Growth simulation of early corn landraces for specific dry land regions.

The use of crop modelingmethodology for the selection of early materials adapted tothose regions was considered in this assay. A growth analysisof 99 early corn landraces was conducted at INIFAP.s BajioExperiment Station (CEBAJ) during the summer of 1997.Using the CERES-MAIZE crop model, the genetic...

Descripción completa

Autores Principales: Preciado, Ricardo E., Erazo, Mauricio, Quijano, J. Ángel, Terrón, Arturo, Paredes, Roberto
Formato: Artículo
Idioma: Español
Publicado: Universidad de Costa Rica 2013
Acceso en línea: http://revistas.ucr.ac.cr/index.php/agromeso/article/view/12066
http://hdl.handle.net/10669/17715
Sumario: The use of crop modelingmethodology for the selection of early materials adapted tothose regions was considered in this assay. A growth analysisof 99 early corn landraces was conducted at INIFAP.s BajioExperiment Station (CEBAJ) during the summer of 1997.Using the CERES-MAIZE crop model, the geneticcoefficients were adjusted with such information. Eightgroups were identified in the 99 landraces according to the"emergence to tasseling" and "tasselling to maturity" values(P1 and P5). With these results, it is possible to simulate yieldpotential of the landraces under different rainfedenvironments using soil and historical weather information.As an example, the genetic coefficients of the eight cornlandraces representing each group, were used to simulatetheir yield potential at the northern Guanajuato region, wherecorn is grown mainly under dry land conditions, (300 to 600mm of annual precipitation). Simulation was conducted usingseasonal routine of CERES-MAIZE crop model included onDSSATV 3.1. Eleven years of historical weather informationwere used for this simulation. For this location, Landrace 36presented the highest grain yield under both conditions. AtCEBAJ, Landrace 36 showed the lowest yield out of eight.These results support the use of crop modeling in theselection of genotypes for specific environments.