| Autor: |
Tavares, Wagner De Souza, Grazziotti, Geisel Hudson, De Souza Júnior, Amauri Alves, De Sousa Freitas, Silvia, Consolaro, Hélder Nagai, De Aquino Ribeiro, Paulo Eduardo, Zanuncio, José Cola |
| Zdroj: |
Journal of Food Protection; November 2013, Vol. 76 Issue: 11 p1892-1901, 10p |
| Abstrakt: |
Sitophilus zeamais(Coleoptera: Curculionidae) and Spodoptera frugiperda(Lepidoptera: Noctuidae) are important economic pests of corn, Zea mays(Poaceae). Psychotriaspp. (Rubiaceae) plants are rich in secondary metabolites that could be toxic against such pests. We have screened extracts from four species of Psychotriaabundant in the Cerrado (Savannah-type) biome of Brazil for the toxicity to two insects. We found that extracts from leaves and stems had significant effects on the hatching rate, parameters of caterpillar body (weight and length and width of head capsule), repellency, and mortality of these two pests, although the effects varied according to the Psychotriaspecies and plant source (stem or leaf). Extracts of the stems of Psychotria hoffmannseggianaand of Psychotria capitatawere more toxic to S. zeamaisand the stems of Psychotria goyazensisto S. frugiperda; therefore, such extracts could have the potential for use in integrated pest management schemes. |
| Databáze: |
Supplemental Index |
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