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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)
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
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Type: Article
Place of Publication: Dordrecht (Netherlands)
Pages: art. 180
Issue: 11
Volume: 215
DOI: 10.1007/s10681-019-2505-3
Agrovoc: ZEA MAYS
Agrovoc: YIELDS
Journal: Euphytica

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

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