Biological characteristics of Heliothis virescens fed with Bt-soybean MON 87701 × MON 89788 and its conventional isoline

Anais da Academia Brasileira de Ciências

Orcial C. Bortolotto¹  Adeney F. Bueno¹  Karla Braga¹  Gustavo C. Barbosa¹  Alisson Sanzovo¹ 

关键词: varietal resistance;    tobacco budworm;    soybean pests;    lepidoptera pests;    Heliothinae;    resistência varietal;    lagarta-da-maçã;    pragas da soja;    lepidóptero-praga;    Heliothinae;   

DOI  :  10.1590/0001-3765201420130495

来源: SciELO

【 摘 要 】

This study aimed to evaluate the larval biology of Heliothis virescens in soybean MON 87701 x MON 89788 and its isogenic non-Bt. In general, the impact of soybean MON 87701 x MON 89788 on H. virescens was evidenced in all bioassays, 100% larval mortality, independent of the structure (leaf or pod) consumed by the pest. The small larvae (1st and 3rdinstar) demonstrated that they were unable to damage fresh pods of soybean, regardless of whether Bt or not Bt. The large larvae (5th instar) fed on soybean MON 87701 x MON 89788 soybeans consumed three times less compared to larvae fed on non-Bt soybeans, and resulted in reduced longevity and larval survival. When soybean plants were infested with 5th instar larvae, H. virescens caused injuries in the steams of the conventional soybean. It was recorded that the insects moves quickly to this region of the plant. However the soybean MON 87701 x MON 89788 was an effective tool in controlling H. virescens.

【 授权许可】

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