Sample size for half-sib family evaluation in maize
Main Author: | |
---|---|
Publication Date: | 2000 |
Other Authors: | , |
Format: | Article |
Language: | por |
Source: | Pesquisa Agropecuária Brasileira (Online) |
Download full: | https://seer.sct.embrapa.br/index.php/pab/article/view/5911 |
Summary: | This work had the aim to verify the effect of the number of plants per plot in the evaluation of half-sib families. For that, 25 half-sib families of CMS-39 were evaluated with the experimental design being a simple lattice, 5 x 5, with two replications. Each plot was constituted by three lines with 10 m of length. Each plot was subdivided in sub-plots with five plants, being discarded extremities. Associating the contiguous sub-plots it was possible to simulate 270 variance analyses, with the number of plants per plot varying from 5 to 135. Genetic and phenotypic parameters were estimated with their respective errors. Expected selection response yield was also simulated for each sample size. In this simulation, it was verified that the number of plants per plot affected experimental precision. As larger was the number of plants, more accurate were the experiments; plots with the same number of plants, even so distributed in two or three lines, provide greater experimental precision. The selection expected response decreases with the increase in the number of plants per plot. |
id |
EMBRAPA-4_7d75eea72eff87aecdfd59551ca0a831 |
---|---|
oai_identifier_str |
oai:ojs.seer.sct.embrapa.br:article/5911 |
network_acronym_str |
EMBRAPA-4 |
network_name_str |
Pesquisa Agropecuária Brasileira (Online) |
repository_id_str |
|
spelling |
Sample size for half-sib family evaluation in maizeTamanho da amostra para avaliação de famílias de meios-irmãos de milhoplant breeding; plots; genetic gain; genetic parameters; phenotypes; selectionmelhoramento de plantas; parcela; ganho genético; parâmetros genéticos; fenótipos; seleçãoThis work had the aim to verify the effect of the number of plants per plot in the evaluation of half-sib families. For that, 25 half-sib families of CMS-39 were evaluated with the experimental design being a simple lattice, 5 x 5, with two replications. Each plot was constituted by three lines with 10 m of length. Each plot was subdivided in sub-plots with five plants, being discarded extremities. Associating the contiguous sub-plots it was possible to simulate 270 variance analyses, with the number of plants per plot varying from 5 to 135. Genetic and phenotypic parameters were estimated with their respective errors. Expected selection response yield was also simulated for each sample size. In this simulation, it was verified that the number of plants per plot affected experimental precision. As larger was the number of plants, more accurate were the experiments; plots with the same number of plants, even so distributed in two or three lines, provide greater experimental precision. The selection expected response decreases with the increase in the number of plants per plot.Este trabalho teve como objetivo verificar o efeito do número de plantas por parcela na avaliação de famílias de meios-irmãos de milho. Para isso, 25 famílias da população CMS-39 foram avaliadas utilizando um látice 5 x 5 com duas repetições. Cada parcela era constituída por três linhas com 10 m de comprimento. Cada parcela foi subdividida em estratos de 1 m com cinco plantas; asso-ciando os estratos contíguos, foi possível obter número de plantas por parcela, que variou de 5 a 135. Utilizando esses diferentes tamanhos de parcelas, foram realizadas 270 análises de variância quanto ao caráter peso da espiga despalhada. A partir dessas análises, foram estimados os parâmetros genéticos e fenotípicos com os seus respectivos erros e simulando o ganho esperado com a seleção. Constatou-se que quanto maior o número de plantas, mais precisos foram os experimentos; as parcelas contendo o mesmo número de plantas, porém distribuídos em duas ou três linhas, propiciam maior precisão experimental; o ganho esperado com a seleção decresce com o aumento do número de plantas utilizadas, por parcela.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPalomino, Edwin CamachoRamalho, Magno Antônio PattoFerreira, Daniel Furtado2000-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5911Pesquisa Agropecuaria Brasileira; v.35, n.7, jul. 2000; 1433-1439Pesquisa Agropecuária Brasileira; v.35, n.7, jul. 2000; 1433-14391678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5911/3015info:eu-repo/semantics/openAccess2010-08-12T17:59:29Zoai:ojs.seer.sct.embrapa.br:article/5911Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-08-12T17:59:29Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Sample size for half-sib family evaluation in maize Tamanho da amostra para avaliação de famílias de meios-irmãos de milho |
title |
Sample size for half-sib family evaluation in maize |
spellingShingle |
Sample size for half-sib family evaluation in maize Palomino, Edwin Camacho plant breeding; plots; genetic gain; genetic parameters; phenotypes; selection melhoramento de plantas; parcela; ganho genético; parâmetros genéticos; fenótipos; seleção |
title_short |
Sample size for half-sib family evaluation in maize |
title_full |
Sample size for half-sib family evaluation in maize |
title_fullStr |
Sample size for half-sib family evaluation in maize |
title_full_unstemmed |
Sample size for half-sib family evaluation in maize |
title_sort |
Sample size for half-sib family evaluation in maize |
author |
Palomino, Edwin Camacho |
author_facet |
Palomino, Edwin Camacho Ramalho, Magno Antônio Patto Ferreira, Daniel Furtado |
author_role |
author |
author2 |
Ramalho, Magno Antônio Patto Ferreira, Daniel Furtado |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Palomino, Edwin Camacho Ramalho, Magno Antônio Patto Ferreira, Daniel Furtado |
dc.subject.por.fl_str_mv |
plant breeding; plots; genetic gain; genetic parameters; phenotypes; selection melhoramento de plantas; parcela; ganho genético; parâmetros genéticos; fenótipos; seleção |
topic |
plant breeding; plots; genetic gain; genetic parameters; phenotypes; selection melhoramento de plantas; parcela; ganho genético; parâmetros genéticos; fenótipos; seleção |
description |
This work had the aim to verify the effect of the number of plants per plot in the evaluation of half-sib families. For that, 25 half-sib families of CMS-39 were evaluated with the experimental design being a simple lattice, 5 x 5, with two replications. Each plot was constituted by three lines with 10 m of length. Each plot was subdivided in sub-plots with five plants, being discarded extremities. Associating the contiguous sub-plots it was possible to simulate 270 variance analyses, with the number of plants per plot varying from 5 to 135. Genetic and phenotypic parameters were estimated with their respective errors. Expected selection response yield was also simulated for each sample size. In this simulation, it was verified that the number of plants per plot affected experimental precision. As larger was the number of plants, more accurate were the experiments; plots with the same number of plants, even so distributed in two or three lines, provide greater experimental precision. The selection expected response decreases with the increase in the number of plants per plot. |
publishDate |
2000 |
dc.date.none.fl_str_mv |
2000-07-01 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/5911 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/5911 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/5911/3015 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.35, n.7, jul. 2000; 1433-1439 Pesquisa Agropecuária Brasileira; v.35, n.7, jul. 2000; 1433-1439 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
_version_ |
1793416708485021696 |