Performance of quality protein maize varieties and disease reaction in the derived-savanna agro-ecology of South-West Nigeria
AbstractEight quality protein maize (QPM) varieties were evaluated for their agronomic performance and disease reaction in the derived savanna agro-ecology of south-west Nigeria for two years. The eight
varieties comprised of three hybrid varieties (Mama-ba, Dada-ba and CIDA-ba) and five open pollinated (OP) varieties (Obatampa, EV8363, EV8766, Pool-18-SR and Pool-15-SR). Differences among the
varieties were significant for plant and ear heights, number of days to 50% tasling and grain yield. Two hybrid varieties, Mama-ba and CIDA-ba had the highest grain yields of 4.59 and 4.20 t/ha respectively with Obatampa having the lowest yield of 2.95 t/ha. Mama-ba exhibited a yield advantage of 16.20% over the best OP variety (EV8363). All the QPM varieties were susceptible to southern leaf blight, curvelaria leaf spot and maize rust fungal diseases to varying degrees. The severity of each of these diseases on
the QPM varieties was however low less than 3.0. The implications of these findings on QPM introduction and development in Nigeria were discussed.