Carotenoid accumulation and agronomic performance of maize hybrids involving parental combinations from different marker-based groups

Abebe Menkir a,⇑, Melaku Gedil a, Sherry Tanumihardjo b, Adegoke Adepoju a, Bunmi Bossey a
a International Institute of Tropical Agriculture (IITA), Oyo Road, PMB 5320 Ibadan, Nigeria
b University of Wisconsin, 273 Nutritional Science, 1415 Linden DY, Madison, WI 53706, United States

 

Abstract

The present study examined the effect of crossing parental lines from two AFLP-based groups on carotenoid
accumulation and agronomic performance in hybrids, which were tested in four environments in
Nigeria. Environments, hybrids and hybrid  environment interactions had significant effects on carotenoid
content. Hybrids had consistent carotenoid levels across test environments. The correlations between
carotenoids produced in a specific branch of the biosynthetic pathway were significant and positive. Environments,
hybrids and hybrid  environment interactions had significant effects on grain yield and other
traits in this study. Several hybrids with high provitamin A content that were competitive to a commercial
hybrid in grain yield and other traits were identified in this study. Selection of parental lines with
high provitamin A content and desirable agronomic traits from different molecular-based groups may
serve as the basis for developing hybrids with greater expression of heterosis in productivity and concentrations
of provitamin A carotenoids.

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