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Comparison of Bt maize hybrids with their non‐transgenic counterparts and commercial varieties for resistance to European corn borer and for agronomic traits by T. Magg; A. E. Melchinger; D. Klein; M. Bohn is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Abstract The European corn borer (ECB), __Ostrinia nubilalis__ (Hübner), is a major pest of maize (__Zea mays__ L.) in Central Europe. In order to compare transgenic __Bt__ maize hybrids with their non‐transgenic counterparts and commercial hybrids, field trials and a laboratory bioassay were conducted. The field experiments were performed at four locations with natural and manual infestation of ECB larvae in 1998 and 1999. Transgenic __Bt__ hybrids showed significantly lower means than their corresponding non‐transgenic counterparts and commercial hybrids for all resistance traits (damage rating of stalks, number of larvae per plant, and percentage of damaged plants or ears under infestation). __Bt__ hybrids containing the __CryIA(b)__ gene under the control of green tissue and pollen‐specific promoters (event 176) showed a significantly higher percentage of damaged ears than __Bt__ hybrids carrying the __CryIA(b)__ gene under the control of a constitutive promoter (Mon810). __Bt__ and __non‐Bt__ hybrids showed no significant differences for all agronomic traits, except for plant height under insecticide protection and grain yield reduction under infestation, whereas __Bt__ hyb

Who reads Comparison of Bt maize hybrids with their non‐transgenic counterparts and commercial varieties for resistance to European corn borer and for agronomic traits?

Author

T. Magg; A. E. Melchinger; D. Klein; M. Bohn

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0179-9541)

Published

2001

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)