江西农业大学学报2015，Vol.37Issue(5)：843-848,858,7.DOI:10.13836/j.jjau.2015128
草甘膦对杉木种子萌发及幼苗生长的毒性效应
Toxic Effect of Glyphosate on Seed Germination and Seedling Growth of Chinese Fir
摘要
Abstract
Glyphosate is one of the most widely used herbicides in forestry and agricultural production,but it may affect the non-target organisms in soils.Therefore,a laboratory experiment was conducted to investigate the effects of glyphosate on seed germination and seedling growth of Chinese fir which is one of the important fast-growing species in the south and assess the ecological risk of glyphosate to artificial forest.The results showed that,the seed germination rate as well as the root length,stem length,leaf length and fresh weight of seedlings decreased significantly with the increase of glyphosate.The root length was more sensitive to glypho-sate than other indexes.In addition,with the increase of glyphosate,the activity of SOD and chlorophyll content in Chinese fir seedlings decreased,while the activity of CAT and MDA content increased.The activity of POD presented earlier increased and then declined.There is an inhibitory effect of glyphosate on Chinese fir seeds and seedlings,which led to antioxidant enzyme dysfunction,oxidative damage of cell and declined chlorophyll synthesis.关键词
草甘膦/杉木种子/发芽率/抗氧化酶/叶绿素Key words
glyphosate/Chinese fir/germination rate/antioxidant enzyme/chlorophyll分类
农业科技引用本文复制引用
林静雯,李莹,罗洁文,周垂帆,刘爱琴..草甘膦对杉木种子萌发及幼苗生长的毒性效应[J].江西农业大学学报,2015,37(5):843-848,858,7.基金项目
国家自然科学基金青年科学基金项目(31400465) （31400465）
