EVALUATION FOR MULTIPLE PEST RESISTANCE IN EUROPEAN CORN-BORER, OSTRINIA-NUBILALIS, RESISTANT MAIZE ACCESSIONS FROM PERU

Eleven maize, Zea mays L., accessions from Peru previously found resistant to leaf feeding by brst generation European corn borer (ECB1), Ostrinia nubilalis (Hubner), were evaluated for resistance to stalk boring by second generation European corn borer (ECB2), southwestern corn borer (SWCB), Diatraea grandiosella Dyar, fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith), western corn rootworm (WCRW), Diabrotica virgifera virgifera LeConte, corn earworm (CEW), Helicoverpa tea (Boddie), and sugarcane borer (SCB), Diatraea saccharalis (Fab.). Four accessions were resistant to 2 pests in addition to ECB1: PI 503720 was resistant to WCRW and ECB2, whereas PI 503728, PI 503849, and A-10623 were resistant to CEW and ECB2. Accession PI 503720 also had intermediate resistance to CEW and SCB. Accessions PI 503728 and PI 503849 had intermediate resistance to WCRW and SCB. Accession A-10623 had intermediate resistance to CEW larval weight and days to pupation and to SCB. Multiple pest resistance in maize, such as that detected in this study, would be useful in pest management, especially in sustainable agriculture systems.