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BIOACTIVITIES AND MECHANISM OF SPIRO ENOL ETHER ANALOGUES AGAINST PIERIS RAPAE
Author(s) -
Zhang Zhixiang,
Cheng Dongmei,
Xu Hanhong,
Wu Yulin,
Fan Junfa
Publication year - 2004
Publication title -
insect science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 45
eISSN - 1744-7917
pISSN - 1672-9609
DOI - 10.1111/j.1744-7917.2004.tb00176.x
Subject(s) - pieris rapae , instar , biology , hemolymph , larva , enol ether , toxicology , botany , horticulture , biochemistry , catalysis
Nineteen kinds of spiro enol ether analogues were screened with larvae of Pieris rapae for antifeedant activity. The results showed that the antifeedant activity of compounds No.20 and No. 12 was higher than others. In non‐choice test, AFC50 values within 24 h of compounds No.20 and No. 12 against 3rd instar larvae of P. rapae were 226.93 μg/mL and 370.00 μg/mL, and that in choice test against 4th larvae were 280.54 μg/mL and 398.88 μg/mL, respectively. Compd. No.20 could prolong the eggs hatch time and reduce the haemolymph content and the protein content in haemolymph of 4th instar larvae obviously. Compd. No.20 could protect tested leaves and control larvae of P. rapae effectively.