Depressão endogâmica e variabilidade genética de populações para produção de milho verde
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFG |
Texto Completo: | http://repositorio.bc.ufg.br/tede/handle/tede/10660 |
Resumo: | The production of vegetable corn is an activity of great importance for several regions of Brazil. Despite this, breeding programs have devoted little effort to developing and recommending cultivars specifically for this purpose. Then, it is essential that programs for the improvement of public institutions seek to serve this niche market, which has a relevant social role, as it is conducted mainly in small areas. This work aimed to estimate inbreeding depression and the genetic components of three populations for the production of vegetable corn. The populations evaluated have a different genetic basis: a variety of open pollination, called UFG-Samambaia (P1), a population obtained by crossing two older hybrids (P2) and a third population obtained by crossing of the modern hybrids (P3). Progenies of these three populations were obtained by sampling self-fertilized S0 plants. S1 progenies, three S0 populations and two checks were evaluated in a triple lattice 14 x 14 with plots of a four meter line. They were evaluated the agronomic traits: ears weight, plant height, ears height, relative position of the ear, breaking and lodging plants, days to anthesis, days to silking; and quality traits of ears: mass weight, ears weight without straw, length of ears without straw, ears diameter, ear alignment, ear stuffing, grain color. Statistical analyzes were performed using a mixed model approach. Inbreeding depression was estimated for all characters and the components of means (m + a ’and d) and variance. Genetic variability was observed for most traits among P1 progenies. The progenies of the P2 and P3 populations did not show genetic variability for most characters. The three populations suffered an impact when subjected to self-fertilization due to the effects of inbreeding. Inbreeding depression in P1 has higher rates for most characters: plant height, ear height, relative ear position, mass weight, length of ears without straw, alignment of ears and stuffing; In P2, the male flowering characters, weight of ears without straw and diameter of ears show a higher index and in P3, the characters of ear weight, female flowering, breakage and lodging and grain color. In general, the quality characters of the ear, important for the production of green corn, the greater depression due to inbreeding than the agronomic characters. This shows that, inbreeding depression must be considered in the selection process, with the frequency of favorable alleles increasing throughout the improvement process. |
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Melo, Patrícia Guimarães Santoshttp://lattes.cnpq.br/1508679345970114Resende, Marcela Pedroso Mendeshttp://lattes.cnpq.br/2080097211870591Melo, Patrícia Guimarães SantosResende, Marcela Pedroso MendesVidotti, Mirian SuzaneReis, Edésio Fialho doshttp://lattes.cnpq.br/5464372401310903Cascão, Luma Mariano2020-09-11T15:28:33Z2020-09-11T15:28:33Z2020-03-30CASCÃO, L. M. Depressão endogâmica e variabilidade genética de populações para produção de milho verde. 2020.46 f. Dissertação (Mestrado em Genética e Melhoramento de Plantas) - Universidade Federal de Goiás, Goiânia, 2020.http://repositorio.bc.ufg.br/tede/handle/tede/10660ark:/38995/0013000004t4sThe production of vegetable corn is an activity of great importance for several regions of Brazil. Despite this, breeding programs have devoted little effort to developing and recommending cultivars specifically for this purpose. Then, it is essential that programs for the improvement of public institutions seek to serve this niche market, which has a relevant social role, as it is conducted mainly in small areas. This work aimed to estimate inbreeding depression and the genetic components of three populations for the production of vegetable corn. The populations evaluated have a different genetic basis: a variety of open pollination, called UFG-Samambaia (P1), a population obtained by crossing two older hybrids (P2) and a third population obtained by crossing of the modern hybrids (P3). Progenies of these three populations were obtained by sampling self-fertilized S0 plants. S1 progenies, three S0 populations and two checks were evaluated in a triple lattice 14 x 14 with plots of a four meter line. They were evaluated the agronomic traits: ears weight, plant height, ears height, relative position of the ear, breaking and lodging plants, days to anthesis, days to silking; and quality traits of ears: mass weight, ears weight without straw, length of ears without straw, ears diameter, ear alignment, ear stuffing, grain color. Statistical analyzes were performed using a mixed model approach. Inbreeding depression was estimated for all characters and the components of means (m + a ’and d) and variance. Genetic variability was observed for most traits among P1 progenies. The progenies of the P2 and P3 populations did not show genetic variability for most characters. The three populations suffered an impact when subjected to self-fertilization due to the effects of inbreeding. Inbreeding depression in P1 has higher rates for most characters: plant height, ear height, relative ear position, mass weight, length of ears without straw, alignment of ears and stuffing; In P2, the male flowering characters, weight of ears without straw and diameter of ears show a higher index and in P3, the characters of ear weight, female flowering, breakage and lodging and grain color. In general, the quality characters of the ear, important for the production of green corn, the greater depression due to inbreeding than the agronomic characters. This shows that, inbreeding depression must be considered in the selection process, with the frequency of favorable alleles increasing throughout the improvement process.A produção de milho verde é uma atividade de grande importância para várias regiões do Brasil. Apesar disso, os programas de melhoramento têm dedicado poucos esforços para desenvolver e recomendar cultivares especificamente para esta finalidade. Assim, é fundamental que programas de melhoramento de instituições públicas busquem atender este nicho de mercado, que tem um papel social relevante, por ser conduzido principalmente em pequenas áreas. Este trabalho teve como objetivo estimar a depressão endogamica e os componentes genéticos de três populações para a produção de milho verde. As populações avaliadas apresentam bases genéticas distintas: uma variedade de polinização aberta, denominada UFG--Samambaia (P1), uma população formada pelo cruzamento de dois híbridos mais antigos (P2) e a terceira formada pelo cruzamento de híbridos modernos (P3). Foram obtidas progênies destas três populações por meio de uma amostragem de plantas S0 autofecundadas. As progênies S1, as três populações S0 e duas testemunhas foram avaliadas em um látice triplo 14 x 14 com parcelas de uma linha de quatro metros. Foram avaliados os caracteres agronômicos: peso de espigas, altura de plantas, altura de espigas, posição relativa da espiga, quebramento e acamamento, florescimento feminino, florescimento masculino; e os caracteres de qualidade de espigas: peso de massa, peso de espigas sem palha, comprimento de espigas sem palha, diâmetro de espigas, alinhamento de espigas, empalhamento de espigas, cor de grãos. As análises estatísticas foram realizadas via abordagem de modelos mistos. Foi estimada depressão por endogamia para todos os caracteres e os componentes de médias (m+a’ e d) e variância. Foi observada variabilidade genética para a maioria dos caracteres entre as progênies da P1. As progênies das populações P2 e P3 não apresentaram variabilidade genética para maioria dos caracteres. As três populações sofreram impactos quando submetidas a autofecundação devido aos efeitos da endogamia. A depressão por endogamia na P1 tem maiores índices para maioria dos caracteres: altura de plantas, altura de espigas, posição relativa da espiga, peso de massa, comprimento de espigas sem palha, alinhamento de espigas e empalhamento; Na P2, os caracteres florescimento masculino, peso de espigas sem palha e diâmetro de espigas apresentaram maiores índice e na P3, os caracteres peso de espiga, florescimento feminino, quebramento e acamamento e cor de grão. De maneira geral, os caracteres de qualidade de espiga, importantes para produção de milho verde apresentaram maior depressão por endogamia que os caracteres agronômicos. Isso mostra que, deve-se considerá-la a depressão por endogamia no processo de seleção, sendo necessário aumentar a frequência de alelos favoráveis ao longo do processo de melhoramento. 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No. of bitstreams: 2 Dissertação - Luma Mariano Cascão - 2020.pdf: 1008775 bytes, checksum: 3f4958642e9ba53429101cb7a6c92d24 (MD5) license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Previous issue date: 2020-03-30Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de GoiásPrograma de Pós-graduação em Genética e Melhoramento de Plantas (EA)UFGBrasilEscola de Agronomia - EA (RG)Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessMilho verdeDepressão por endogamiaVariabilidade genéticaPopulaçõesVegetable cornInbreeding depressionGenetic variabilityPopulationsCIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLODepressão endogâmica e variabilidade genética de populações para produção de milho verdeInbreeding depression and population genetic variability for vegetable corn productioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis565005005005002201reponame:Repositório Institucional da UFGinstname:Universidade Federal de Goiás (UFG)instacron:UFGORIGINALDissertação - Luma Mariano Cascão - 2020.pdfDissertação - Luma Mariano Cascão - 2020.pdfapplication/pdf1008775http://repositorio.bc.ufg.br/tede/bitstreams/681b4125-3d55-4335-8a42-ba7d3f054dad/download3f4958642e9ba53429101cb7a6c92d24MD53LICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.bc.ufg.br/tede/bitstreams/857830fd-a1a9-4804-a5c7-15ca93329718/download8a4605be74aa9ea9d79846c1fba20a33MD54CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8811http://repositorio.bc.ufg.br/tede/bitstreams/95daf59a-1f68-4376-8459-f6a987ae9f1a/downloade39d27027a6cc9cb039ad269a5db8e34MD55tede/106602020-09-11 12:28:35.286http://creativecommons.org/licenses/by-nc-nd/3.0/br/Attribution-NonCommercial-NoDerivs 3.0 Brazilopen.accessoai:repositorio.bc.ufg.br:tede/10660http://repositorio.bc.ufg.br/tedeRepositório InstitucionalPUBhttp://repositorio.bc.ufg.br/oai/requesttasesdissertacoes.bc@ufg.bropendoar:2020-09-11T15:28:35Repositório Institucional da UFG - Universidade Federal de Goiás (UFG)falseTk9URTogUExBQ0UgWU9VUiBPV04gTElDRU5TRSBIRVJFClRoaXMgc2FtcGxlIGxpY2Vuc2UgaXMgcHJvdmlkZWQgZm9yIGluZm9ybWF0aW9uYWwgcHVycG9zZXMgb25seS4KCk5PTi1FWENMVVNJVkUgRElTVFJJQlVUSU9OIExJQ0VOU0UKCkJ5IHNpZ25pbmcgYW5kIHN1Ym1pdHRpbmcgdGhpcyBsaWNlbnNlLCB5b3UgKHRoZSBhdXRob3Iocykgb3IgY29weXJpZ2h0Cm93bmVyKSBncmFudHMgdG8gRFNwYWNlIFVuaXZlcnNpdHkgKERTVSkgdGhlIG5vbi1leGNsdXNpdmUgcmlnaHQgdG8gcmVwcm9kdWNlLAp0cmFuc2xhdGUgKGFzIGRlZmluZWQgYmVsb3cpLCBhbmQvb3IgZGlzdHJpYnV0ZSB5b3VyIHN1Ym1pc3Npb24gKGluY2x1ZGluZwp0aGUgYWJzdHJhY3QpIHdvcmxkd2lkZSBpbiBwcmludCBhbmQgZWxlY3Ryb25pYyBmb3JtYXQgYW5kIGluIGFueSBtZWRpdW0sCmluY2x1ZGluZyBidXQgbm90IGxpbWl0ZWQgdG8gYXVkaW8gb3IgdmlkZW8uCgpZb3UgYWdyZWUgdGhhdCBEU1UgbWF5LCB3aXRob3V0IGNoYW5naW5nIHRoZSBjb250ZW50LCB0cmFuc2xhdGUgdGhlCnN1Ym1pc3Npb24gdG8gYW55IG1lZGl1bSBvciBmb3JtYXQgZm9yIHRoZSBwdXJwb3NlIG9mIHByZXNlcnZhdGlvbi4KCllvdSBhbHNvIGFncmVlIHRoYXQgRFNVIG1heSBrZWVwIG1vcmUgdGhhbiBvbmUgY29weSBvZiB0aGlzIHN1Ym1pc3Npb24gZm9yCnB1cnBvc2VzIG9mIHNlY3VyaXR5LCBiYWNrLXVwIGFuZCBwcmVzZXJ2YXRpb24uCgpZb3UgcmVwcmVzZW50IHRoYXQgdGhlIHN1Ym1pc3Npb24gaXMgeW91ciBvcmlnaW5hbCB3b3JrLCBhbmQgdGhhdCB5b3UgaGF2ZQp0aGUgcmlnaHQgdG8gZ3JhbnQgdGhlIHJpZ2h0cyBjb250YWluZWQgaW4gdGhpcyBsaWNlbnNlLiBZb3UgYWxzbyByZXByZXNlbnQKdGhhdCB5b3VyIHN1Ym1pc3Npb24gZG9lcyBub3QsIHRvIHRoZSBiZXN0IG9mIHlvdXIga25vd2xlZGdlLCBpbmZyaW5nZSB1cG9uCmFueW9uZSdzIGNvcHlyaWdodC4KCklmIHRoZSBzdWJtaXNzaW9uIGNvbnRhaW5zIG1hdGVyaWFsIGZvciB3aGljaCB5b3UgZG8gbm90IGhvbGQgY29weXJpZ2h0LAp5b3UgcmVwcmVzZW50IHRoYXQgeW91IGhhdmUgb2J0YWluZWQgdGhlIHVucmVzdHJpY3RlZCBwZXJtaXNzaW9uIG9mIHRoZQpjb3B5cmlnaHQgb3duZXIgdG8gZ3JhbnQgRFNVIHRoZSByaWdodHMgcmVxdWlyZWQgYnkgdGhpcyBsaWNlbnNlLCBhbmQgdGhhdApzdWNoIHRoaXJkLXBhcnR5IG93bmVkIG1hdGVyaWFsIGlzIGNsZWFybHkgaWRlbnRpZmllZCBhbmQgYWNrbm93bGVkZ2VkCndpdGhpbiB0aGUgdGV4dCBvciBjb250ZW50IG9mIHRoZSBzdWJtaXNzaW9uLgoKSUYgVEhFIFNVQk1JU1NJT04gSVMgQkFTRUQgVVBPTiBXT1JLIFRIQVQgSEFTIEJFRU4gU1BPTlNPUkVEIE9SIFNVUFBPUlRFRApCWSBBTiBBR0VOQ1kgT1IgT1JHQU5JWkFUSU9OIE9USEVSIFRIQU4gRFNVLCBZT1UgUkVQUkVTRU5UIFRIQVQgWU9VIEhBVkUKRlVMRklMTEVEIEFOWSBSSUdIVCBPRiBSRVZJRVcgT1IgT1RIRVIgT0JMSUdBVElPTlMgUkVRVUlSRUQgQlkgU1VDSApDT05UUkFDVCBPUiBBR1JFRU1FTlQuCgpEU1Ugd2lsbCBjbGVhcmx5IGlkZW50aWZ5IHlvdXIgbmFtZShzKSBhcyB0aGUgYXV0aG9yKHMpIG9yIG93bmVyKHMpIG9mIHRoZQpzdWJtaXNzaW9uLCBhbmQgd2lsbCBub3QgbWFrZSBhbnkgYWx0ZXJhdGlvbiwgb3RoZXIgdGhhbiBhcyBhbGxvd2VkIGJ5IHRoaXMKbGljZW5zZSwgdG8geW91ciBzdWJtaXNzaW9uLgo= |
dc.title.pt_BR.fl_str_mv |
Depressão endogâmica e variabilidade genética de populações para produção de milho verde |
dc.title.alternative.eng.fl_str_mv |
Inbreeding depression and population genetic variability for vegetable corn production |
title |
Depressão endogâmica e variabilidade genética de populações para produção de milho verde |
spellingShingle |
Depressão endogâmica e variabilidade genética de populações para produção de milho verde Cascão, Luma Mariano Milho verde Depressão por endogamia Variabilidade genética Populações Vegetable corn Inbreeding depression Genetic variability Populations CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
title_short |
Depressão endogâmica e variabilidade genética de populações para produção de milho verde |
title_full |
Depressão endogâmica e variabilidade genética de populações para produção de milho verde |
title_fullStr |
Depressão endogâmica e variabilidade genética de populações para produção de milho verde |
title_full_unstemmed |
Depressão endogâmica e variabilidade genética de populações para produção de milho verde |
title_sort |
Depressão endogâmica e variabilidade genética de populações para produção de milho verde |
author |
Cascão, Luma Mariano |
author_facet |
Cascão, Luma Mariano |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Melo, Patrícia Guimarães Santos |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/1508679345970114 |
dc.contributor.advisor-co1.fl_str_mv |
Resende, Marcela Pedroso Mendes |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/2080097211870591 |
dc.contributor.referee1.fl_str_mv |
Melo, Patrícia Guimarães Santos |
dc.contributor.referee2.fl_str_mv |
Resende, Marcela Pedroso Mendes |
dc.contributor.referee3.fl_str_mv |
Vidotti, Mirian Suzane |
dc.contributor.referee4.fl_str_mv |
Reis, Edésio Fialho dos |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/5464372401310903 |
dc.contributor.author.fl_str_mv |
Cascão, Luma Mariano |
contributor_str_mv |
Melo, Patrícia Guimarães Santos Resende, Marcela Pedroso Mendes Melo, Patrícia Guimarães Santos Resende, Marcela Pedroso Mendes Vidotti, Mirian Suzane Reis, Edésio Fialho dos |
dc.subject.por.fl_str_mv |
Milho verde Depressão por endogamia Variabilidade genética Populações |
topic |
Milho verde Depressão por endogamia Variabilidade genética Populações Vegetable corn Inbreeding depression Genetic variability Populations CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
dc.subject.eng.fl_str_mv |
Vegetable corn Inbreeding depression Genetic variability Populations |
dc.subject.cnpq.fl_str_mv |
CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO |
description |
The production of vegetable corn is an activity of great importance for several regions of Brazil. Despite this, breeding programs have devoted little effort to developing and recommending cultivars specifically for this purpose. Then, it is essential that programs for the improvement of public institutions seek to serve this niche market, which has a relevant social role, as it is conducted mainly in small areas. This work aimed to estimate inbreeding depression and the genetic components of three populations for the production of vegetable corn. The populations evaluated have a different genetic basis: a variety of open pollination, called UFG-Samambaia (P1), a population obtained by crossing two older hybrids (P2) and a third population obtained by crossing of the modern hybrids (P3). Progenies of these three populations were obtained by sampling self-fertilized S0 plants. S1 progenies, three S0 populations and two checks were evaluated in a triple lattice 14 x 14 with plots of a four meter line. They were evaluated the agronomic traits: ears weight, plant height, ears height, relative position of the ear, breaking and lodging plants, days to anthesis, days to silking; and quality traits of ears: mass weight, ears weight without straw, length of ears without straw, ears diameter, ear alignment, ear stuffing, grain color. Statistical analyzes were performed using a mixed model approach. Inbreeding depression was estimated for all characters and the components of means (m + a ’and d) and variance. Genetic variability was observed for most traits among P1 progenies. The progenies of the P2 and P3 populations did not show genetic variability for most characters. The three populations suffered an impact when subjected to self-fertilization due to the effects of inbreeding. Inbreeding depression in P1 has higher rates for most characters: plant height, ear height, relative ear position, mass weight, length of ears without straw, alignment of ears and stuffing; In P2, the male flowering characters, weight of ears without straw and diameter of ears show a higher index and in P3, the characters of ear weight, female flowering, breakage and lodging and grain color. In general, the quality characters of the ear, important for the production of green corn, the greater depression due to inbreeding than the agronomic characters. This shows that, inbreeding depression must be considered in the selection process, with the frequency of favorable alleles increasing throughout the improvement process. |
publishDate |
2020 |
dc.date.accessioned.fl_str_mv |
2020-09-11T15:28:33Z |
dc.date.available.fl_str_mv |
2020-09-11T15:28:33Z |
dc.date.issued.fl_str_mv |
2020-03-30 |
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.citation.fl_str_mv |
CASCÃO, L. M. Depressão endogâmica e variabilidade genética de populações para produção de milho verde. 2020.46 f. Dissertação (Mestrado em Genética e Melhoramento de Plantas) - Universidade Federal de Goiás, Goiânia, 2020. |
dc.identifier.uri.fl_str_mv |
http://repositorio.bc.ufg.br/tede/handle/tede/10660 |
dc.identifier.dark.fl_str_mv |
ark:/38995/0013000004t4s |
identifier_str_mv |
CASCÃO, L. M. Depressão endogâmica e variabilidade genética de populações para produção de milho verde. 2020.46 f. Dissertação (Mestrado em Genética e Melhoramento de Plantas) - Universidade Federal de Goiás, Goiânia, 2020. ark:/38995/0013000004t4s |
url |
http://repositorio.bc.ufg.br/tede/handle/tede/10660 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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56 |
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500 500 500 500 |
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2 |
dc.relation.cnpq.fl_str_mv |
20 |
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1 |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.publisher.program.fl_str_mv |
Programa de Pós-graduação em Genética e Melhoramento de Plantas (EA) |
dc.publisher.initials.fl_str_mv |
UFG |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Escola de Agronomia - EA (RG) |
publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFG instname:Universidade Federal de Goiás (UFG) instacron:UFG |
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