The objective of this study was to determine the stability of commercial and experimental maize hybrids in the Central Ecuadorian Coastal Region. During a period from december 2010 to april 2011 uniform trials of yield in four locations with contrasting environments were evaluated. The genetic material was constituted by five experimental hybrids and three commercial. The experimental design used was completely randomized blocks design with four replications; the experimental plots were two rows with a length of 5.0 m separated to 0.90 meters. The combined analysis of variance proposed by Eberhart and Russel was statistical significance as well as for genotype and for interaction. The average yield showed that between experimental hybrids two, (SM45 x SSD08)SV39 and (SM45 x SV15)SV39, were highlighted with averages higher than 7.0 t ha-1 whilst AG-003 was the highlighted commercial hybri...

The objective of this study was to determine the stability of commercial and experimental maize hybrids in the Central Ecuadorian Coastal Region. During a period from december 2010 to april 2011 uniform trials of yield in four locations with contrasting environments were evaluated. The genetic material was constituted by five experimental hybrids and three commercial. The experimental design used was completely randomized blocks design with four replications; the experimental plots were two rows with a length of 5.0 m separated to 0.90 meters. The combined analysis of variance proposed by Eberhart and Russel was statistical significance as well as for genotype and for interaction. The average yield showed that between experimental hybrids two, (SM45 x SSD08)SV39 and (SM45 x SV15)SV39, were highlighted with averages higher than 7.0 t ha-1 whilst AG-003 was the highlighted commercial hybri...

The study was carried out in small Agricultural Production Units (UPA) that grow corn in the Cuatro Vientos and Lomas de Mera villages of the Mocache canton, humid tropics of Ecuador in order to evaluate the composition of agrodiversity and its relationship with its sustainability. The rapid characterization consisted of identifying the perceived problems and the state of agrodiversity on the farms, through direct observation and semi-structured interviews. For the detailed characterization, standardized and weighted sustainability indicators were used according to their importance in the sociocultural, economic and environmental dimensions. Farmers had a limitation on the low costs of the products since there was no price stability. The local hybrid INIAP H-551 continues to be managed under conventional practices. The planned agrodiversity influenced the similarity of the farms between ...