Stink bugs are considered limiting pests to important crops worldwide. In Brazil, the green-belly stink bug, Dichelops melacanthus Dallas (Hemiptera: Pentatomidae), has become a key pest to the young phase of corn crop, being a problem especially when it succeeds soybean in the field. Injuries caused by this species vary from holes on new leaves to plant death in severe attacks. The main control technique used to this pest are seed treatment and insecticide spraying. Although both methods show some efficiency, factors as outbreaks in the resistance to insecticides and the different susceptibility existent among stink bugs population, leads to the search of other control strategies. Thus, less harmful tools to the environment and humans are highly desirable. In this sense, resistant plants appear as a valuable alternative for insect management, being compatible with other IPM methods. This study evaluated the resistance of 16 corn genotypes to D. melacanthus in order to characterize antixenosis and/or antibiosis expression. Antixenosis was accessed through preference multi-choice test with 5^th instar nymphs. For antibiosis assessment, 60 2^nd instar nymphs were confined on seedlings of 13 selected genotypes. Seedlings of IAC 8046, IAC 8390 and SCS 156 Colorado corn genotypes were less infested by D. melacanthus at 24 h after bugs were released indicating antixenosis expression. Genotypes IAC 8390 and JM 2M60 negatively affected some biological parameters of the green belly stink bug, indicating the occurrence of antibiosis. These genotypes can be useful to breeding programs focusing on corn resistance to stink bugs species.

臭虫被认为将害虫限制在全世界重要的农作物上。在巴西，绿腹臭虫Dichelops melacanthus达拉斯（Hemiptera：Pentatomidae）已成为玉米作物年轻时期的关键害虫，尤其是当它在田间取代大豆时，就成为一个问题。这种物种造成的伤害从新叶子上的洞到严重袭击中的植物死亡都有所不同。对该害虫使用的主要防治技术是种子处理和喷洒杀虫剂。尽管两种方法都显示出一定的效果，但由于臭虫的抗药性爆发和臭虫种群之间存在不同的易感性，导致人们寻求其他控制策略。因此，非常需要对环境和人类危害较小的工具。从这个意义上说，抗性植物与其他IPM方法兼容，可作为昆虫防治的宝贵替代品。这项研究评估了16种玉米基因型对玉米的抗性D. melacanthus是为了表征抗氧化和/或抗生表达。通过对^第5 龄若虫的偏好性多项选择测试来获得抗氧血症。对于抗菌评估，60个2^第二 龄若虫被限制在13个选择的基因型苗。臭虫释放后24小时，IAC 8046，IAC 8390和SCS 156 Colorado玉米基因型的幼苗较少受到D. melacanthus的侵扰，表明抗Xenosis表达。基因型IAC 8390和JM 2M60对绿腹臭虫的某些生物学参数产生了负面影响，表明发生了抗菌作用。这些基因型可用于侧重于玉米对臭虫的抗性的育种计划。