Inbreeding depression and genetic components for popping expansion and other traits in Brazilian populations of popcorn

The aim of the study was to assess inbreeding depression and determine genetic components in landrace populations of popcorn. Six Brazilian popcorn landraces: Amarelo, Beija-Flor, Branco, Rosa-claro, Roxo and Viçosa, were subjected to self-pollination. Experiments with SO populations and their selfi...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Arnhold,Emmanuel, Soriano Viana,José Marcelo, Mora,Freddy, Vieira Miranda,Glauco, Gonçalves Silva,Ricardo
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2010
Materias:	Zea mays L mprovement popping expansion popcorn genetic variance
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000300011
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-16202010000300011
record_format	dspace
spelling	oai:scielo:S0718-162020100003000112011-02-03Inbreeding depression and genetic components for popping expansion and other traits in Brazilian populations of popcornArnhold,EmmanuelSoriano Viana,José MarceloMora,FreddyVieira Miranda,GlaucoGonçalves Silva,Ricardo Zea mays L mprovement popping expansion popcorn genetic variance The aim of the study was to assess inbreeding depression and determine genetic components in landrace populations of popcorn. Six Brazilian popcorn landraces: Amarelo, Beija-Flor, Branco, Rosa-claro, Roxo and Viçosa, were subjected to self-pollination. Experiments with SO populations and their selfing populations (SI) were conducted in a randomized complete block design. The estimates of inbreeding depression varied from 1.2% (popping expansion) to 79% (grain yield). The gene action was predominantly additive for plant height, ear height and hundred-grain-weight. The dominance genetic effects were important for index of prolificacy and grain yield. The genetic effect of popping expansion was bidirectional with nuil dominance and a predominance of additive gene effects. Based on these results, it was possible to identify popcorn populations suitable to extract inbred lines, develop hybrids and use in population improvement. The present study also confirmed that popping expansion is a trait that can be improved efficiently by recurrent selection programs of popcorn.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.37 n.3 20102010-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000300011en10.4067/S0718-16202010000300011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Zea mays L mprovement popping expansion popcorn genetic variance
spellingShingle	Zea mays L mprovement popping expansion popcorn genetic variance Arnhold,Emmanuel Soriano Viana,José Marcelo Mora,Freddy Vieira Miranda,Glauco Gonçalves Silva,Ricardo Inbreeding depression and genetic components for popping expansion and other traits in Brazilian populations of popcorn
description	The aim of the study was to assess inbreeding depression and determine genetic components in landrace populations of popcorn. Six Brazilian popcorn landraces: Amarelo, Beija-Flor, Branco, Rosa-claro, Roxo and Viçosa, were subjected to self-pollination. Experiments with SO populations and their selfing populations (SI) were conducted in a randomized complete block design. The estimates of inbreeding depression varied from 1.2% (popping expansion) to 79% (grain yield). The gene action was predominantly additive for plant height, ear height and hundred-grain-weight. The dominance genetic effects were important for index of prolificacy and grain yield. The genetic effect of popping expansion was bidirectional with nuil dominance and a predominance of additive gene effects. Based on these results, it was possible to identify popcorn populations suitable to extract inbred lines, develop hybrids and use in population improvement. The present study also confirmed that popping expansion is a trait that can be improved efficiently by recurrent selection programs of popcorn.
author	Arnhold,Emmanuel Soriano Viana,José Marcelo Mora,Freddy Vieira Miranda,Glauco Gonçalves Silva,Ricardo
author_facet	Arnhold,Emmanuel Soriano Viana,José Marcelo Mora,Freddy Vieira Miranda,Glauco Gonçalves Silva,Ricardo
author_sort	Arnhold,Emmanuel
title	Inbreeding depression and genetic components for popping expansion and other traits in Brazilian populations of popcorn
title_short	Inbreeding depression and genetic components for popping expansion and other traits in Brazilian populations of popcorn
title_full	Inbreeding depression and genetic components for popping expansion and other traits in Brazilian populations of popcorn
title_fullStr	Inbreeding depression and genetic components for popping expansion and other traits in Brazilian populations of popcorn
title_full_unstemmed	Inbreeding depression and genetic components for popping expansion and other traits in Brazilian populations of popcorn
title_sort	inbreeding depression and genetic components for popping expansion and other traits in brazilian populations of popcorn
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000300011
work_keys_str_mv	AT arnholdemmanuel inbreedingdepressionandgeneticcomponentsforpoppingexpansionandothertraitsinbrazilianpopulationsofpopcorn AT sorianovianajosemarcelo inbreedingdepressionandgeneticcomponentsforpoppingexpansionandothertraitsinbrazilianpopulationsofpopcorn AT morafreddy inbreedingdepressionandgeneticcomponentsforpoppingexpansionandothertraitsinbrazilianpopulationsofpopcorn AT vieiramirandaglauco inbreedingdepressionandgeneticcomponentsforpoppingexpansionandothertraitsinbrazilianpopulationsofpopcorn AT goncalvessilvaricardo inbreedingdepressionandgeneticcomponentsforpoppingexpansionandothertraitsinbrazilianpopulationsofpopcorn
_version_	1714202127677521920

Inbreeding depression and genetic components for popping expansion and other traits in Brazilian populations of popcorn

Ejemplares similares