Maize (Zea mays L.) is a staple food for millions of people across the globe, and it supplies more than 30% of total dietary calories. However, the normal endosperm lacks a sufficient quantity of the nutritive precursor of vitamin A. To achieve food security and avert malnutrition, there is a need to adopt the cultivation of the early multiple stress-tolerant pro-vitamin A maize hybrid. The objective of this study was to assess the agronomic performance and yield of the newly developed maize hybrids. Fifteen improved maize hybrids and one commercial hybrid used as a local check were evaluated in a randomized complete block design with two replications for two years at the Ladoke Akintola University of Technology Teaching and Research farm in Ogbomoso, Nigeria. Hybrids exhibited significant variation (P < 0.01) for grain yield, number of days to anthesis and silking, ear height and husk cover. Across the years, the grain yield of hybrids ranged between 4,780.8 kg ha?1 (PVAEH-19) and 7,886.9 kg ha?1 (PVAQEH-1), with a mean of 6,354.2 kg ha?1. PVAEH-15 ranks the best on the basis of superiority in grain yield, early flowering and tight husk cover. Fourteen hybrids out-yielded the local check (4,947.2 kg ha-1), and five hybrids had a significant (P < 0.05) yield advantage of > 26% over the local check. The consistent performance of PVAEH-15 and PVAEH-16 in the two years of evaluation indicates potential for the adaptability of the hybrids to the agro-ecology. Farmers? adoption of these maize hybrids will boost maize production and prevent malnutrition in the derived savanna agro-ecology of Nigeria.
This work was carried out in collaboration between all authors. Author LBA designed the study and wrote the protocol, author RIA performed the statistical analysis, wrote the first draft of the manuscript and managed the analyses. Author OEG managed the field activities, data recording and while author AMO managed the literature searches. All authors read and approved the final manuscript.
Winged bean accessions were screened to evaluate biomass yield potential. The experiments, carried out during 2015 and 2016 to test nineteen accessions were laid out in Randomized Complete Block Design and replicated three times. Data collected on number of days to 50% flowering (DTF), number of days to 50% pod (DTP), total number of pods (TNP) per plant fresh (FSW) and dry shoot weight (DSW), dry pod weight (DPW), total fresh (TFW) and dry (TDW) weight and seed weight per plot (SWP) were analysed for analysis of variance. Results showed that year of planting significantly (P≤0.01) influenced DTF, DTP and SWP. Accessions exhibited significant variations (P≤0.05) for DFF, DTF, DTP and CP, while no significant interaction was observed between the year and accessions (P˃0.05) for all studied traits. FSW had a positive and significant correlation (P≤0.01) with TFW (r= 0.97), DPW (r= 0.87) and TDW (r= 0.78). TFW also had positive and significant correlation (P≤0.01) with DPW (r= 0.68), DSW (r= 0.83) and TDW (r= 0.89). The study revealed that accessions with high biomass accumulation (TPT 12, 11, 53, 5 and 21) are better fit to channel assimilates for yield production through early flowering and pod formation.
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