Copyright (c) 2020 Revista de Investigación Agraria y Ambiental
Agronomic and nutritional evaluation of eight lines of cowpea bean (Vigna unguiculata [L.] Walp.)
Contextualization: The cowpea bean is important for the food security of the Caribbean region of Colombia, where creole genotypes of low-yielding per hectare, susceptible to biotic and abiotic factors, and low mineral content are cultivated.
Knowledge gap: The agronomic performance and mineral accumulation in the grain of new genotypes obtained by individual selection are unknown.
Purpose: To evaluate the agronomic performance and nutritional quality of eight advanced homozygous lines of cowpea beans from the breeding program of the Universidad de Córdoba, Colombia.
Methodology: The experiment was established between April and July 2014, under a randomized complete block design with nine treatments, including the Criollo-Córdoba as control, with four replications. The characteristics pod length, grain length and width and, pod weight, number of seed per pod, weight of one hundred seed, grain yield per hectare, iron, zinc, phosphorus and protein content were evaluated.
Results and conclusions: The genotypes showed significant differences in pod weight, number of seed per pod, grain length, grain width, grain yield per hectares, iron, phosphorus and protein content in the grain. Lines L-042 and L-047 were the ones with the best agronomic performance and the highest nutritional quality. Principal component analysis and biplot allowed to identify the L-014 and L-047 genotypes associated with grain length, pod length and pod weight, while L-006, L-042 and CR-CO, are associated to grain width, weight of one hundred seed and grain yield per hectare, which is important for genetic improvement programs for this species.
Copyright (c) 2020 Revista de Investigación Agraria y Ambiental
