Optimizing the number of progenies and replications in plant breeding experiments
Autor(a) principal: | |
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Data de Publicação: | 2013 |
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=S1984-70332013000300001 |
Resumo: | A determination criterion was proposed for the number of replications, r, and of evaluated progenies, Nr, given P experimental plots, with Nr=P/r, and n progenies to be selected; its application was discussed in the selection of progenies of bulk populations, derived from two homozygous parents. For a known heritability at the plot level, h²0, there is a critical n below which the gain is greater with selection evaluating P/(r+1) progenies in r+1 than P/r progenies in r replications. Different h²0 scenarios were simulated in the F2 and F∞ generations, assuming no dominance. It was demonstrated that at any h²0 , if n > 18.5% of P, larger gains are obtained by assuming Nr = P, showing that the augmented block design could be used in the early stages of breeding programs. The higherh²0, the higher must be the selection intensity to justify the use of additional replications. |
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Crop Breeding and Applied Biotechnology |
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Optimizing the number of progenies and replications in plant breeding experimentsSelection gainspopulation sample sizenumber of selected progeniesselection limitsA determination criterion was proposed for the number of replications, r, and of evaluated progenies, Nr, given P experimental plots, with Nr=P/r, and n progenies to be selected; its application was discussed in the selection of progenies of bulk populations, derived from two homozygous parents. For a known heritability at the plot level, h²0, there is a critical n below which the gain is greater with selection evaluating P/(r+1) progenies in r+1 than P/r progenies in r replications. Different h²0 scenarios were simulated in the F2 and F∞ generations, assuming no dominance. It was demonstrated that at any h²0 , if n > 18.5% of P, larger gains are obtained by assuming Nr = P, showing that the augmented block design could be used in the early stages of breeding programs. The higherh²0, the higher must be the selection intensity to justify the use of additional replications.Crop Breeding and Applied Biotechnology2013-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332013000300001Crop Breeding and Applied Biotechnology v.13 n.3 2013reponame:Crop Breeding and Applied Biotechnologyinstname:Sociedade Brasileira de Melhoramento de Plantasinstacron:CBAB10.1590/S1984-70332013000300001info:eu-repo/semantics/openAccessSilva Filho,João Luís daeng2013-12-03T00:00:00Zoai:scielo:S1984-70332013000300001Revistahttps://cbab.sbmp.org.br/#ONGhttps://old.scielo.br/oai/scielo-oai.phpcbabjournal@gmail.com||cbab@ufv.br1984-70331518-7853opendoar:2013-12-03T00:00Crop Breeding and Applied Biotechnology - Sociedade Brasileira de Melhoramento de Plantasfalse |
dc.title.none.fl_str_mv |
Optimizing the number of progenies and replications in plant breeding experiments |
title |
Optimizing the number of progenies and replications in plant breeding experiments |
spellingShingle |
Optimizing the number of progenies and replications in plant breeding experiments Silva Filho,João Luís da Selection gains population sample size number of selected progenies selection limits |
title_short |
Optimizing the number of progenies and replications in plant breeding experiments |
title_full |
Optimizing the number of progenies and replications in plant breeding experiments |
title_fullStr |
Optimizing the number of progenies and replications in plant breeding experiments |
title_full_unstemmed |
Optimizing the number of progenies and replications in plant breeding experiments |
title_sort |
Optimizing the number of progenies and replications in plant breeding experiments |
author |
Silva Filho,João Luís da |
author_facet |
Silva Filho,João Luís da |
author_role |
author |
dc.contributor.author.fl_str_mv |
Silva Filho,João Luís da |
dc.subject.por.fl_str_mv |
Selection gains population sample size number of selected progenies selection limits |
topic |
Selection gains population sample size number of selected progenies selection limits |
description |
A determination criterion was proposed for the number of replications, r, and of evaluated progenies, Nr, given P experimental plots, with Nr=P/r, and n progenies to be selected; its application was discussed in the selection of progenies of bulk populations, derived from two homozygous parents. For a known heritability at the plot level, h²0, there is a critical n below which the gain is greater with selection evaluating P/(r+1) progenies in r+1 than P/r progenies in r replications. Different h²0 scenarios were simulated in the F2 and F∞ generations, assuming no dominance. It was demonstrated that at any h²0 , if n > 18.5% of P, larger gains are obtained by assuming Nr = P, showing that the augmented block design could be used in the early stages of breeding programs. The higherh²0, the higher must be the selection intensity to justify the use of additional replications. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-10-01 |
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=S1984-70332013000300001 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332013000300001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1984-70332013000300001 |
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.13 n.3 2013 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_ |
1754209186372124672 |