Environment and genotype interaction in hybrids maize under heavy weather conditions in Manabí and Los Ríos, Ecuador

Part of the production of yellow dent corn (Zea mays L.) in Ecuador is carried out under unfavorable environmental conditions, where the distribution of rains plays an important role in sustaining productivity. This study aimed at evaluating the effect of the environment and genotype interactions in corn yield and stability of 14 hybrid varieties of sweet corn, experimental and commercial types, evaluated at three locations in the provinces of Manabí and Los Ríos, under heavy-weather conditions during 2011, 2012 and 2013. Several analy- sis of variance were performed for each location, and a combined analysis was conducted for determining environment and genotype interactions. For the stability analysis, we used the Eberhart y Russell model. Genotypes G2 (POB.3F4.27-1-1-1 × CML-451) and G9 (PORT.PHAEO.1AS2.4-1-1-1 × L.I.4) showed greater stability due to its reduced yield variability in different environments and crop cycles. In favorable environments, genotypes G5 (PORT.PHAEO.1AS2.4-1-1-1 × CL-02450) and G13 (DEKALB-7088) showed their genetic potential for yield, but under changing environmental conditions, the result was a sensitive and unstable production. Genotypes G14 (DEKALB-1596) and G11 (INIAP H-601) presented the highest stability in the study locations, showing an adequate yield potential in unfavorable conditions, resulting in an alternative solution for locations with fewer precipitations.

• Hovedforfatter: Zambrano Zambrano, Eddie Elí (author)
• Andre forfattere: Limongi Andrade, Jimmy Ricardo Francisco (author), Alarcón Cobeña, Francisco Daniel (author), Villavicencio Linzan, Jean Paul (author), Caicedo Villafuerte, Marlon Brainer (author), Eguez Moreno, José Fernando (author), Zambrano Mendoza, José Luis (author)
• Format: article
• Sprog: spa
• Udgivet: 2017
• Online adgang: https://revistasespam.espam.edu.ec/index.php/Revista_ESPAMCIENCIA/article/view/124