Genetic gains for heat tolerance in potato in three cycles of recurrent selection

Detalhes bibliográficos
Autor(a) principal: Benites, Flávio Rodrigo Gandolfi
Data de Publicação: 2011
Outros Autores: Pinto, César Augusto Brasil Pereira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/15104
Resumo: Practically all potato cultivars grown in Brazil are native to Europe and not fully adapted to the tropical conditions. The purpose of this study was to estimate the genetic gains of three cycles of recurrent selection for heat tolerance in potato. The base population in this study consisted of five Brazilian and five heat-tolerant clones. In the winter of 2006 and rainy growing season of 2007 103 clones were evaluated (eight clones of the base population, 29 of the first cycle, 32 and 30 of the second and third recurrent selection cycle, respectively, and four control cultivars). The genetic gains for tuber traits in both growing seasons were 37.8 % (yield), 13.0 % (weight), 32.4 % (percent of large tubers), 0.8 % (tuber specific gravity) and 16.6 % (general tuber appearance). The percentage of physiological disorders (second-growth tubers and cracking) was also reduced by selection.
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spelling Genetic gains for heat tolerance in potato in three cycles of recurrent selectionGanhos genéticos com três ciclos de seleção recorrente visando a tolerância ao calor em batataBatata - Melhoramento genéticoBatata - Resistência ao calorPotato - Genetic improvementPotato - Resistance to heatPractically all potato cultivars grown in Brazil are native to Europe and not fully adapted to the tropical conditions. The purpose of this study was to estimate the genetic gains of three cycles of recurrent selection for heat tolerance in potato. The base population in this study consisted of five Brazilian and five heat-tolerant clones. In the winter of 2006 and rainy growing season of 2007 103 clones were evaluated (eight clones of the base population, 29 of the first cycle, 32 and 30 of the second and third recurrent selection cycle, respectively, and four control cultivars). The genetic gains for tuber traits in both growing seasons were 37.8 % (yield), 13.0 % (weight), 32.4 % (percent of large tubers), 0.8 % (tuber specific gravity) and 16.6 % (general tuber appearance). The percentage of physiological disorders (second-growth tubers and cracking) was also reduced by selection.As cultivares de batata plantadas no Brasil são praticamente todas de origem européia e não são completamente adaptadas às condições tropicais do Brasil. O objetivo deste trabalho foi estimar os ganhos genéticos com três ciclos de seleção recorrente visando à tolerância ao calor em batata. A população base deste estudo foi formada por cinco clones brasileiros e cinco clones tolerantes ao calor. Nas safras de inverno de 2006 e das águas de 2007 foram avaliados 103 clones, sendo oito da população base, 29 do primeiro ciclo, 32 do segundo e 30 do terceiro ciclo de seleção recorrente e mais quatro cultivares testemunhas. Os ganhos genéticos para caracteres dos tubérculos na média das duas safras foram de 37,8 % (produtividade), 13,0 % (peso médio), 32,4 % (porcentagem de graúdos), 0,8 % (peso específico) e 16,6 % (nota de aparência). Observaram-se, ainda, redução na porcentagem de desordens fisiológicas (embonecamento e rachaduras)Crop Breeding and Applied Biotechnology2017-08-10T17:16:33Z2017-08-10T17:16:33Z2011-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfBENITES, F. R. G.; PINTO, C. A. B. P. Genetic gains for heat tolerance in potato in three cycles of recurrent selection. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 11, n. 2, p. 133-140, June 2011.http://repositorio.ufla.br/jspui/handle/1/15104Crop Breeding and Applied Biotechnologyreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLABenites, Flávio Rodrigo GandolfiPinto, César Augusto Brasil Pereirainfo:eu-repo/semantics/openAccesseng2017-08-10T17:16:34Zoai:localhost:1/15104Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2017-08-10T17:16:34Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Genetic gains for heat tolerance in potato in three cycles of recurrent selection
Ganhos genéticos com três ciclos de seleção recorrente visando a tolerância ao calor em batata
title Genetic gains for heat tolerance in potato in three cycles of recurrent selection
spellingShingle Genetic gains for heat tolerance in potato in three cycles of recurrent selection
Benites, Flávio Rodrigo Gandolfi
Batata - Melhoramento genético
Batata - Resistência ao calor
Potato - Genetic improvement
Potato - Resistance to heat
title_short Genetic gains for heat tolerance in potato in three cycles of recurrent selection
title_full Genetic gains for heat tolerance in potato in three cycles of recurrent selection
title_fullStr Genetic gains for heat tolerance in potato in three cycles of recurrent selection
title_full_unstemmed Genetic gains for heat tolerance in potato in three cycles of recurrent selection
title_sort Genetic gains for heat tolerance in potato in three cycles of recurrent selection
author Benites, Flávio Rodrigo Gandolfi
author_facet Benites, Flávio Rodrigo Gandolfi
Pinto, César Augusto Brasil Pereira
author_role author
author2 Pinto, César Augusto Brasil Pereira
author2_role author
dc.contributor.author.fl_str_mv Benites, Flávio Rodrigo Gandolfi
Pinto, César Augusto Brasil Pereira
dc.subject.por.fl_str_mv Batata - Melhoramento genético
Batata - Resistência ao calor
Potato - Genetic improvement
Potato - Resistance to heat
topic Batata - Melhoramento genético
Batata - Resistência ao calor
Potato - Genetic improvement
Potato - Resistance to heat
description Practically all potato cultivars grown in Brazil are native to Europe and not fully adapted to the tropical conditions. The purpose of this study was to estimate the genetic gains of three cycles of recurrent selection for heat tolerance in potato. The base population in this study consisted of five Brazilian and five heat-tolerant clones. In the winter of 2006 and rainy growing season of 2007 103 clones were evaluated (eight clones of the base population, 29 of the first cycle, 32 and 30 of the second and third recurrent selection cycle, respectively, and four control cultivars). The genetic gains for tuber traits in both growing seasons were 37.8 % (yield), 13.0 % (weight), 32.4 % (percent of large tubers), 0.8 % (tuber specific gravity) and 16.6 % (general tuber appearance). The percentage of physiological disorders (second-growth tubers and cracking) was also reduced by selection.
publishDate 2011
dc.date.none.fl_str_mv 2011-06
2017-08-10T17:16:33Z
2017-08-10T17:16:33Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv BENITES, F. R. G.; PINTO, C. A. B. P. Genetic gains for heat tolerance in potato in three cycles of recurrent selection. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 11, n. 2, p. 133-140, June 2011.
http://repositorio.ufla.br/jspui/handle/1/15104
identifier_str_mv BENITES, F. R. G.; PINTO, C. A. B. P. Genetic gains for heat tolerance in potato in three cycles of recurrent selection. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 11, n. 2, p. 133-140, June 2011.
url http://repositorio.ufla.br/jspui/handle/1/15104
dc.language.iso.fl_str_mv eng
language eng
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 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
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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