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Factor analysis to investigate genotype and genotype × environment interaction effects on pro-vitamin A content and yield in maize synthetics

Author: Mengesha, W.
Author: Menkir, A.
Author: Meseka, S.
Author: Bossey, B.
Author: Afolabi, A.
Author: Burgueño, J.
Author: Crossa, J.
Year: 2019
ISSN: 0014-2336
ISSN: 1573-5060 (Online)
URI: https://hdl.handle.net/10883/20635
Abstract: Vitamin A Deficiency (VAD) is a major public health problem in Sub-Saharan Africa affecting 33 million preschool-age children. Enrichment of maize varieties with provitamin A could provide sustainable and affordable solution to VAD. This study was conducted to understand the extent of GEI effects on both grain yield and provitamin A content in 21 maize synthetics and identify synthetics combining stable performance with high level provitamin A content across diverse environments in West Africa. Combined analysis of variance found significant (p < 0.01) GEI effects that prompted further investigation of the GEI magnitude using mixed model with factor analysis. Factors 1 and 2 explained 71% of the total variability. G5, G4, G12, G18, G2 and G14 were broadly adapted to a range of environments and considered the most stable and high yielding. G8, G1, and G10 were specifically adapted to a group of environments. Whereas, G21, G19 and G17 were found to be the worst and unstable genotypes. G4 combined stable performance with high provitamin A content, whereas G20 and G18 were stable but had low provitamin A contents. Three genotypes, G4, G12 and G14 were found to combine stability with high provitamin A contents. These genotypes can be recommended for production in the low-land tropics of West and Central Africa with similar environments.
Format: PDF
Language: English
Publisher: Springer
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
Place of Publication: Dordrecht (Netherlands)
Pages: art. 180
Issue: 11
Volume: 215
DOI: 10.1007/s10681-019-2505-3
Agrovoc: PROVITAMINS
Agrovoc: GENOTYPE ENVIRONMENT INTERACTION
Agrovoc: ZEA MAYS
Agrovoc: STABILITY
Agrovoc: VITAMIN A DEFICIENCY
Agrovoc: YIELDS
Agrovoc: FACTOR ANALYSIS
Journal: Euphytica


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    Genetic Resources including germplasm collections, wild relatives, genotyping, genomics, and IP

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