Abstract
Maize consumption as human food is high in sub-Saharan Africa (SSA), but the protein quality is low because of deficiencies in two amino acids, lysine and tryptophane, which are not synthesized in the human body and must be consumed daily. In addition, maize is deficient in several micronutrients, resulting in malnourishment of its consumers. Attempts to incorporate high lysine into maize started long ago on opaque-2 to start with, and CIMMYT made efforts to improve tropical maize for the amino acid but met with limited success due to several constraints. Following the conversion of maize germplasm in WCA into streak resistance by IITA, attention was shifted to several other avenues to improve maize productivity, one of which was quality protein maize (QPM). The Ghana Maize Program made a breakthrough in 1992 and released a QPM variety named Obatanpa meaning “good nursing mother.” Since then, several other OPVs and hybrids have been developed, not only in Ghana but also in several other countries in SSA. In the case of provitamin A biofortification, introgression of favorable genes conferring the trait into early and extra-early germplasm in WCA started in 2007, and as a result, several OPVs, inbred lines, and hybrid provitamin A QPM in the two maturity groups are now available.
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Badu-Apraku, B., Fakorede, M.A.B. (2017). Breeding of Quality Protein and Provitamin A Maize. In: Advances in Genetic Enhancement of Early and Extra-Early Maize for Sub-Saharan Africa. Springer, Cham. https://doi.org/10.1007/978-3-319-64852-1_9
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DOI: https://doi.org/10.1007/978-3-319-64852-1_9
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