Produção Nacional
Revisado por pares
Natural resistance of soybean cultivars to the soybean looper larva Chrysodeixis includens (Lepidoptera: Noctuidae)
2017; Embrapa Informação Tecnológica; Volume: 52; Issue: 1 Linguagem: Inglês
10.1590/s0100-204x2017000100003
ISSN1678-3921
AutoresPaulo Eduardo Wille, Bruna Angelina Pereira, Cleiton Luiz Wille, Samanta Souza Restelatto, Mari Inês Caríssimi Boff, Cláudio Roberto Franco,
Tópico(s)Agricultural pest management studies
ResumoAbstract: The objective of this work was to evaluate the natural resistance of soybean cultivars to Chrysodeixis includens. For this, four commercial soybean cultivars recommended for the Southern region of Brazil were used: BR 36, NA 5909 RG, BMX Turbo RR, and Benso 1RR. In the laboratory, larvae were subjected to the antixenosis feeding assay, in which they were free or not to choose among old leaves, new leaves, and pods. Neonate larvae were subjected to two antibiosis tests: in the first one, they were fed with leaves from the middle third of the plants of the four cultivars; and, in the second one, with leaves or pods of the NA 5909 RG cultivar. Chrysodeixis includens larvae prefer leaves over pods and old leaves over new ones. The Benso 1RR cultivar extends the development cycle of C.includens, but only BMX Turbo RR will reduce the population growth of larvae in the next generations.
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