Estimation of baseline susceptibility of several Philippine Lepidopteran pest of corn to Cry 1A. 105 and Cry2Ab2 proteins

Issue Date

10-2014

Abstract

Cry 1A. 105 and Cry2Ab2 proteins derived from Bacillus thuringiensis and co-expressed in Bt corn MON 89034 were bioassayed against several populations of three lepidopterous insect pests of corn in the Philippines. Cry 1A. 105 is highly toxic to Asian corn borer (ACB) Ostrinia furnacalis followed by common cutworm Spodoptera litura and corn earworm Helicoverpa armigera. Variations in susceptibility across the target insects ranged from 13-fold to 134-fold based on range of LC 50 values for Cry 1A. 105 protein and 6.5-fold to about 150-fold for Cry2Ab2 protein.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

28

Issue

2

Page

214

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

OSTRINIA FURNACALIS; HELICOVERPA ARMIGERA; SPODOPTERA LITURA; ZEA MAYS; PESTS OF PLANTS; PHILIPPINES

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