摘要
以花椰菜种子为试材,研究了5个乙酰甲胺磷胁迫浓度(0.00%、0.03%、0.06%、0.09%、0.12%)对花椰菜种子萌发率和幼苗叶片中叶绿素含量及其幼苗根长、苗高、侧根数目、幼苗鲜重和干重的影响,以期探究已酰甲胺磷农药对植物生长的影响机制。结果表明:随乙酰甲胺磷浓度的增大,花椰菜种子发芽速度减慢,种子萌发率呈下降趋势;乙酰甲胺磷对花椰菜幼苗的苗高、根的生长以及幼苗鲜重和干重的增加、幼苗叶片中的叶绿素含量均具有显著的抑制效应。
Taking the seeds of Brassica oleracea var.botrytis as materials,the effect of different concentrations of acephate(0.00%,0.03%,0.06%,0.09%,0.12%) on the seed germination percentage,chlorophyll content and seedling growth indexes(root length,seedling height,the number of lateral roots,seedling fresh and dry weight,) of Brassica oleracea var.botrytis were studied,in order to explore the mechanism of plant growth under the influence of pesticides.The results showed that the seed germination speed and germination percentage reduced with acephate concentration increased;acephate had inhibition on seedling height,root length,seedling fresh and dry weight,Chla,Chlb,Chl contents and Chla/chlb ratio.
出处
《北方园艺》
CAS
北大核心
2013年第8期127-129,共3页
Northern Horticulture
基金
国家自然科学基金资助项目(30760040)
楚雄师范学院教学改革立项研究资助项目(1008)
楚雄师范学院院级学术骨干资助项目
云南省高校科技创新团队支持计划资助项目
云南省重点建设学科资助项目
楚雄师范学院重点学科建设资助项目(05YJJSXK03)
云南省应用基础研究计划资助项目(2011FB089)
关键词
花椰菜
乙酰甲胺磷
种子萌发率
幼苗生长
Brassica oleracea var. botrytis
acephate
seed germination percentage
seedling growth
作者简介
李天星(1968-),男,彝族,云南永仁人,博士,副教授,现主要从事植物生理生态学和景观生态学及生物学的教学与研究工作。