Adaptability and Stability for Iron and Zinc in Cowpea by Ammi Analysis

Abstract

Iron and zinc deficiency is one of the main problems affecting vulnerable populations in the Colombian Caribbean, thereby generating malnutrition from the consumption of foods with low content of essential minerals. The objective of this study was to evaluate the genotype-environment interaction for iron and zinc accumulation in grains in 10 cowpea bean genotypes by additive main effects and multiplicative interaction (AMMI) model and to select the most stable ones to stimulate their planting or as parents in the genetic improvement program. Nine promising lines and a commercial control were evaluated using the randomized complete block design with 10 treatments and four replications in 10 environments of the northern Colombia in the second semester of 2017 and first of 2018. The adaptability and stability analysis was done using AMMI model. The results showed highly significant differences at the level of environments, genotypes, and genotype-environment interaction for iron and zinc, demostrating a differential adaptability of genotypes in the test environments. Genotypes 2 and 3 expressed greater adaptability and stability for iron contents in the seed; while genotype 1, recorded it for zinc contents. These three genotypes outperformed the commercial control and, therefore, can be recommended for planting or be used as parents in the genetic improvement program.

Expression of Nutritional Traits in Vegetable Cowpea Grown under Various South African Agro-Ecological Conditions

“…Soil N and soil pH are factors that affect the symbiotic relationship between legumes and N-fixing bacteria, which in turn contribute to soil fertility [ 20 ]. Still, other studies surveying micronutrient content in legumes, particularly cowpea, emphasize the influence of soil micronutrient availability on Fe and Zn content in the plant [ 39 ]. For example, soil organic matter is a critical factor influencing the availability and uptake of soil micronutrients to the plant, with plant micronutrient deficiencies more likely to occur with soils low in organic matter and sandy soils (Washington State University Extension, ) (accessed on 4 May 2022).…”

Characterization of cowpea cultivars for grain size, color, and biofortification

“…Studies have shown that cowpea grains have higher zinc contents than common beans (COELHO et al, 2021;GERRANO et al, 2019) and cowpea germplasms presents high variability in grain zinc, iron, and protein contents (CARVALHO et al, 2012;DIAS-BARBOSA et al, 2020BOITEUX, 2013BOITEUX, , 2015OLIVEIRA et al, 2017;WENG et al, 2019;CARDONA-AYALA et al, 2021). Variability in iron and zinc contents assists in the selection of superior lines and in the development of biofortified cultivars with these micronutrients (DIAS-BARBOSA et al, 2020.…”