| Autor: |
Silva, Gabriela Vieira, de Freitas Bueno, Adeney, Bortolotto, Orcial Ceolin, dos Santos, Antônio César, Pomari-Fernandes, Aline |
| Zdroj: |
Revista Brasileira de Entomologia; July-September 2016, Vol. 60 Issue: 3 p255-259, 5p |
| Abstrakt: |
This study aimed to evaluate the development and reproduction of the black armyworm, Spodoptera cosmioideswhen larvae fed on leaves of Bt-corn hybrids, expressing a single Cry1F and also Cry1F, Cry1A.105 and Cry2Ab2 in pyramided corn and their non-Bt-isoline (hybrid 2B688), as well as on leaves of two soybean isolines expressing the Cry1Ac protein and its non-Btisoline (A5547-227). We also assessed the effect of these Btand non-Btplants on the leaf consumption rate of S. cosmioideslarvae. This pest was unable to develop when fed on any of the corn isolines (Btand non-Bt). When both 1st and 3rd instar larvae were fed on corn leaf, mortality was 100% in both Btand non-Btcorn. In contrast, when corn leaves were offered to 5th instar larvae, there were survivors. Defoliation and leaf consumption was higher with non-Btcorn than with both of the Btcorn isolines. There was no negative effect of Btsoybean leaves on the development and reproduction of S. cosmioideswith respect to all evaluated parameters. Our study indicates that both Btand non-Btcorn adversely affect the development of S. cosmioideswhile Btsoybean did not affect its biology, suggesting that this lepidopteran has major potential to become an important pest in Btsoybean crops. |
| Databáze: |
Supplemental Index |
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