Control of stored grain pest, Callosobruchus maculatus (F.) (Coleoptera: Bruchidae) using the essential oil isolated from Plectranthus zeylanicus

被引：10

作者：

Balachandra, B. A. H. E. ^{[1
]}

Pathirathna, P. U. ^{[1
]}

Paranagama, P. A. ^{[1
]}

机构：

[1] Univ Kelaniya, Dept Chem, Kelaniya, Sri Lanka

来源：

NATURAL PRODUCT RESEARCH | 2012年 / 26卷 / 23期

关键词：

Plectranthus zeylanicus; Callosobruchus maculatus (F.); essential oil; cowpea; EFFICACY;

D O I：

10.1080/14786419.2011.643883

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The bruchid, Callosobruchus maculatus (F.) causes major losses during the storage of cowpea seeds [Vigna unguiculata (L.) Walp.] in Sri Lanka. Essential oil isolated from Plectranthus zeylanicus plant was tested for potential insecticidal activity against C. maculatus. The gas chromatography studies of the essential oil of P. zeylanicus showed that rho-cymene (3.5%), beta-caryophyllene (0.2%), geranyl acetate (9.3%) and geraniol (7.2%) were the major constituents. The adults of C. maculatus were susceptible to both fumigant and contact toxicity of P. zeylanicus plant oil. LC50 values of 0.927 and 0.010 g L-1 were obtained for fumigant toxicity and contact toxicity assays, respectively. Oviposition and F-1 adult emergence were significantly inhibited by P. zeylanicus plant oil at a concentration higher than 0.001 g L-1 in both fumigant and contact toxicities. The analysis of olfactometer and choice camber bioassays revealed the repellent effects of the oil of P. zeylanicus plant.

引用

页码：2219 / 2222

页数：4

共 8 条

[1] The efficacy of essential oil of Alpinia calcarata (Rosc.) and its major constituent, 1,8-cineole, as protectants of cowpea against Callosobruchus maculatus (F.) (Coleoptera: Bruchidae) [J].