Heterozygosity following half-sib recurrent selection in popcorn using isoenzyme markers

Isozyme biochemical marker may be useful tool for genomic analysis of maize populations undergoing recurrent selection. Thus, isozymes markers was utilized for assess the changes in the genetic variability and distance in a Brazilian composite population of popcorn following four cycles of recurrent...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Pereira,Liz Kazmirczak, Scapim,Carlos Alberto, Mangolin,Claudete Aparecida, Machado,Maria de Fátima Pires da Silva, Pacheco,Cleso Antônio Patto, Mora,Freddy
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2008
Materias:	allozymes frequency genetic distance selection cycles Zea mays
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000100004
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-34582008000100004
record_format	dspace
spelling	oai:scielo:S0717-345820080001000042008-10-28Heterozygosity following half-sib recurrent selection in popcorn using isoenzyme markersPereira,Liz KazmirczakScapim,Carlos AlbertoMangolin,Claudete AparecidaMachado,Maria de Fátima Pires da SilvaPacheco,Cleso Antônio PattoMora,Freddy allozymes frequency genetic distance selection cycles Zea mays Isozyme biochemical marker may be useful tool for genomic analysis of maize populations undergoing recurrent selection. Thus, isozymes markers was utilized for assess the changes in the genetic variability and distance in a Brazilian composite population of popcorn following four cycles of recurrent selection for yield. One hundred and ninety-six half-sib families were evaluated from each cycle and the ten highest-yielding families (5.2%) were recombined to produce the next cycle. Isozyme analysis considered 80 seedlings per cycle. Simple linear regression equations were estimated among the allele frequencies in each locus in function of the selection cycles, the genetic distances among the cycles and the average heterozygosity per locus for each cycle. Regression analysis did not reveal any common trend for changes in allele frequencies presumably due to selection. The estimates of the number of polymorphic locus, of the mean of allele per locus and the mean heterozygosity did not reveal any reduction in variability. It was concluded that four selection cycles did not cause relevant changes in the variability or genetic distance among the selection cycles of CMS-43 popcorn population. Isozymes markers analysis showed that the number of recombined half-sib families in recurrent selection was suitable.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.11 n.1 20082008-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000100004en10.4067/S0717-34582008000100004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	allozymes frequency genetic distance selection cycles Zea mays
spellingShingle	allozymes frequency genetic distance selection cycles Zea mays Pereira,Liz Kazmirczak Scapim,Carlos Alberto Mangolin,Claudete Aparecida Machado,Maria de Fátima Pires da Silva Pacheco,Cleso Antônio Patto Mora,Freddy Heterozygosity following half-sib recurrent selection in popcorn using isoenzyme markers
description	Isozyme biochemical marker may be useful tool for genomic analysis of maize populations undergoing recurrent selection. Thus, isozymes markers was utilized for assess the changes in the genetic variability and distance in a Brazilian composite population of popcorn following four cycles of recurrent selection for yield. One hundred and ninety-six half-sib families were evaluated from each cycle and the ten highest-yielding families (5.2%) were recombined to produce the next cycle. Isozyme analysis considered 80 seedlings per cycle. Simple linear regression equations were estimated among the allele frequencies in each locus in function of the selection cycles, the genetic distances among the cycles and the average heterozygosity per locus for each cycle. Regression analysis did not reveal any common trend for changes in allele frequencies presumably due to selection. The estimates of the number of polymorphic locus, of the mean of allele per locus and the mean heterozygosity did not reveal any reduction in variability. It was concluded that four selection cycles did not cause relevant changes in the variability or genetic distance among the selection cycles of CMS-43 popcorn population. Isozymes markers analysis showed that the number of recombined half-sib families in recurrent selection was suitable.
author	Pereira,Liz Kazmirczak Scapim,Carlos Alberto Mangolin,Claudete Aparecida Machado,Maria de Fátima Pires da Silva Pacheco,Cleso Antônio Patto Mora,Freddy
author_facet	Pereira,Liz Kazmirczak Scapim,Carlos Alberto Mangolin,Claudete Aparecida Machado,Maria de Fátima Pires da Silva Pacheco,Cleso Antônio Patto Mora,Freddy
author_sort	Pereira,Liz Kazmirczak
title	Heterozygosity following half-sib recurrent selection in popcorn using isoenzyme markers
title_short	Heterozygosity following half-sib recurrent selection in popcorn using isoenzyme markers
title_full	Heterozygosity following half-sib recurrent selection in popcorn using isoenzyme markers
title_fullStr	Heterozygosity following half-sib recurrent selection in popcorn using isoenzyme markers
title_full_unstemmed	Heterozygosity following half-sib recurrent selection in popcorn using isoenzyme markers
title_sort	heterozygosity following half-sib recurrent selection in popcorn using isoenzyme markers
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000100004
work_keys_str_mv	AT pereiralizkazmirczak heterozygosityfollowinghalfsibrecurrentselectioninpopcornusingisoenzymemarkers AT scapimcarlosalberto heterozygosityfollowinghalfsibrecurrentselectioninpopcornusingisoenzymemarkers AT mangolinclaudeteaparecida heterozygosityfollowinghalfsibrecurrentselectioninpopcornusingisoenzymemarkers AT machadomariadefatimapiresdasilva heterozygosityfollowinghalfsibrecurrentselectioninpopcornusingisoenzymemarkers AT pachecoclesoantoniopatto heterozygosityfollowinghalfsibrecurrentselectioninpopcornusingisoenzymemarkers AT morafreddy heterozygosityfollowinghalfsibrecurrentselectioninpopcornusingisoenzymemarkers
_version_	1718441778407800832

Heterozygosity following half-sib recurrent selection in popcorn using isoenzyme markers

Ejemplares similares