Resistance Mechanism Exhibited by Selected Maize Varieties to Asian Corn Borer Ostrinia furnacalis Guenee (Lepidoptera: Crambidae), Philippines

Theresistance mechanisms exhibited by the five selected maize varieties against Ostrinia furnacalis [Gueene] or Asian corn borer (ACB) were identified and evaluated in study terms of insects’ percent mortality development. The detached leaf-feeding assay was used experiment laid out Complete Randomized Design (CRD) with 5 treatments replicated three times. Findings among tested ACB, Bt had a high degree antibiosis mechanism. This expected because toxin from variety conferring toxicity to Lepidopterous insect pests like ACB. A similar result Variety 4 (Yellow Dent corn) observed which shows mechanism that is innate within leaves variety. 1 (UPLB Lagkitan), 2 corn), 3 (White show susceptibility Tolerance ACB needs be further investigated it unknown date whether possess lack plant tolerance characteristics. Leaf whorl feeding assays only measure antixenosis maize. Furthermore, test suggested varieties.