玉米田耐性生物型稗草对烟嘧磺隆的耐药性机制  

Mechanism of Tolerance to Nicosulfuron in Tolerant Biotype of Echinochloa crusgalli(L.) Beauv. from Maize Fields

作　　者：宋伟丰 王星茗[1] 蒋希峰 陶波[1] 

机构地区：[1]东北农业大学农学院,哈尔滨150030 [2]黑龙江省农业科学院,哈尔滨150086

出　　处：《农药》2018年第3期219-221,共3页Agrochemicals

基　　金：国家重点研发计划(201303022)

摘　　要：[目的]明确玉米田稗草对烟嘧磺隆的耐药性机制。[方法]采用盆栽试验,测定了烟嘧磺隆对耐性生物型稗草体内苯丙氨酸解氨酶(PAL)、过氧化氢酶(CAT)、超氧化物歧化酶(SOD)和抗坏血酸过氧化酶(APX)活性的影响。[结果]玉米田耐药性稗草在烟嘧磺隆胁迫下,PAL、CAT和APX活性增强,而SOD活性降低。[结论]稗草对烟嘧磺隆的耐药性与几种防御酶的活性有直接关系。[Aims] The study aimed to determine the tolerance mechanism ofEchinochloa crusgalli（L.） to nicosulfuron in maize. [Methods] The enzyme assays of PAL, CAT, SOD and APX in tolerant biotypc of E. crusgalli（L.） were conducted by pot experiment. [Results] Under the stress of nicosulfuron, the activities of PAL, CAT and APX of tolerant E. crusgalli （L.） was enhanced and SOD activity was decreased. [Conclusions] There is a direct relationship between the activity of E. crusgalli（L.） on nicosulfuron resistance and several defense enzymes.

关 键 词：稗草 烟嘧磺隆 耐药性 防御酶 

分 类 号：S482.4[农业科学—农药学]