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Resistance of Bt-maize (MON810) against the stem borers Busseola fusca (Fuller) and Chilo partellus (Swinhoe) and its yield performance in Kenya

Author: Tadele Tefera
Author: Mugo, S.N.
Author: Mwimali, M.
Author: Anani, B.
Author: Tende, R.
Author: Beyene, Y.
Author: Gichuki, S.
Author: Oikeh, S.O
Author: Nang’ayo, F.
Author: Okeno, J.
Author: Njeru, E.
Author: Pillay, K.
Author: Meisel, B.
Author: Prasanna, B.M.
Year: 2016
URI: http://hdl.handle.net/10883/17839
Abstract: A study was conducted to assess the performance of maize hybrids with Bt event MON810 (Bt-hybrids) against the maize stem borer Busseola fusca (Fuller) in a biosafety greenhouse (BGH) and against the spotted stem borer Chilo partellus (Swinhoe) under confined field trials (CFT) in Kenya for three seasons during 2013e2014. The study comprised 14 non-commercialized hybrids (seven pairs of near-isogenic Bt and non-Bt hybrids) and four non-Bt commercial hybrids. Each plant was artificially infested twice with 10 first instar larvae. In CFT, plants were infested with C. partellus 14 and 24 days after planting; in BGH, plants were infested with B. fusca 21 and 31 days after planting. In CFT, the seven Bt hybrids significantly differed from their non-Bt counterparts for leaf damage, number of exit holes, percent tunnel length, and grain yield. When averaged over three seasons, Bt-hybrids gave the highest grain yield (9.7 t ha1), followed by non-Bt hybrids (6.9 t ha1) and commercial checks (6 t ha1). Bt-hybrids had the least number of exit holes and percent tunnel length in all the seasons as compared to the non-Bt hybrids and commercial checks. In BGH trials, Bt-hybrids consistently suffered less leaf damage than their non-Bt near isolines. The study demonstrated that MON810 was effective in controlling B. fusca and C. partellus. Bt-maize, therefore, has great potential to reduce the risk of maize grain losses in Africa due to stem borers, and will enable the smallholder farmers to produce high-quality grain with increased yield, reduced insecticide inputs, and improved food security.
Format: PDF
Language: English
Publisher: Elsevier
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Country focus: Kenya
Place of Publication: United Kingdom
Pages: 202-208
Volume: 89
DOI: 10.1016/j.cropro.2016.07.023
Keywords: Bt-Maize
Keywords: Confined Field Trial
Keywords: GM Crops
Keywords: MON810
Country of Focus: KENYA
Agrovoc: MAIZE
Agrovoc: BUSSEOLA FUSCA
Agrovoc: CHILO PARTELLUS
Agrovoc: INBRED LINES
Agrovoc: FIELD EXPERIMENTATION
Journal: Crop Protection


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  • Maize
    Maize breeding, phytopathology, entomology, physiology, quality, and biotech

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