Seleção de linhas puras na cultivar de soja BRS favorita RR
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/12994 |
Resumo: | In spite ofcultivars of autogamous plants are homogeneous lines, the use of grain as “seeds” by the farmers and the successive cultivation may generate natural variability due to mechanical mixing, natural hybridization and mutation. Although this variability is not being explored in soybean crops, it is possible to apply the selection of pure line methods in order to obtain new cultivars. The estimation of genetic and phenotypic parameters allows making inferences about the existence of genetic variability, as well as measuring the gain with the selection of the superior genotypes. In this context, the present work had as objective to estimate the genetic and phenotypic parameters, as well as to identify and select superior genotypes that associate good performance in characters of interest from a heterogeneous population of the soybean cultivar BRS Favorita RR. The 225 plants were collected from a rural propriety in Itutinga – MG, where soybean cultivation has been reported for several years, saving seeds. The experiments of evaluation were carried out during the crop years of 2014/2015 and 2015/2016, in five cities in Minas Gerais State, in simple and triple lattice with 255 and 80 progenies, respectively, plus BRS Favorita RR, as a check. The agronomic characters: plant height (cm), first pod insertion (cm), maturation (cm), lodging (1-5 scale), grain yielding (sc/ha) were evaluated. The analysis of the obtained data was performed in the statistical software R using mixed models approach. Afterwards, the genetic parameters, the expected gain with selection and the gain realized in the selection intensities of 1%, 5%, 10%, 15%, 20%, 25%, and 30% were estimated,besides the frequency distribution of the adjusted means and errors associated to the genotypic values. The estimates of variance component among progenies were significant showing that there is difference between the treatments. From the frequency distribution, it was possible to verify the possibility of selecting progenies that overcome the check for all characters. The progeny 22 was highlighted ad the most productive. From these results, it was possible to verify that the existence of variability in the heterogeneous BRS Favorita RR allows the selection of lines that associate good grain yielding, plant height, first pod insertion and tolerance to lodging superiors to itself. |
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Seleção de linhas puras na cultivar de soja BRS favorita RRSelection of pure lines in soybean cultivar BRS favorita RRSoja - CultivoSoja - Método da seleçãoSoja - Genótipos superioresSoja - Parâmetros genéticos e fenotípicosSoybean - GrowingSoybean - Selection methodSoybean - Upper genotypesSoybean - Genetic and phenotypic parametersFitotecniaIn spite ofcultivars of autogamous plants are homogeneous lines, the use of grain as “seeds” by the farmers and the successive cultivation may generate natural variability due to mechanical mixing, natural hybridization and mutation. Although this variability is not being explored in soybean crops, it is possible to apply the selection of pure line methods in order to obtain new cultivars. The estimation of genetic and phenotypic parameters allows making inferences about the existence of genetic variability, as well as measuring the gain with the selection of the superior genotypes. In this context, the present work had as objective to estimate the genetic and phenotypic parameters, as well as to identify and select superior genotypes that associate good performance in characters of interest from a heterogeneous population of the soybean cultivar BRS Favorita RR. The 225 plants were collected from a rural propriety in Itutinga – MG, where soybean cultivation has been reported for several years, saving seeds. The experiments of evaluation were carried out during the crop years of 2014/2015 and 2015/2016, in five cities in Minas Gerais State, in simple and triple lattice with 255 and 80 progenies, respectively, plus BRS Favorita RR, as a check. The agronomic characters: plant height (cm), first pod insertion (cm), maturation (cm), lodging (1-5 scale), grain yielding (sc/ha) were evaluated. The analysis of the obtained data was performed in the statistical software R using mixed models approach. Afterwards, the genetic parameters, the expected gain with selection and the gain realized in the selection intensities of 1%, 5%, 10%, 15%, 20%, 25%, and 30% were estimated,besides the frequency distribution of the adjusted means and errors associated to the genotypic values. The estimates of variance component among progenies were significant showing that there is difference between the treatments. From the frequency distribution, it was possible to verify the possibility of selecting progenies that overcome the check for all characters. The progeny 22 was highlighted ad the most productive. From these results, it was possible to verify that the existence of variability in the heterogeneous BRS Favorita RR allows the selection of lines that associate good grain yielding, plant height, first pod insertion and tolerance to lodging superiors to itself.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Embora as cultivares de plantas autógamas sejam linhagens homogêneas, o uso dos grãos como “semente” pelo produtor e o cultivo sucessivo podem gerar variabilidade natural devido à mistura mecânica, hibridação natural e mutação. Muito embora esta variabilidade não esteja sendo explorada na cultura da soja, é possível de se empregar o método de seleção de linhas puras visando obtenção de novas cultivares. A estimativa de parâmetros genéticos e fenotípicos permite realizar inferência acerca da existência da variabilidade genética, como também mensurar o ganho com a seleção dos genótipos superiores. Neste contexto, o presente trabalho teve como objetivo estimar parâmetros genéticos e fenotípicos bem como a identificação e seleção de genótipos superiores que associem bom desempenho em caracteres de interesse a partir de uma população heterogênea da cultivar BRS Favorita RR. As 255 plantas foram coletadas em uma propriedade rural, em Itutinga – MG, na qual tem-se o relato de cultivo de soja há vários anos, salvando-se as sementes. Os experimentos de avaliação foram conduzidos nos anos agrícolas 2014/2015 e 2015/2016, em cinco municípios de Minas Gerais, em látice simples e triplo com 255 e 80 progênies, respectivamente, mais a testemunha BRS Favorita RR. Foram avaliados os caracteres agronômicos altura de planta (cm), altura de inserção da primeira vagem (cm), maturação absoluta (dias), acamamento (escala 1-5) e produtividade de grãos (sacas/ha). As análises dos dados obtidos foram realizadas no software estatístico R usando a abordagem de modelos mistos. Posteriormente foi realizada a estimativa de parâmetros genéticos, ganho esperado com a seleção e ganho realizado nas intensidades de seleção de 1%, 5%, 10%, 15%, 20%, 25% e 30%, além da distribuição de frequência das médias ajustadas e erros associados aos valores genotípicos. As estimativas do componente de variância entre progênies foram significativas mostrando que existe diferença entre os tratamentos. A partir da distribuição de frequência foi possível verificar a possibilidade de selecionar progênies que superam a testemunha para todos os caracteres. A progênie 22 foi destacada como a mais produtiva. A partir destes resultados foi possível verificar que a existência de variabilidade na cultivar heterogênea BRS Favorita RR possibilita a seleção de linhagens que associem boa produtividade de grãos, altura de planta, inserção da primeira vagem e tolerância ao acamamento superiores a mesma.Universidade Federal de LavrasPrograma de Pós-Graduação em Agronomia/FitotecniaUFLAbrasilDepartamento de AgriculturaBruzi, Adriano TeodoroBruzi, Adriano TeodoroFronza, VanoliPereira, Helton SantosAmaral, Lígia de Oliveira2017-05-18T17:10:29Z2017-05-18T17:10:29Z2017-05-172017-02-24info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfAMARAL, L. de O. Seleção de linhas puras na cultivar de soja BRS favorita RR. 2017. 46 p. Dissertação (Mestrado em Agronomia/Fitotecnia)-Universidade Federal de Lavras, Lavras, 2017.http://repositorio.ufla.br/jspui/handle/1/12994porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2017-05-18T17:10:53Zoai:localhost:1/12994Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2017-05-18T17:10:53Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Seleção de linhas puras na cultivar de soja BRS favorita RR Selection of pure lines in soybean cultivar BRS favorita RR |
title |
Seleção de linhas puras na cultivar de soja BRS favorita RR |
spellingShingle |
Seleção de linhas puras na cultivar de soja BRS favorita RR Amaral, Lígia de Oliveira Soja - Cultivo Soja - Método da seleção Soja - Genótipos superiores Soja - Parâmetros genéticos e fenotípicos Soybean - Growing Soybean - Selection method Soybean - Upper genotypes Soybean - Genetic and phenotypic parameters Fitotecnia |
title_short |
Seleção de linhas puras na cultivar de soja BRS favorita RR |
title_full |
Seleção de linhas puras na cultivar de soja BRS favorita RR |
title_fullStr |
Seleção de linhas puras na cultivar de soja BRS favorita RR |
title_full_unstemmed |
Seleção de linhas puras na cultivar de soja BRS favorita RR |
title_sort |
Seleção de linhas puras na cultivar de soja BRS favorita RR |
author |
Amaral, Lígia de Oliveira |
author_facet |
Amaral, Lígia de Oliveira |
author_role |
author |
dc.contributor.none.fl_str_mv |
Bruzi, Adriano Teodoro Bruzi, Adriano Teodoro Fronza, Vanoli Pereira, Helton Santos |
dc.contributor.author.fl_str_mv |
Amaral, Lígia de Oliveira |
dc.subject.por.fl_str_mv |
Soja - Cultivo Soja - Método da seleção Soja - Genótipos superiores Soja - Parâmetros genéticos e fenotípicos Soybean - Growing Soybean - Selection method Soybean - Upper genotypes Soybean - Genetic and phenotypic parameters Fitotecnia |
topic |
Soja - Cultivo Soja - Método da seleção Soja - Genótipos superiores Soja - Parâmetros genéticos e fenotípicos Soybean - Growing Soybean - Selection method Soybean - Upper genotypes Soybean - Genetic and phenotypic parameters Fitotecnia |
description |
In spite ofcultivars of autogamous plants are homogeneous lines, the use of grain as “seeds” by the farmers and the successive cultivation may generate natural variability due to mechanical mixing, natural hybridization and mutation. Although this variability is not being explored in soybean crops, it is possible to apply the selection of pure line methods in order to obtain new cultivars. The estimation of genetic and phenotypic parameters allows making inferences about the existence of genetic variability, as well as measuring the gain with the selection of the superior genotypes. In this context, the present work had as objective to estimate the genetic and phenotypic parameters, as well as to identify and select superior genotypes that associate good performance in characters of interest from a heterogeneous population of the soybean cultivar BRS Favorita RR. The 225 plants were collected from a rural propriety in Itutinga – MG, where soybean cultivation has been reported for several years, saving seeds. The experiments of evaluation were carried out during the crop years of 2014/2015 and 2015/2016, in five cities in Minas Gerais State, in simple and triple lattice with 255 and 80 progenies, respectively, plus BRS Favorita RR, as a check. The agronomic characters: plant height (cm), first pod insertion (cm), maturation (cm), lodging (1-5 scale), grain yielding (sc/ha) were evaluated. The analysis of the obtained data was performed in the statistical software R using mixed models approach. Afterwards, the genetic parameters, the expected gain with selection and the gain realized in the selection intensities of 1%, 5%, 10%, 15%, 20%, 25%, and 30% were estimated,besides the frequency distribution of the adjusted means and errors associated to the genotypic values. The estimates of variance component among progenies were significant showing that there is difference between the treatments. From the frequency distribution, it was possible to verify the possibility of selecting progenies that overcome the check for all characters. The progeny 22 was highlighted ad the most productive. From these results, it was possible to verify that the existence of variability in the heterogeneous BRS Favorita RR allows the selection of lines that associate good grain yielding, plant height, first pod insertion and tolerance to lodging superiors to itself. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-05-18T17:10:29Z 2017-05-18T17:10:29Z 2017-05-17 2017-02-24 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
AMARAL, L. de O. Seleção de linhas puras na cultivar de soja BRS favorita RR. 2017. 46 p. Dissertação (Mestrado em Agronomia/Fitotecnia)-Universidade Federal de Lavras, Lavras, 2017. http://repositorio.ufla.br/jspui/handle/1/12994 |
identifier_str_mv |
AMARAL, L. de O. Seleção de linhas puras na cultivar de soja BRS favorita RR. 2017. 46 p. Dissertação (Mestrado em Agronomia/Fitotecnia)-Universidade Federal de Lavras, Lavras, 2017. |
url |
http://repositorio.ufla.br/jspui/handle/1/12994 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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 |
Universidade Federal de Lavras Programa de Pós-Graduação em Agronomia/Fitotecnia UFLA brasil Departamento de Agricultura |
publisher.none.fl_str_mv |
Universidade Federal de Lavras Programa de Pós-Graduação em Agronomia/Fitotecnia UFLA brasil Departamento de Agricultura |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1784550214136233984 |