Determination of genetic coefficients of three spring wheat varieties under a Mediterranean environment applying the DSSAT model

The impact of climate change requires developing and validating models that help to project possible scenarios that must adapt to new varieties. This study seeks to validate and calibrate the Decision Support System for Agrotechnology Transfer (DSSAT) model as a tool that facilitates the characteriz...

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Autores principales:	Maldonado-Ibarra,Isaac, Rodriguez,Gabriel R, Castillo-Rosales,Dalma
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2015
Materias:	Climate change DSSAT model genetic coefficients simulation Triticum aestivum
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000500006
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spelling	oai:scielo:S0718-583920150005000062018-10-01Determination of genetic coefficients of three spring wheat varieties under a Mediterranean environment applying the DSSAT modelMaldonado-Ibarra,IsaacRodriguez,Gabriel RCastillo-Rosales,Dalma Climate change DSSAT model genetic coefficients simulation Triticum aestivum The impact of climate change requires developing and validating models that help to project possible scenarios that must adapt to new varieties. This study seeks to validate and calibrate the Decision Support System for Agrotechnology Transfer (DSSAT) model as a tool that facilitates the characterization of the behavior of new varieties in the face of new scenarios generated by climate change. The determination of genetic coefficients of three bread wheat (Triticum aestivum L.) varieties was considered in the methodology; this was done with the database of the historical records of the Instituto de Investigaciones Agropecuarias (INIA) Wheat Breeding Program for the 2000 to 2011 period. Once the adjustment level of the model was dealt with, it was feasible to obtain genetic coefficients of three spring wheat varieties (Pandora-INIA, Kipa-INIA, and Millan-INIA); days from planting to anthesis variable exhibited RMSE values fluctuating between 3.5 and 9.7 depending on the variety. For total duration of days to maturity, ’Millan-INIA’ exhibited a very good adjustment (RMSE = 0.25) as compared to ’Pandora-INIA’ (RMSE = 1.35) and ’Kipa-INIA’ (12.22). Furthermore, the coefficient of determination of the genetic coefficients indicates that the varieties have minimum vernalization requirements; these are similar to the photoperiod between ’Pandora-INIA’ and ’Millan-INIA’ and lower in the case of ’Kipa-INIA’. Thermal requirements for grain filling, biomass production, and plant height did not exhibit any important differences among varieties. Finally, the methodology allowed calibrating the DSSAT model and achieving a good predictive level of yields for the three varieties. The plant development parameters must be studied in greater detail because of the low association between simulated and observed values.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.75 n.4 20152015-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000500006en10.4067/S0718-58392015000500006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Climate change DSSAT model genetic coefficients simulation Triticum aestivum
spellingShingle	Climate change DSSAT model genetic coefficients simulation Triticum aestivum Maldonado-Ibarra,Isaac Rodriguez,Gabriel R Castillo-Rosales,Dalma Determination of genetic coefficients of three spring wheat varieties under a Mediterranean environment applying the DSSAT model
description	The impact of climate change requires developing and validating models that help to project possible scenarios that must adapt to new varieties. This study seeks to validate and calibrate the Decision Support System for Agrotechnology Transfer (DSSAT) model as a tool that facilitates the characterization of the behavior of new varieties in the face of new scenarios generated by climate change. The determination of genetic coefficients of three bread wheat (Triticum aestivum L.) varieties was considered in the methodology; this was done with the database of the historical records of the Instituto de Investigaciones Agropecuarias (INIA) Wheat Breeding Program for the 2000 to 2011 period. Once the adjustment level of the model was dealt with, it was feasible to obtain genetic coefficients of three spring wheat varieties (Pandora-INIA, Kipa-INIA, and Millan-INIA); days from planting to anthesis variable exhibited RMSE values fluctuating between 3.5 and 9.7 depending on the variety. For total duration of days to maturity, ’Millan-INIA’ exhibited a very good adjustment (RMSE = 0.25) as compared to ’Pandora-INIA’ (RMSE = 1.35) and ’Kipa-INIA’ (12.22). Furthermore, the coefficient of determination of the genetic coefficients indicates that the varieties have minimum vernalization requirements; these are similar to the photoperiod between ’Pandora-INIA’ and ’Millan-INIA’ and lower in the case of ’Kipa-INIA’. Thermal requirements for grain filling, biomass production, and plant height did not exhibit any important differences among varieties. Finally, the methodology allowed calibrating the DSSAT model and achieving a good predictive level of yields for the three varieties. The plant development parameters must be studied in greater detail because of the low association between simulated and observed values.
author	Maldonado-Ibarra,Isaac Rodriguez,Gabriel R Castillo-Rosales,Dalma
author_facet	Maldonado-Ibarra,Isaac Rodriguez,Gabriel R Castillo-Rosales,Dalma
author_sort	Maldonado-Ibarra,Isaac
title	Determination of genetic coefficients of three spring wheat varieties under a Mediterranean environment applying the DSSAT model
title_short	Determination of genetic coefficients of three spring wheat varieties under a Mediterranean environment applying the DSSAT model
title_full	Determination of genetic coefficients of three spring wheat varieties under a Mediterranean environment applying the DSSAT model
title_fullStr	Determination of genetic coefficients of three spring wheat varieties under a Mediterranean environment applying the DSSAT model
title_full_unstemmed	Determination of genetic coefficients of three spring wheat varieties under a Mediterranean environment applying the DSSAT model
title_sort	determination of genetic coefficients of three spring wheat varieties under a mediterranean environment applying the dssat model
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000500006
work_keys_str_mv	AT maldonadoibarraisaac determinationofgeneticcoefficientsofthreespringwheatvarietiesunderamediterraneanenvironmentapplyingthedssatmodel AT rodriguezgabrielr determinationofgeneticcoefficientsofthreespringwheatvarietiesunderamediterraneanenvironmentapplyingthedssatmodel AT castillorosalesdalma determinationofgeneticcoefficientsofthreespringwheatvarietiesunderamediterraneanenvironmentapplyingthedssatmodel
_version_	1714205352949448704

Determination of genetic coefficients of three spring wheat varieties under a Mediterranean environment applying the DSSAT model

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