8种稗草(Echinochloa)对扫茀特耐药性的比较  

Tolerance of Eight Species of Echinochloa to Pretilachlor

作　　者：王庆亚[1] 乔丽雅[1] 魏杰钢[1] 董立尧[2] 李扬汉[1] 

机构地区：[1]南京农业大学生命科学学院,江苏南京210095 [2]南京农业大学植物保护学院,江苏南京210095

出　　处：《中国水稻科学》2003年第4期383-386,共4页Chinese Journal of Rice Science

基　　金：江苏省十五科技攻关项目 (BE2 0 0 1 34 6 )

摘　　要：20 0 1年 10月采集南京地区 8种稗草 (Echinochloa)种子 ,分别用 0、0 .0 1、0 .10、1.0 0、10 .0 0mg/L扫特浸稗草种子 ,萌发后测定其形态、结构及α 淀粉酶活性。结果表明 ,无芒稗的株高、叶片及叶鞘细胞的长度、α 淀粉酶活性受扫特抑制的程度最低 ,旱稗、稗、西来稗次之 ,光头稗最高。说明不同稗草的种及变种间存在耐药性的差异 ,其中无芒稗的耐药性最强 。The seeds of eight species and varieties of barnyar dgrass were treated with pretilachlor. Differences in bud length, leaf cells le ngth, coleoptile cells length, and α-amylases activities of barnyardgrass aft er the herbicide treatment were found among eight species and varieties of barny ardgrass. Control percentage of the herbicide to Echinochloa crusgalli var . mitis was the lowest, and E. colonum was the highest among the tested barnyardgrass. It seemed th at the different species and varieties of barnyardgrass have various tolerance t o the pretilachlor.

关 键 词：稗草 扫茀特 耐药性 除草剂 稗草 

分 类 号：S481[农业科学—农药学]