Speed of growth as a criterium of drought resistance in cotton

Detalhes bibliográficos
Autor(a) principal: Souza, José Gomes de
Data de Publicação: 2014
Outros Autores: Silva, Jorge Bravo Vieira da, Neto, Miguel Barreiro, Giles, José Alejandro
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/15173
Resumo: Selection for speed of root growth was done on seedlings for three varieties of cotton (Gossypium hirsutum L.r. latifolium Hutch) both in greenhouse and in laboratory, in order to obtain strains with better drought resistance. Of the three varieties used: Acala del Cerro, Allen 333/57 and SU-0450/8909, the latter presented always a better heritability and genetical gain. After four cycles of recurrent selection the heritability for root growth in this variety was 37% with a genetical gain of 65%. These results were obtained with adult plants and therefore it can be concluded that early selection for speed of root growth in seedlings results in longer roots in grown-up plants.
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spelling Speed of growth as a criterium of drought resistance in cottonVelocidade de crescimento da raiz como parâmetro de resistência à seca no algodoeiroroot system, heritability, genetical gain, Gossypium hirsutumsistema radicular; herdabilidade; ganho genético; Gossypium hirsutumSelection for speed of root growth was done on seedlings for three varieties of cotton (Gossypium hirsutum L.r. latifolium Hutch) both in greenhouse and in laboratory, in order to obtain strains with better drought resistance. Of the three varieties used: Acala del Cerro, Allen 333/57 and SU-0450/8909, the latter presented always a better heritability and genetical gain. After four cycles of recurrent selection the heritability for root growth in this variety was 37% with a genetical gain of 65%. These results were obtained with adult plants and therefore it can be concluded that early selection for speed of root growth in seedlings results in longer roots in grown-up plants.Foi realizado um estudo em condições de casa de vegetação e laboratório, objetivando verificar o efeito da seleção para maior velocidade de crescimento da raiz em algodoeiro (Gossypium hirsutum L.r. latifolium Hutch) e sua aplicação como parâmetro usado pelo melhoramento genético, como critério de seleção de plantas resistentes à seca. Foram usadas as cultivares Acala del Cerro, Allen 333/57 e SU-0450/8909. Esta última variedade apresentou, consistentemente, uma herdabilidade elevada para o caráter selecionado e um grande ganho genético. Na fase adulta e com quatro ciclos de seleção, a cultivar SU-0450/8909 mostra uma herdabilidade de 37% e um ganho genético de 65%. Ficou assim evidenciado que os indivíduos selecionados, mesmo na fase de plântulas para maior velocidade de crescimento do sistema radicular, conservaram uma maior raiz na fase de planta adulta.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSouza, José Gomes deSilva, Jorge Bravo Vieira daNeto, Miguel BarreiroGiles, José Alejandro2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15173Pesquisa Agropecuaria Brasileira; v.18, n.2, fev. 1983; 169-172Pesquisa Agropecuária Brasileira; v.18, n.2, fev. 1983; 169-1721678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15173/8981info:eu-repo/semantics/openAccess2014-04-16T18:50:35Zoai:ojs.seer.sct.embrapa.br:article/15173Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T18:50:35Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Speed of growth as a criterium of drought resistance in cotton
Velocidade de crescimento da raiz como parâmetro de resistência à seca no algodoeiro
title Speed of growth as a criterium of drought resistance in cotton
spellingShingle Speed of growth as a criterium of drought resistance in cotton
Souza, José Gomes de
root system, heritability, genetical gain, Gossypium hirsutum
sistema radicular; herdabilidade; ganho genético; Gossypium hirsutum
title_short Speed of growth as a criterium of drought resistance in cotton
title_full Speed of growth as a criterium of drought resistance in cotton
title_fullStr Speed of growth as a criterium of drought resistance in cotton
title_full_unstemmed Speed of growth as a criterium of drought resistance in cotton
title_sort Speed of growth as a criterium of drought resistance in cotton
author Souza, José Gomes de
author_facet Souza, José Gomes de
Silva, Jorge Bravo Vieira da
Neto, Miguel Barreiro
Giles, José Alejandro
author_role author
author2 Silva, Jorge Bravo Vieira da
Neto, Miguel Barreiro
Giles, José Alejandro
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Souza, José Gomes de
Silva, Jorge Bravo Vieira da
Neto, Miguel Barreiro
Giles, José Alejandro
dc.subject.por.fl_str_mv root system, heritability, genetical gain, Gossypium hirsutum
sistema radicular; herdabilidade; ganho genético; Gossypium hirsutum
topic root system, heritability, genetical gain, Gossypium hirsutum
sistema radicular; herdabilidade; ganho genético; Gossypium hirsutum
description Selection for speed of root growth was done on seedlings for three varieties of cotton (Gossypium hirsutum L.r. latifolium Hutch) both in greenhouse and in laboratory, in order to obtain strains with better drought resistance. Of the three varieties used: Acala del Cerro, Allen 333/57 and SU-0450/8909, the latter presented always a better heritability and genetical gain. After four cycles of recurrent selection the heritability for root growth in this variety was 37% with a genetical gain of 65%. These results were obtained with adult plants and therefore it can be concluded that early selection for speed of root growth in seedlings results in longer roots in grown-up plants.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-16
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/15173
url https://seer.sct.embrapa.br/index.php/pab/article/view/15173
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/15173/8981
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.18, n.2, fev. 1983; 169-172
Pesquisa Agropecuária Brasileira; v.18, n.2, fev. 1983; 169-172
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
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