Variability, heritability, and correlations of agronomic traits in an onion landrace and derived S1 lines

This study assessed variability, heritability and correlations of agronomic traits in an onion (Allium cepa L.) landrace and derived S1 lines after a single selfing generation. Bulbs used to develop S1 lines were selected for shape, colour and high number of skins. Fifty-one S1 lines and the origi...

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Main Authors:	Bettina Porta, Mercedes Rivas, Lucía Gutiérrez, Guillermo A Galván
Format:	Article
Language:	English
Published:	Brazilian Society of Plant Breeding 2014-03-01
Series:	Crop Breeding and Applied Biotechnology
Subjects:	Selfing transgressive segregation inbreeding depression dry matter
Online Access:	http://www.sbmp.org.br/cbab/siscbab/uploads/c8eb9792-90d9-defb.pdf

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spelling	doaj-83361969b04e47ee933438baeeafb83a2020-11-25T01:43:09ZengBrazilian Society of Plant BreedingCrop Breeding and Applied Biotechnology1518-78531984-70332014-03-011412935Variability, heritability, and correlations of agronomic traits in an onion landrace and derived S1 linesBettina Porta0Mercedes Rivas1Lucía Gutiérrez2Guillermo A Galván3Universidad de la República, Facultad de Agronomía, Departamento de Biología Vegetal, Avenida Garzón, 780, Montevideo, Uruguay.Universidad de la República, Facultad de Agronomía, Departamento de Biología Vegetal, Avenida Garzón, 780, Montevideo, Uruguay.Universidad de la República, Facultad de Agronomía, Departamento de Biometría, Estadística y ComputaciónUniversidad de la República, Facultad de Agronomía, Departamento de Producción Vegetal, Centro Regional Sur, Camino Follé, km 36, Canelones, UruguayThis study assessed variability, heritability and correlations of agronomic traits in an onion (Allium cepa L.) landrace and derived S1 lines after a single selfing generation. Bulbs used to develop S1 lines were selected for shape, colour and high number of skins. Fifty-one S1 lines and the original population were evaluated using an incomplete random block design. The original population and S1 lines were highly diverse for quantitative and qualitative traits. S1 lines were significantly different, with transgressive segregation for number and maximum leaf length, bulbing index, bulb weight, diameter, and dry matter content. Variances within S1 lines were greater than among S1 lines for all traits. Bulb colour and number of skins responded to selection. Heritabilities for dry matter and soluble solids were 52.6% and 36.1% respectively. Both traits were highly correlated. The development of S1 lines allowed the expression of genetic variation and the identification of better genotypes for agronomic traits of interest.http://www.sbmp.org.br/cbab/siscbab/uploads/c8eb9792-90d9-defb.pdfSelfingtransgressive segregationinbreeding depressiondry matter
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Bettina Porta Mercedes Rivas Lucía Gutiérrez Guillermo A Galván
spellingShingle	Bettina Porta Mercedes Rivas Lucía Gutiérrez Guillermo A Galván Variability, heritability, and correlations of agronomic traits in an onion landrace and derived S1 lines Crop Breeding and Applied Biotechnology Selfing transgressive segregation inbreeding depression dry matter
author_facet	Bettina Porta Mercedes Rivas Lucía Gutiérrez Guillermo A Galván
author_sort	Bettina Porta
title	Variability, heritability, and correlations of agronomic traits in an onion landrace and derived S1 lines
title_short	Variability, heritability, and correlations of agronomic traits in an onion landrace and derived S1 lines
title_full	Variability, heritability, and correlations of agronomic traits in an onion landrace and derived S1 lines
title_fullStr	Variability, heritability, and correlations of agronomic traits in an onion landrace and derived S1 lines
title_full_unstemmed	Variability, heritability, and correlations of agronomic traits in an onion landrace and derived S1 lines
title_sort	variability, heritability, and correlations of agronomic traits in an onion landrace and derived s1 lines
publisher	Brazilian Society of Plant Breeding
series	Crop Breeding and Applied Biotechnology
issn	1518-7853 1984-7033
publishDate	2014-03-01
description	This study assessed variability, heritability and correlations of agronomic traits in an onion (Allium cepa L.) landrace and derived S1 lines after a single selfing generation. Bulbs used to develop S1 lines were selected for shape, colour and high number of skins. Fifty-one S1 lines and the original population were evaluated using an incomplete random block design. The original population and S1 lines were highly diverse for quantitative and qualitative traits. S1 lines were significantly different, with transgressive segregation for number and maximum leaf length, bulbing index, bulb weight, diameter, and dry matter content. Variances within S1 lines were greater than among S1 lines for all traits. Bulb colour and number of skins responded to selection. Heritabilities for dry matter and soluble solids were 52.6% and 36.1% respectively. Both traits were highly correlated. The development of S1 lines allowed the expression of genetic variation and the identification of better genotypes for agronomic traits of interest.
topic	Selfing transgressive segregation inbreeding depression dry matter
url	http://www.sbmp.org.br/cbab/siscbab/uploads/c8eb9792-90d9-defb.pdf
work_keys_str_mv	AT bettinaporta variabilityheritabilityandcorrelationsofagronomictraitsinanonionlandraceandderiveds1lines AT mercedesrivas variabilityheritabilityandcorrelationsofagronomictraitsinanonionlandraceandderiveds1lines AT luciagutierrez variabilityheritabilityandcorrelationsofagronomictraitsinanonionlandraceandderiveds1lines AT guillermoagalvan variabilityheritabilityandcorrelationsofagronomictraitsinanonionlandraceandderiveds1lines
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Variability, heritability, and correlations of agronomic traits in an onion landrace and derived S1 lines

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