
苏州市科技计划项目“苏州市外来农业有害生物的风险评估,早期预警和防除” （）
常熟理工学院2011年度大学生实践创新训练计划项目“各种生态因子对一年蓬和春一年蓬的种子萌发的影响” （）
常熟理工学院毕业论文重点团队课题“几个入侵植物功能性状的近缘种比较研究” （）
