13种植物精油和茴香脑对赤拟谷盗成虫熏蒸活性研究  

Fumigation Activities of 13 Kinds of Essential Oils and Anethole Against the Adult of Tribolium Castaneum( Herbst)

作　　者：陆驰宇[1] 史家浩 李绍勤[1] 

机构地区：[1]湖北省昆虫资源利用与害虫可持续治理重点实验室华中农业大学植物科学技术学院,武汉430070

出　　处：《中国粮油学报》2014年第2期72-75,88,共5页Journal of the Chinese Cereals and Oils Association

摘　　要：在20μL/L的剂量下,测试了13种植物精油对赤拟谷盗成虫的熏蒸作用,其中以八角茴香油效果最佳,熏蒸24 h的校正死亡率达到100%,显著高于其他精油。随着熏蒸时间的延长,八角茴香油对赤拟谷盗的LC50值逐渐降低,熏蒸12 h时LC50值为13.88μL/L,熏蒸72 h时降为5.08μL/L,仅为熏蒸12 h的0.36倍。继而采用GC-MS技术对八角茴香油的主要组分进行分离鉴定,共从八角茴香油中鉴定出21种组分,其中茴香脑的相对百分含量为79.81%,为八角茴香油的主要成分。进一步测试了茴香脑对赤拟谷盗的熏蒸毒力,熏蒸12 h时LC50值为7.76μL/L,72 h时LC50值降为3.36μL/L,不同熏蒸时段茴香脑的LC50值均低于相应时段八角茴香油的LC50值,与八角茴香油相比,茴香脑对赤拟谷盗具有更强的熏蒸作用。On the condition of dosage of 20 μL/L, the fumigation effects of 13 kinds of essential oils against the adult of Tribolium castaneum （Herbst） are studied. The results show that the effect of Illicium verum oil was better than that of the other essential oils. The mortality rate reached 100% under the 24 h exposure. The results of fumiga- tion toxicity of lllicium verum oil against adults show as follows ： with the extension of exposure time, the fumigation effect enhanced significantly. When fumigation time increased from 12 h to 72 h, the LCs0 decreased from 13.88μL/L to 5.08 μL/L. Then 21 kinds of ingredients from Illicium verum oil were found by GC -MS; nent was anethole, and the relative content was 79.81%. The main compo- fumigation toxicity results of anethole against adults show an increase of the fumigation time from 12 h to 72 h ; the LCs0 decreased from 7.76 μL/L to 3.36 μL/L. The LC50 of anethole was lower than that of Illicium verum oil. The fumigation effects of anethole against Tribolium castane- urn adult is stronger than that of Illiciurn verurn oil.

关 键 词：植物精油 赤拟谷盗 熏蒸活性 八角茴香油 茴香脑 

分 类 号：S482.6[农业科学—农药学]