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Bioactivity of extracts and isolated compounds from Vitex polygama (Verbenaceae) and Siphoneugena densiflora (Myrtaceae) against Spodoptera frugiperda (Lepidoptera: Noctuidae)
Author(s) -
Gallo Margareth BC,
Rocha Waldireny C,
da Cunha Uemerson S,
Diogo Fernanda A,
da Silva Fernando C,
Vieira Paulo C,
Vendramim José D,
Fernandes João B,
da Silva M Fátima das GF,
BatistaPereira Luciane G
Publication year - 2006
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.1278
Subject(s) - noctuidae , biology , verbenaceae , lepidoptera genitalia , spodoptera , botany , myrtaceae , vitex , larva , melia azedarach , vitex negundo , pest analysis , lippia , pupa , pinus densiflora , horticulture , essential oil , biochemistry , gene , recombinant dna
The effects of crude extracts, fractions and isolated compounds from Vitex polygama Cham. and Siphoneugena densiflora Berg were evaluated on the development of Spodoptera frugiperda JE Smith, a destructive insect pest of corn and several other crops. The extracts and fractions were incorporated into an artificial diet at 1 mg g −1 and offered to the insect during its larval stage. Length and viability of larval and pupal stages as well as pupal weight were assessed. Isolated compounds were tested through superficial contamination of the diet at 0.1 mg g −1 . Weight and viability of ten‐day‐old larvae were determined. Methanolic and hydroalcoholic S. densiflora extracts caused 100% larval mortality, while leaf and fruit hydroalcoholic extracts from V. polygama were the most active. Among the isolated compounds, flavonoids presented the best insecticidal results, and tannins the best larval growth inhibition. Copyright © 2006 Society of Chemical Industry