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Studies on Myzus persicae Resistance to Acetamiprid and Imidacloprid in Shandong Province |
WANG Li-ping1,LIU Yun-fen2,ZHANG Wei3* |
1Plant Protection Station of Fushan District,Yantai 265500,Shandong,China;2 Fushan District Fruit Research Station,Yantai 265500,Shandong,China;3 Yantai Academy of Agricultural Sciences,Yantai 265500,Shandong,China |
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Abstract Five peach aphid(Myzus persicae)populations were collected from vegetable fields in Shouguang,Jinan,Tai’an,Yantai,and Linyi locations of Shandong province to test their sensitiveness to commonly used acetamiprid and imidacloprid.The results indicated that Myzus persicae populations from different locations of Shandong Province had different levels of resistance to acetamiprid and imidacloprid,except population from Yantai was sensitive to Imidacloprid.Compared with the sensitive population,Tai’an population appeared to have the highest LC50 for acetamiprid(451.264 1 mg·L-1)with resistance ratio 23.63 fold.The highest resistance level to imidacloprid was recorded in Linyi,and the LC50 amounted to 317.944 6 mg·L-1 with resistance ratio 14.40.These 2 insecticides had not shown high and higher level drug resistance.In actual peach aphid control,we should pay attention to rotate application of other type insecticides.
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Received: 28 October 2015
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