TY - JOUR AU - Mejia-Salazar, Julian Roberto AU - Galeano-Mendoza, Carlos Hernando AU - Burbano-Erazo, Esteban AU - Vallejo-Cabrera, Franco Alirio AU - Arango, Miguel PY - 2020/01/01 Y2 - 2024/03/28 TI - Genotype by environment interaction of nine cotton varieties for inter Andean Valleys in Colombia: Evaluation of cotton genotypes in different environments JF - Agronomía Mesoamericana JA - Agron. Mesoam. VL - 31 IS - 1 SE - Articles DO - 10.15517/am.v31i1.37178 UR - https://revistas.ucr.ac.cr/index.php/agromeso/article/view/37178 SP - 31-42 AB - <p><strong><span class="CharOverride-2">Introduction. </span></strong>The use of stability estimators for agronomic characteristics of interest allows understanding the behavior of the genotype in relation to those environmental factors that influence its expression.<span class="CharOverride-2"><strong> Objective.</strong> </span>The objective of this study was to determine genotype by environment (GE) interaction to select cotton varieties with a high seed yield potential and fiber percentage. <span class="CharOverride-2"><strong>Materials and methods.</strong> </span>Nine varieties of transgenic cotton were evaluated in ten localities distributed in two geographically different ecoregions: geographical valleys of the Magdalena and Cauca rivers, by means of random complete block design, between the months of March and August in 2013.<strong><span class="CharOverride-2"> Results.</span> </strong>Cotton seed yield had significant GE interaction, where the three principal components (PC) of the Additive Main Effects and Multiplicative Interaction (AMMI) model were significant (p&lt;0.01), with contributions of 86.9, 6.4, and 3.3 %, respectively. The average yield for the two ecoregions were 3.3 t ha<span class="CharOverride-3">-1</span> (Magdalena river geographical valley) 4.5 t ha<span class="CharOverride-3">-1</span> (Cauca river geographical valley), and for all the evaluated localities in the ecoregions was 3.9 t ha<span class="CharOverride-3">-1</span>. Fiber percentage did not present significative GE interaction and had an average value of 43,34%. The V004 variety showed the best performance with an average yield of 4.9 t ha<span class="CharOverride-3">-1</span>. The varieties with greater adaptability were V001 and V002. A high correlation was observed between the most productive varieties and the most productive environments. <strong><span class="CharOverride-2">Conclusion. </span></strong>The differential behavior between varieties and localities for yield allowed to select varieties for specific environments, or with phenotypic plasticity for several environments.</p> ER -