Adulticidal activity of phthalides identified in Cnidium officinale rhizome to B- and Q-biotypes of Bemisia tabaci.

作者: Song-Hwa Chae , Soon-Il Kim , Seong-Hum Yeon , Si-Woo Lee , Young-Joon Ahn

DOI: 10.1021/JF201927T

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摘要: The residual contact toxicity of three benzofuranoids (Z)-butylidenephthalide (1), (3S)-butylphthalide (2), and (Z)-ligustilide (3) identified in the rhizome Cnidium officinale (Apiaceae) to B- Q-biotype females Bemisia tabaci was evaluated using a leaf-dip bioassay. Results were compared with those eight conventional insecticides. Based on 24 h LC50 values, (254 ppm) (268 more toxic than (339 against B-biotype females, whereas (338 (586 females. Thiamethoxam, imidacloprid, acetamiprid differ significantly between (LC50, 1.7 11.6 vs 364.5 >3000 ppm). This original finding indicates that phthalides neonicotinoids do not share common mode action or elicit cross-resistance. Structure–activity relationship presen...

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