石蝉草乙醇提取物除草活性初探  

Herbicidal activity of the ethanol extracts from Peperomia dindygulensis

作　　者：闫超[1,2] 陈敏 周颖 刘霞[1,2] 叶火春 张静[1,2] 冯岗 YAN Chao;CHEN Min;ZHOU Ying;LIU Xia;YE Huochun;ZHANG Jing;FENG Gang(Institute of Environment and Plant Protection,Chinese Academy of Tropical Agricultural Sciences, Haikou　570100,China;Key Laboratory of Integrated Pest Management on Tropical Crops,Ministry of Agriculture,Haikou　570100,China;Institute of Tropical Agriculture and Forestry,Hainan University, Haikou　570100,China;Heilongjiang Bayi Agricultural University,Daqing　163319,China)

机构地区：[1]中国热带农业科学院环境与植物保护研究所,海口570100 [2]农业部热带作物有害生物综合治理重点实验室,海口570100 [3]海南大学热带农林学院,海口570100 [4]黑龙江八一农垦大学,大庆163319

出　　处：《植物保护》2018年第2期199-203,共5页Plant Protection

基　　金：国家重点研发计划(SQ2017ZY060121);中央级公益性科研院所基本科研业务费(2013hzs1J002);海南省重点研发项目(SQ2017SHFZ0023)

摘　　要：为探明石蝉草是否具有除草活性,本研究采用小杯法和盆栽试验法测定石蝉草乙醇提取物对13种植物的除草活性。结果表明,石蝉草乙醇提取物对13种植物的根茎生长均有抑制作用,对苘麻和稗草根长的抑制中浓度IC50分别为0.73和0.80mg/mL,对茎长的IC50分别为0.77和0.89mg/mL;盆栽试验表明,5mg/mL浓度对稗草和苘麻7d的防治效果分别为90.73%和82.02%,与对照药剂癸酸无显著性差异。研究结果为研发新型除草剂提供了新思路。The herbicidal activities of the ethanol extracts from Peperomia dindygulensis were evaluated on 13 species of weed plants.The results showed that the extracts had a strong inhibition effect to the roots and the stems of all the plants.The IC 50 values of ethanol extracts on roots length were 0.73 and 0.80 mg/mL against Abutilon theophrasti and Echinochloa crusgalli,and the IC 50 values on stems length were 0.77 and 0.89 mg/mL,respectively.Pot experiments indicated that the inhibition rates were 82.02%and 90.73%,respectively,after 7 days at a concentration of 5 mg/mL against A.theophrasti and E.crusgalli,which has no significant difference with the control herbicide decanoic acid.The results provide a new way for further research on the development of new herbicides.

关 键 词：石蝉草 乙醇提取物 除草活性 

分 类 号：S451[农业科学—植物保护]