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| Albuquerque,Maria Rose Jane R.; Costa,Sonia Maria O.; Bandeira,Paulo N.; Santiago,Gilvandete Maria P.; Andrade-Neto,Manoel; Silveira,Edilberto R.; Pessoa,Otilia D.L.. |
| The chemical composition of the essential oils from aerial parts of Pectis apodocephala and Pectis oligocephala were analyzed by GC-MS. The essential oils of these species were predominantly constituted by monoterpenes. Geranial (42.9-44.5%), neral (32.2-34.2%) and alpha-pinene (10.7-11.4%) were the main constituents in the oil of P. apodocephala, while p-cymene (50.3-70.9%) and thymol (24.4-44.7%), were the prevalent compounds in the oil of P. oligocephala. The essential oils were tested against the root knot nematode Meloidogyne incognita and Aedes aegypti larvae survival. The results obtained show that both essential oils exhibited significant activity and could be considered as potent natural namaticidal and larvicidal agents. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pectis apodocephala; Pectis oligocephala; Essential oil; Nematicidal activity; Larvicidal activity. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000200003 |
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| Braga,Yussef F.B.; Grangeiro,Thalles B.; Freire,Eder A.; Lopes,Helano L.; Bezerra,José N. S.; Andrade-Neto,Manoel; Lima,Mary Anne S.. |
| The effect of 2-tridecanone vapor on the cowpea weevil (Callosobruchus maculatus) development was determined. Seeds of cowpea were infested with adults and exposed to different doses of 2-tridecanone isolated from Pilocarpus microphyllus Stapf ex Holm, a plant species native from northeastern Brazil. The pure monoterpene was evaluated both undiluted as well as in the dilutions 1:10, 1:100 and 1:1,000 (v/v). The following parameters of the cowpea weevil life cycle were analyzed in response to decreasing doses of 2-tridecanone: number of eggs laid, percentage of egg hatching on seeds, percentage of adult emergence, adult weight at emergence, mean developmental time and number of adults emerged. Vapor of 2-tridecanone caused a significant (P < 0.05)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Callosobruchus maculatus; Cowpea; 2-tridecanone; Pilocarpus microphyllus. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000100005 |
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