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      Oviposition behavior and foliar consumption of Chrysodeixis includes (Lepidoptera: Noctuidae) in soybean genotypes Translated title: Comportamento de oviposição e consumo foliar de Chrysodeixis includens (Lepidoptera: Noctuidae) em genótipos de soja

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          Abstract

          ABSTRACT: The use of plant resistance acts by intervening in the herbivore-host relationship, through morphological, physical or chemical factors of the plant. This study evaluated the oviposition and foliar consumption of Chrysodeixis includens (Walker [1858]) in soybean genotypes, in free- and no-choice tests, correlating them with the factors, density and size of trichomes. The experiments were carried out in laboratory (25 ± 2 °C; RH= 70 ± 10%; photoperiod 14h) using five cultivars (BRS 391, BRS 6203 RR, BMX Valente RR, Tec Irga 6070 RR, BMX Icone Ipro) and two isolines (PELBR 10-6000 and PELBR 10-6049). The trichomes reported were filiform tectors and claviform multicellular glandular. The density of glandular trichomes, in stages V2 and V5, was higher on BRS 6203 RR and BRS 391, respectively. The higher density of glandular trichomes was observed in V5 and a higher density of tector trichomes in V2. The lowest densities and the smallest sizes of trichomes in V2 and V5 stages was observed on PELBR 10-6049. The size of tector trichomes and the number of eggs did not differ among the cultivars. Foliar consumption was lower for on BMX Icone Ipro and Tec Irga 6070 RR. Trichome density influences the consumption and oviposition behavior of C. includens.

          Translated abstract

          RESUMO: O uso da resistência de plantas atua intervindo na relação herbívoro-hospedeiro, através de fatores morfológicos, físicos ou químicos da planta. O objetivo deste trabalho foi avaliar a oviposição e o consumo foliar de Chrysodeixis includens (Walker [1858]) em genótipos de soja, através de testes com e sem escolha, correlacionando-os com os fatores, densidade e tamanho de tricomas. Os experimentos foram realizados em laboratório (25 ± 2 °C; UR= 70 ± 10%; fotoperíodo 14h) utilizando cinco cultivares (BRS 391, BRS 6203 RR, BMX Valente RR, Tec Irga 6070 RR, BMX Icone Ipro) e duas linhagens (PELBR 10-6000 e PELBR 10-6049). Os tricomas encontrados foram tectores filiformes e glandulares multicelulares claviformes. A densidade de tricomas glandulares nos estágios V2 e V5, foi maior em BRS 6203 RR e BRS 391, respectivamente. A maior densidade de tricomas glandulares foi observada em V5 e a maior densidade de tricomas tectores em V2. As menores densidades e os menores tamanhos de tricomas nos estágios V2 e V5 foram observados em PELBR 10-6049. O tamanho de tricomas tectores e o número de ovos não diferiram entre as cultivares. O consumo foliar foi menor para BMX Icone Ipro e Tec Irga 6070 RR. A densidade de tricomas influência o comportamento de consumo e oviposição de C. includens.

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          Most cited references48

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          Técnicas de criação de insetos para programas de controle biológico

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            Chemical ecology of oviposition in phytophagous insects

            J. Renwick (1989)
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              Insect Resistance in Crop Plants

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                Author and article information

                Journal
                cr
                Ciência Rural
                Cienc. Rural
                Universidade Federal de Santa Maria (Santa Maria, RS, Brazil )
                0103-8478
                1678-4596
                2024
                : 54
                : 2
                : e20220474
                Affiliations
                [1] Capão do Leão Rio Grande do Sul orgnameUniversidade Federal de Pelotas orgdiv1Faculdade de Agronomia Eliseu Maciel orgdiv2Departamento de Fitossanidade Brazil
                [3] Pelotas Rio Grande do Sul orgnameEmbrapa Clima Temperado Brazil
                [2] Bagé orgnameInstituto Federal Sul Rio-Grandense Brazil
                Article
                S0103-84782024000200203 S0103-8478(24)05400200203
                10.1590/0103-8478cr20220474
                9d0f2df1-cf97-4849-9db9-30a74b073385

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 12 May 2023
                : 23 August 2022
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 48, Pages: 0
                Product

                SciELO Brazil

                Categories
                Crop Production

                Glycine max,lagarta-falsa-medideira,livre escolha,sem escolha,antixenose,Soybean Looper,free-choice,no-choice,antixenosis.

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