Combining Ability and Heterosis for Endosperm Carotenoids and Agronomic Traits in Tropical Maize Lines.

ABSTRACT: Provitamin A enrichment of staple crops through biofortification breeding is a powerful approach to mitigate the public health problem of vitamin A deficiency in developing countries. Twenty-four genetically diverse yellow and orange endosperm maize inbred lines with differing levels of provitamin A content were used for the analysis of their combining ability. Each inbred line was developed from crosses and backcrosses between temperate and tropical germplasm. The inbred lines were grouped into different sets according to their provitamin A levels and were then intercrossed in a factorial mating scheme to generate 80 different single-cross hybrids. The hybrids were evaluated in field trials across a range of agroecological zones in Nigeria. The effect of hybrids was significant on all the

SUBMITTER: Azmach G 

PROVIDER: S-EPMC8458911 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature