INTERACCION GENOTIPO-AMBIENTE DE VARIEDADES TROPICALES DE MAIZ DESARROLLADOS PARA LA REGION TROPICAL DE VERACRUZ, MEXICO
In the humid tropics of Mexico, improved maize (Zea mays L.) varieties with favorable agronomic characteristics and protein quality are required. Synthetic maize varieties are an affordable alternative because farmers do not need to buy seed each year and are suitable for temporary agriculture. In o...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | México |
| Institución: | Universidad Autónoma de Nayarit |
| Repositorio: | Repositorio Institucional Aramara de la UAN |
| Idioma: | inglés |
| OAI Identifier: | oai:dspace.uan.mx:123456789/450 |
| Acceso en línea: | http://dspace.uan.mx:8080/jspui/handle/123456789/450 |
| Access Level: | acceso abierto |
| Palabra clave: | maíz variedades genotipo interación CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA [6] |
| Sumario: | In the humid tropics of Mexico, improved maize (Zea mays L.) varieties with favorable agronomic characteristics and protein quality are required. Synthetic maize varieties are an affordable alternative because farmers do not need to buy seed each year and are suitable for temporary agriculture. In order to identify maize synthetics with good yield and less interaction genotype environment (G × A), eight maize varieties were planted in four environments during 2009, 2010 and 2011 in the state of Veracruz, Mexico. The experimental design was of complete random blocks with two replicates. The interaction G × A was estimated with the principal additive effects model and multiplicative interaction (AMMI). The results showed that the first two main components (PCA) of the AMMI model were not significant (P≥0.05); However, contributed cumulatively with 73% of the total variation. The variance due to environments was higher than due to genotypic differences. The AMMI model allowed us to group the environments into two relatively homogeneous groups: one consisting of the E2 and E3 environments and the other E1 and E4 environments. The biplot technique was used to identify varieties for general or specific adaptability. In conclusion, there were differential responses between synthetic maize varieties in the evaluated environments. Little association was found between higher yielding varieties and more productive environments. The most productive genotypes identified may be subject to further improvement to obtain a superior cultivar or implement strategies to encourage the development of better hybrids. |
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