Reduced inbreeding depression in separate generations of onions
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , , |
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=S1984-70332020000200201 |
Resumo: | Abstract Mitigating reductions in vigor in onion seed production has been a great challenge to breeding programs. Therefore, we compared the effects of inbreeding depression among populations obtained from self-fertilization and crossbreeding with two and three plants. We evaluated eleven populations and three breeding methods (two and three-plant crossbreeding, and self-fertilization of one plant) and measured the characteristics related to seed yield (plant appearance, stem vigor, number of umbels, flowering uniformity, fruit setting, and resistance to Alternaria) from 2014 to 2015. Thirteen RAPD molecular markers were used to determine the genetic divergence among populations derived from different breeding methods. We found that inbreeding depression affects plant vigor in early generations that have greater heterozygosity. Three-plant crossbreeding results in greater seed yield in populations with low levels of inbreeding. The populations obtained from self-fertilization and two- and three-plant crossbreeding were genetically similar, demonstrating the efficiency of obtaining inbred lines without genetic divergence. |
id |
CBAB-1_fb9de27dbcbe4f61e11f383a79264450 |
---|---|
oai_identifier_str |
oai:scielo:S1984-70332020000200201 |
network_acronym_str |
CBAB-1 |
network_name_str |
Crop Breeding and Applied Biotechnology |
repository_id_str |
|
spelling |
Reduced inbreeding depression in separate generations of onionsAllium cepa L.intercrossinggenetic segregationcrossbreedingendogamic level.Abstract Mitigating reductions in vigor in onion seed production has been a great challenge to breeding programs. Therefore, we compared the effects of inbreeding depression among populations obtained from self-fertilization and crossbreeding with two and three plants. We evaluated eleven populations and three breeding methods (two and three-plant crossbreeding, and self-fertilization of one plant) and measured the characteristics related to seed yield (plant appearance, stem vigor, number of umbels, flowering uniformity, fruit setting, and resistance to Alternaria) from 2014 to 2015. Thirteen RAPD molecular markers were used to determine the genetic divergence among populations derived from different breeding methods. We found that inbreeding depression affects plant vigor in early generations that have greater heterozygosity. Three-plant crossbreeding results in greater seed yield in populations with low levels of inbreeding. The populations obtained from self-fertilization and two- and three-plant crossbreeding were genetically similar, demonstrating the efficiency of obtaining inbred lines without genetic divergence.Crop Breeding and Applied Biotechnology2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332020000200201Crop Breeding and Applied Biotechnology v.20 n.2 2020reponame:Crop Breeding and Applied Biotechnologyinstname:Sociedade Brasileira de Melhoramento de Plantasinstacron:CBAB10.1590/1984-70332020v20n2a22info:eu-repo/semantics/openAccessMachado,Daniel Lucas MagalhãesMaciel,Gabriel MascarenhasLuz,José Magno QueirozFreitas,Joelson André deNogueira,Ana Paula OliveiraOliveira,Roberta Camargos deeng2020-07-15T00:00:00Zoai:scielo:S1984-70332020000200201Revistahttps://cbab.sbmp.org.br/#ONGhttps://old.scielo.br/oai/scielo-oai.phpcbabjournal@gmail.com||cbab@ufv.br1984-70331518-7853opendoar:2020-07-15T00:00Crop Breeding and Applied Biotechnology - Sociedade Brasileira de Melhoramento de Plantasfalse |
dc.title.none.fl_str_mv |
Reduced inbreeding depression in separate generations of onions |
title |
Reduced inbreeding depression in separate generations of onions |
spellingShingle |
Reduced inbreeding depression in separate generations of onions Machado,Daniel Lucas Magalhães Allium cepa L. intercrossing genetic segregation crossbreeding endogamic level. |
title_short |
Reduced inbreeding depression in separate generations of onions |
title_full |
Reduced inbreeding depression in separate generations of onions |
title_fullStr |
Reduced inbreeding depression in separate generations of onions |
title_full_unstemmed |
Reduced inbreeding depression in separate generations of onions |
title_sort |
Reduced inbreeding depression in separate generations of onions |
author |
Machado,Daniel Lucas Magalhães |
author_facet |
Machado,Daniel Lucas Magalhães Maciel,Gabriel Mascarenhas Luz,José Magno Queiroz Freitas,Joelson André de Nogueira,Ana Paula Oliveira Oliveira,Roberta Camargos de |
author_role |
author |
author2 |
Maciel,Gabriel Mascarenhas Luz,José Magno Queiroz Freitas,Joelson André de Nogueira,Ana Paula Oliveira Oliveira,Roberta Camargos de |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Machado,Daniel Lucas Magalhães Maciel,Gabriel Mascarenhas Luz,José Magno Queiroz Freitas,Joelson André de Nogueira,Ana Paula Oliveira Oliveira,Roberta Camargos de |
dc.subject.por.fl_str_mv |
Allium cepa L. intercrossing genetic segregation crossbreeding endogamic level. |
topic |
Allium cepa L. intercrossing genetic segregation crossbreeding endogamic level. |
description |
Abstract Mitigating reductions in vigor in onion seed production has been a great challenge to breeding programs. Therefore, we compared the effects of inbreeding depression among populations obtained from self-fertilization and crossbreeding with two and three plants. We evaluated eleven populations and three breeding methods (two and three-plant crossbreeding, and self-fertilization of one plant) and measured the characteristics related to seed yield (plant appearance, stem vigor, number of umbels, flowering uniformity, fruit setting, and resistance to Alternaria) from 2014 to 2015. Thirteen RAPD molecular markers were used to determine the genetic divergence among populations derived from different breeding methods. We found that inbreeding depression affects plant vigor in early generations that have greater heterozygosity. Three-plant crossbreeding results in greater seed yield in populations with low levels of inbreeding. The populations obtained from self-fertilization and two- and three-plant crossbreeding were genetically similar, demonstrating the efficiency of obtaining inbred lines without genetic divergence. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
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=S1984-70332020000200201 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332020000200201 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1984-70332020v20n2a22 |
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.20 n.2 2020 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 |
_version_ |
1754209188054040576 |