STATISTICAL COMPARISONS OF MEANS OF SYNTHETIC VARIETIES OF MAIZE IN PREDICTIVE PHASE

STATISTICAL COMPARISONS OF MEANS OF SYNTHETIC VARIETIES OF MAIZE IN PREDICTIVE PHASE

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Field evaluation of the potential parents is required to predict the yield of the syntethic varieties that are possible to form with them; a statistical comparison of the means must provide to the plant breeder an objective basis to decide about the relative genotypic values of the different synthetics under consideration. Since the mean of a synthetic is estimated as a linear combination of several entry means, the typical procedures to compare individual entry means, such as Tukey and Duncan, are not applicable. In this study, specific methods to compare means of synthetic varieties on the basis of the information of two formulae of prediction of synthetic performance, are derived. It was found that both the number of parents and the number of common parents of the synthetic varieties under comparison, influence inversely the standard deviation of the difference of two experimental means of two synthetic varieties.

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Main Author: Sahagún-Castellanos, Jaime
Format: Digital revista
Language:spa
Published: Colegio de Postgraduados 1996
Online Access:https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1425
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spelling oai:ojs.pkp.sfu.ca:article14252020-05-14T05:46:57Z STATISTICAL COMPARISONS OF MEANS OF SYNTHETIC VARIETIES OF MAIZE IN PREDICTIVE PHASE COMPARACIONES ESTADISTICAS DE MEDIAS DE SINTETICOS DE MAIZ EN FASE PREDICTIVA Sahagún-Castellanos, Jaime Zea mays L. prediction synthetic varieties means comparisons Zea mays L. predicción variedades sintéticas comparaciones de medias Field evaluation of the potential parents is required to predict the yield of the syntethic varieties that are possible to form with them; a statistical comparison of the means must provide to the plant breeder an objective basis to decide about the relative genotypic values of the different synthetics under consideration. Since the mean of a synthetic is estimated as a linear combination of several entry means, the typical procedures to compare individual entry means, such as Tukey and Duncan, are not applicable. In this study, specific methods to compare means of synthetic varieties on the basis of the information of two formulae of prediction of synthetic performance, are derived. It was found that both the number of parents and the number of common parents of the synthetic varieties under comparison, influence inversely the standard deviation of the difference of two experimental means of two synthetic varieties. La evaluación de los progenitores se requiere para predecir el rendimiento de las diferentes variedades sintéticas que se pueden formar con ellos; la comparación estadística de sus medias debe permitir al fitomejorador tomar decisiones objetivas, acerca de los valores genotípicos relativos de los diferentes sintéticos en consideración. En virtud de que la media estimada de un sintético es una combinación lineal de varias medias de tratamientos, las pruebas típicas de comparaciones de medias individuales, como Tukey y Duncan, no resultan aplicables para este caso. En este trabajo se derivan métodos para comparar medias de variedades sintéticas con base en la información proporcionada por dos fórmulas de predicción. Con tales métodos se dedujo que la desviación estándar de una diferencia de medias es inversamente proporcional al número de progenitores y al de progenitores que tienen en común los sintéticos involucrados. Colegio de Postgraduados 1996-06-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo revisado por pares application/pdf https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1425 Agrociencia; Vol. 30 No. 2 (1996): 1996-abr-jun; 207-214 Agrociencia; Vol. 30 Núm. 2 (1996): 1996-abr-jun; 207-214 2521-9766 1405-3195 spa https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1425/1425
institution COLPOS
collection OJS
country México
countrycode MX
component Revista
access En linea
databasecode rev-agrociencia-mx
tag revista
region America del Norte
libraryname Departamento de documentación y biblioteca de COLPOS
language spa
format Digital
author Sahagún-Castellanos, Jaime
spellingShingle Sahagún-Castellanos, Jaime
STATISTICAL COMPARISONS OF MEANS OF SYNTHETIC VARIETIES OF MAIZE IN PREDICTIVE PHASE
author_facet Sahagún-Castellanos, Jaime
author_sort Sahagún-Castellanos, Jaime
title STATISTICAL COMPARISONS OF MEANS OF SYNTHETIC VARIETIES OF MAIZE IN PREDICTIVE PHASE
title_short STATISTICAL COMPARISONS OF MEANS OF SYNTHETIC VARIETIES OF MAIZE IN PREDICTIVE PHASE
title_full STATISTICAL COMPARISONS OF MEANS OF SYNTHETIC VARIETIES OF MAIZE IN PREDICTIVE PHASE
title_fullStr STATISTICAL COMPARISONS OF MEANS OF SYNTHETIC VARIETIES OF MAIZE IN PREDICTIVE PHASE
title_full_unstemmed STATISTICAL COMPARISONS OF MEANS OF SYNTHETIC VARIETIES OF MAIZE IN PREDICTIVE PHASE
title_sort statistical comparisons of means of synthetic varieties of maize in predictive phase
description Field evaluation of the potential parents is required to predict the yield of the syntethic varieties that are possible to form with them; a statistical comparison of the means must provide to the plant breeder an objective basis to decide about the relative genotypic values of the different synthetics under consideration. Since the mean of a synthetic is estimated as a linear combination of several entry means, the typical procedures to compare individual entry means, such as Tukey and Duncan, are not applicable. In this study, specific methods to compare means of synthetic varieties on the basis of the information of two formulae of prediction of synthetic performance, are derived. It was found that both the number of parents and the number of common parents of the synthetic varieties under comparison, influence inversely the standard deviation of the difference of two experimental means of two synthetic varieties.
publisher Colegio de Postgraduados
publishDate 1996
url https://www.agrociencia-colpos.org/index.php/agrociencia/article/view/1425
work_keys_str_mv AT sahaguncastellanosjaime statisticalcomparisonsofmeansofsyntheticvarietiesofmaizeinpredictivephase
AT sahaguncastellanosjaime comparacionesestadisticasdemediasdesinteticosdemaizenfasepredictiva
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