Characterization of antixenosis toDichelops melacanthus(Hemiptera: Pentatomidae) in soybean genotypes

Abstract

Soybeans are of great importance in the world agricultural landscape, and their productive potential is significantly reduced by attacks from insect pests. Factors such as the expansion of national agricultural regions, together with no-tillage management and "off-season" maize cultivation, have favored the increase of secondary species such as Dichelops melacanthus (Dallas) (Hemiptera: Pentatomidae), intensifying the damage caused by the soybean stink bug complex. The use of resistant genotypes may be a valuable strategy as an alternative to the excessive use of chemical control in crops. This study evaluated the attractiveness and feeding preferences of the green-belly stink bug in 17 soybean genotypes in different maturity groups (early, semiearly, and late) to characterize the expression of antixenosis resistance. To this end, free-choice tests of attractiveness and food preference were performed under laboratory conditions. The early genotypes

Intraspecific and interspecific interaction and fitness cost of stink bugs Euschistus heros, Diceraeus melacanthus, and Piezodorus guildinii in soybean

“…Studies on the performance of D . melacanthus in soybean genotypes have shown negative results in terms of its biology, 18,26 which aligns with the findings of this study. Therefore, in addition to the interference from interspecific competition, the reduced performance of D .…”

“…5 This demonstrates that competition in their primary hosts provides advantages in their natural habitat. Studies on the performance of D. melacanthus in soybean genotypes have shown negative results in terms of its biology, 18,26 which aligns with the findings of this study. Therefore, in addition to the interference from interspecific competition, the reduced performance of D. melacanthus may be associated with host characteristics.…”

Resistance of Soybean Genotypes toAnticarsia gemmatalis(Lepidoptera: Erebidae): Antixenosis and Antibiosis Characterization

“…Host plant resistance is considered an efficient and less-aggressive method, especially when integrated with other strategies, e.g., biological control. There is a need to identify and incorporate resistant soybean genotypes as pest management tools in integrated pest management (IPM) programs for soybean ( Smith and Clement 2012 , Canassa et al 2017 , Baldin et al 2019 ).…”