农业环境科学学报2012，Vol.31Issue(2)：265-269,5.
镉-苯并(a)芘单一及复合污染对小麦种子萌发的影响
Effect of Cadmium - benzo(a)pyrene Single and Combined Pollution on Wheat Seed Germination
摘要
Abstract
Eco-toxicological tests were carried out to investigate the effect of single/combined pollution of cadmium(Cd) and benzo(a) pyrene(BaP)on germination of wheat seeds. Seminal root length, shoot elongation and germination rate of wheat were chosen as the indexes to indicate the ecological effects, and to screen sensitive indicators of toxicity diagnosis. The results showed that the three indexes all had changes at different degree under Cd and BaP single/combined pollution. Wheat root length and shoot elongation were both significantly longer than those of the control upon single Cd exposure, showing a stimulation effect, while under the single BaP pollution, these two indexes were significantly inhibited. Cd-BaP combined pollution stimulated the growth of wheat. Early growth of wheat seed treated with BaP was slower than that with Cd, which indicated BaP had more serious toxic effect on wheat seed. The joint toxicity of the interaction two pollutants was antagonistic to seed germination within the tested concentrations of this experiment. Among the three indexes, wheat germination rate showed the weakest indicative effect in response to Cd and BaP pollution in soil.关键词
镉/苯并(a)芘/复合污染/种子萌发Key words
cadmium/ benzo( a )pyrene/ combined pollution/ seed germination分类
资源环境引用本文复制引用
刘垚,张薇,刘鸣达..镉-苯并(a)芘单一及复合污染对小麦种子萌发的影响[J].农业环境科学学报,2012,31(2):265-269,5.基金项目
沈阳农业大学青年教师科研基金资助项目 （）
