Seasonal and genetic influences on sex expression in a backcrossed segregating papaya population

Detalhes bibliográficos
Autor(a) principal: Ramos,Helaine Christine Cancela
Data de Publicação: 2011
Outros Autores: Pereira,Messias Gonzaga, Silva,Francisco Filho da, Viana,Alexandre Pio, Ferreguetti,Geraldo Antônio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Crop Breeding and Applied Biotechnology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332011000200001
Resumo: This study aimed to evaluate the genetic and seasonal influence on sex expression in segregating generations of papaya elite and backcrossed genotypes. In the four seasons of the 2005/2006 growing season, 200 hermaphrodite plants were evaluated. Of the eight studied traits, four were related to flowering and four to fruiting, i.e., to the percentage of normal, deformed, sterile, and total number of flowers, as well as the percentage of total, carpelloid, pentandric, and marketable fruits. Significant differences due to the genotype x season interaction were verified. Based on the genotypic determination coefficient and the variation index it was concluded that winter and spring are most appropriate for the selection of superior genotypes. Thus, selection in early stages of plant development is more successful, indicating that the physiological age may also be a factor involved in the expression of the above traits.
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spelling Seasonal and genetic influences on sex expression in a backcrossed segregating papaya populationCarica papaya L.flower malformationsex reversalseasonalityThis study aimed to evaluate the genetic and seasonal influence on sex expression in segregating generations of papaya elite and backcrossed genotypes. In the four seasons of the 2005/2006 growing season, 200 hermaphrodite plants were evaluated. Of the eight studied traits, four were related to flowering and four to fruiting, i.e., to the percentage of normal, deformed, sterile, and total number of flowers, as well as the percentage of total, carpelloid, pentandric, and marketable fruits. Significant differences due to the genotype x season interaction were verified. Based on the genotypic determination coefficient and the variation index it was concluded that winter and spring are most appropriate for the selection of superior genotypes. Thus, selection in early stages of plant development is more successful, indicating that the physiological age may also be a factor involved in the expression of the above traits.Crop Breeding and Applied Biotechnology2011-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332011000200001Crop Breeding and Applied Biotechnology v.11 n.2 2011reponame:Crop Breeding and Applied Biotechnologyinstname:Sociedade Brasileira de Melhoramento de Plantasinstacron:CBAB10.1590/S1984-70332011000200001info:eu-repo/semantics/openAccessRamos,Helaine Christine CancelaPereira,Messias GonzagaSilva,Francisco Filho daViana,Alexandre PioFerreguetti,Geraldo Antônioeng2011-09-08T00:00:00Zoai:scielo:S1984-70332011000200001Revistahttps://cbab.sbmp.org.br/#ONGhttps://old.scielo.br/oai/scielo-oai.phpcbabjournal@gmail.com||cbab@ufv.br1984-70331518-7853opendoar:2011-09-08T00:00Crop Breeding and Applied Biotechnology - Sociedade Brasileira de Melhoramento de Plantasfalse
dc.title.none.fl_str_mv Seasonal and genetic influences on sex expression in a backcrossed segregating papaya population
title Seasonal and genetic influences on sex expression in a backcrossed segregating papaya population
spellingShingle Seasonal and genetic influences on sex expression in a backcrossed segregating papaya population
Ramos,Helaine Christine Cancela
Carica papaya L.
flower malformation
sex reversal
seasonality
title_short Seasonal and genetic influences on sex expression in a backcrossed segregating papaya population
title_full Seasonal and genetic influences on sex expression in a backcrossed segregating papaya population
title_fullStr Seasonal and genetic influences on sex expression in a backcrossed segregating papaya population
title_full_unstemmed Seasonal and genetic influences on sex expression in a backcrossed segregating papaya population
title_sort Seasonal and genetic influences on sex expression in a backcrossed segregating papaya population
author Ramos,Helaine Christine Cancela
author_facet Ramos,Helaine Christine Cancela
Pereira,Messias Gonzaga
Silva,Francisco Filho da
Viana,Alexandre Pio
Ferreguetti,Geraldo Antônio
author_role author
author2 Pereira,Messias Gonzaga
Silva,Francisco Filho da
Viana,Alexandre Pio
Ferreguetti,Geraldo Antônio
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Ramos,Helaine Christine Cancela
Pereira,Messias Gonzaga
Silva,Francisco Filho da
Viana,Alexandre Pio
Ferreguetti,Geraldo Antônio
dc.subject.por.fl_str_mv Carica papaya L.
flower malformation
sex reversal
seasonality
topic Carica papaya L.
flower malformation
sex reversal
seasonality
description This study aimed to evaluate the genetic and seasonal influence on sex expression in segregating generations of papaya elite and backcrossed genotypes. In the four seasons of the 2005/2006 growing season, 200 hermaphrodite plants were evaluated. Of the eight studied traits, four were related to flowering and four to fruiting, i.e., to the percentage of normal, deformed, sterile, and total number of flowers, as well as the percentage of total, carpelloid, pentandric, and marketable fruits. Significant differences due to the genotype x season interaction were verified. Based on the genotypic determination coefficient and the variation index it was concluded that winter and spring are most appropriate for the selection of superior genotypes. Thus, selection in early stages of plant development is more successful, indicating that the physiological age may also be a factor involved in the expression of the above traits.
publishDate 2011
dc.date.none.fl_str_mv 2011-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332011000200001
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332011000200001
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1984-70332011000200001
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Crop Breeding and Applied Biotechnology
publisher.none.fl_str_mv Crop Breeding and Applied Biotechnology
dc.source.none.fl_str_mv Crop Breeding and Applied Biotechnology v.11 n.2 2011
reponame:Crop Breeding and Applied Biotechnology
instname:Sociedade Brasileira de Melhoramento de Plantas
instacron:CBAB
instname_str Sociedade Brasileira de Melhoramento de Plantas
instacron_str CBAB
institution CBAB
reponame_str Crop Breeding and Applied Biotechnology
collection Crop Breeding and Applied Biotechnology
repository.name.fl_str_mv Crop Breeding and Applied Biotechnology - Sociedade Brasileira de Melhoramento de Plantas
repository.mail.fl_str_mv cbabjournal@gmail.com||cbab@ufv.br
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