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- Title
Factor analysis to investigate genotype and genotype × environment interaction effects on pro-vitamin A content and yield in maize synthetics.
- Authors
Mengesha, Wende; Menkir, Abebe; Meseka, Silvestro; Bossey, Bunmi; Afolabi, Agbona; Burgueno, Juan; Crossa, Jose
- 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.
- Subjects
WEST Africa; SUB-Saharan Africa; GENOTYPE-environment interaction; FACTOR analysis; GROUP of Twenty; GENOTYPES; CORN; VITAMIN deficiency
- Publication
Euphytica, 2019, Vol 215, Issue 11, pN.PAG
- ISSN
0014-2336
- Publication type
Article
- DOI
10.1007/s10681-019-2505-3