Tratamento pré-germinativo de sementes de mandioca e determinação da divergência genética de genótipos provenientes dos clones Aciolina e Gabriela

Detalhes bibliográficos
Autor(a) principal: Ximenes, Carla Klis dos Santos
Data de Publicação: 2015
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Institucional da UFRR
Texto Completo: http://repositorio.ufrr.br:8080/jspui/handle/prefix/228
Resumo: The objective of this paper is to analyze the technical pre- germination treatment of cassava manioc seeds from the clone Gabriela. The analysis was conducted at CCA – UFRR, Boa Vista RR during the period October 2013 to December 2013. Three experiments with a completely randomized layout were carried out, with six treatments (experiments l and ll), seven treatments (experiment lll) and four repetitions for all the other experiments. Experiment l: T1 - Intact seeds; T2- Seeds sanded at the caruncle, T3- Intact seeds immersed in a solution with 2, 5 % of Sodium hypochlorite for 5 minutes. T4 -Seeds sanded at the caruncle and immersed in a solution with 2,5 % of Sodium hypochlorite during five minutes. T5 - Intact seeds immersed in hot water at 80° C until cooled down to room temperature. T6 – Intact seeds immersed in 40% of hydrogen peroxide for 3 seconds. Experiment ll: T1-Whole seeds. T2 - Seeds with the caruncle removed; T3- sanded seeds at the caruncle; T4- Seeds sanded at the opposite side of the caruncle; T5 – Sanded seeds on the opposite side of the caruncle with the caruncle removed and T6 - Seeds sanded at the caruncle and at the side opposite of the caruncle. Experiment lll: T1- Intact seeds; T2 – Seeds with caruncle, scarified at the sides; T3- seeds with the caruncle removed with a pair of pliers. T4- The immersion of Intact seeds in sulfuric acid for ten minutes. T5- Immersion of intact seeds, with the caruncle, in sulfuric acid for 20 minutes. T6 – Immersion of intact seeds in sulfuric acid for 30minutes. T7 – Scarification of the caruncle. The variables analyzed were: The percentages of emergence of normal and abnormal plants from hard and dried up seeds and the indices of the velocity of emergence. The results were submitted to the analysis of variance ((p≤0,05) and the Turkey test at 5% of probability and the measures of the variables were transformed to root ( x+ 0,5). The manioc cassava seeds presented a physical dormance which is overcome with the scarification of the tegument. The manioc seeds after being collected can be sowed as long as they have being through the pre-germination treatment of scarification of the tegument. The scarification treatment of seeds at the sides or at the caruncle, showed more efficiency to increase the emergence over 80%. Key words: Scarification. Bud Breaking. Germination.
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spelling Tratamento pré-germinativo de sementes de mandioca e determinação da divergência genética de genótipos provenientes dos clones Aciolina e GabrielaManihot esculentaGerminaçãoCaractere morfoagronômicoCNPQ::CIENCIAS AGRARIAS::AGRONOMIAThe objective of this paper is to analyze the technical pre- germination treatment of cassava manioc seeds from the clone Gabriela. The analysis was conducted at CCA – UFRR, Boa Vista RR during the period October 2013 to December 2013. Three experiments with a completely randomized layout were carried out, with six treatments (experiments l and ll), seven treatments (experiment lll) and four repetitions for all the other experiments. Experiment l: T1 - Intact seeds; T2- Seeds sanded at the caruncle, T3- Intact seeds immersed in a solution with 2, 5 % of Sodium hypochlorite for 5 minutes. T4 -Seeds sanded at the caruncle and immersed in a solution with 2,5 % of Sodium hypochlorite during five minutes. T5 - Intact seeds immersed in hot water at 80° C until cooled down to room temperature. T6 – Intact seeds immersed in 40% of hydrogen peroxide for 3 seconds. Experiment ll: T1-Whole seeds. T2 - Seeds with the caruncle removed; T3- sanded seeds at the caruncle; T4- Seeds sanded at the opposite side of the caruncle; T5 – Sanded seeds on the opposite side of the caruncle with the caruncle removed and T6 - Seeds sanded at the caruncle and at the side opposite of the caruncle. Experiment lll: T1- Intact seeds; T2 – Seeds with caruncle, scarified at the sides; T3- seeds with the caruncle removed with a pair of pliers. T4- The immersion of Intact seeds in sulfuric acid for ten minutes. T5- Immersion of intact seeds, with the caruncle, in sulfuric acid for 20 minutes. T6 – Immersion of intact seeds in sulfuric acid for 30minutes. T7 – Scarification of the caruncle. The variables analyzed were: The percentages of emergence of normal and abnormal plants from hard and dried up seeds and the indices of the velocity of emergence. The results were submitted to the analysis of variance ((p≤0,05) and the Turkey test at 5% of probability and the measures of the variables were transformed to root ( x+ 0,5). The manioc cassava seeds presented a physical dormance which is overcome with the scarification of the tegument. The manioc seeds after being collected can be sowed as long as they have being through the pre-germination treatment of scarification of the tegument. The scarification treatment of seeds at the sides or at the caruncle, showed more efficiency to increase the emergence over 80%. Key words: Scarification. Bud Breaking. Germination.Objetivou-se com este trabalho avaliar os tratamentos pré-germinativos de sementes de mandioca e determinar a divergência genética de genótipos provenientes de sementes dos clones Aciolina e Gabriela cultivados na savana de Roraima, visando obter variabilidade genética para o uso em programas de melhoramento da cultura da mandioca. Os experimentos foram conduzidos na área experimental do CCA/UFRR. Nos experimentos de análise de germinação das sementes utilizou-se o delineamento experimental inteiramente casualizado, com seis tratamentos (experimentos I e II) e sete tratamentos (experimento III) com quatro repetições do clone Gabriela. Os tratamentos pré-germinativos das sementes da mandioca Gabriela consistiram de escarificação no tegumento da semente, imersão em hipoclorito de sódio (2,5%, por 5 minutos), água quente (80 oC), peróxido de hidrogênio (40%, por 3 segundos) e em ácido sulfúrico (10, 20 e 30 minutos). As variáveis avaliadas foram: percentagens de emergência, de plantas normais e anormais, de sementes duras e mortas, e índice de velocidade de emergência. Os resultados foram submetidos à análise de variância (p≤0,05) e as médias pelo teste de Tukey a 5% de probabilidade. Aos 30 dias após a germinação das sementes fez- se o transplantio de 137 mudas oriundas do clone Aciolina e 198 mudas do clone Gabriela. Aos seis meses após o plantio os genótipos foram caracterizados morfoagronomicamente. Foram realizadas análises multivariadas: componentes principais (ACP) (variáveis quantitativas), análise de agrupamento hierárquico (Average linkage) (variáveis quantitativas e binárias) e agrupamento dos acessos pelo método de Tocher com a matriz de dissimilaridade (variáveis qualitativas). Sementes de mandioca apresentam dormência física que são superadas com escarificação do tegumento. As sementes de mandioca, após serem colhidas, podem ser semeadas desde que sofram tratamentos pré-germinativos por escarificação do tegumento. Os tratamentos em sementes de mandioca com escarificação na carúncula ou nas laterais da semente foram os mais eficientes para aumentar a emergência acima de 80%. Os genótipos avaliados dos clones Aciolina e Gabriela apresentaram diferenças através do uso de caracteres fenotípicos multicategóricos, demonstrando variabilidade genética. Os genótipos expressaram variabilidades eficientes para utilização no melhoramento genético tanto no clone Aciolina quanto no clone Gabriela, o que permitirá a seleção de genótipos superiores. Palavras-chave: Manihot esculenta, germinação, caractere morfoagronômico.Universidade Federal de RoraimaBrasilPOSAGRO - Programa de Pós-Graduação em AgronomiaPOSAGRO - Programa de Pós-Graduação em AgronomiaUFRRAlves, José Maria Arcanjohttp://lattes.cnpq.br/8755520990207122Ximenes, Carla Klis dos Santos2019-12-17T16:08:40Z2019-12-17T16:08:40Z2015info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesishttp://repositorio.ufrr.br:8080/jspui/handle/prefix/228porAttribution-NonCommercial-ShareAlike 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-sa/3.0/br/info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRRinstname:Universidade Federal de Roraima (UFRR)instacron:UFRR2019-12-28T05:00:05Zoai:repositorio.ufrr.br:prefix/228Repositório InstitucionalPUBhttp://repositorio.ufrr.br:8080/oai/requestangelsenhora@gmail.comopendoar:2019-12-28T05:00:05Repositório Institucional da UFRR - Universidade Federal de Roraima (UFRR)false
dc.title.none.fl_str_mv Tratamento pré-germinativo de sementes de mandioca e determinação da divergência genética de genótipos provenientes dos clones Aciolina e Gabriela
title Tratamento pré-germinativo de sementes de mandioca e determinação da divergência genética de genótipos provenientes dos clones Aciolina e Gabriela
spellingShingle Tratamento pré-germinativo de sementes de mandioca e determinação da divergência genética de genótipos provenientes dos clones Aciolina e Gabriela
Ximenes, Carla Klis dos Santos
Manihot esculenta
Germinação
Caractere morfoagronômico
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
title_short Tratamento pré-germinativo de sementes de mandioca e determinação da divergência genética de genótipos provenientes dos clones Aciolina e Gabriela
title_full Tratamento pré-germinativo de sementes de mandioca e determinação da divergência genética de genótipos provenientes dos clones Aciolina e Gabriela
title_fullStr Tratamento pré-germinativo de sementes de mandioca e determinação da divergência genética de genótipos provenientes dos clones Aciolina e Gabriela
title_full_unstemmed Tratamento pré-germinativo de sementes de mandioca e determinação da divergência genética de genótipos provenientes dos clones Aciolina e Gabriela
title_sort Tratamento pré-germinativo de sementes de mandioca e determinação da divergência genética de genótipos provenientes dos clones Aciolina e Gabriela
author Ximenes, Carla Klis dos Santos
author_facet Ximenes, Carla Klis dos Santos
author_role author
dc.contributor.none.fl_str_mv Alves, José Maria Arcanjo
http://lattes.cnpq.br/8755520990207122
dc.contributor.author.fl_str_mv Ximenes, Carla Klis dos Santos
dc.subject.por.fl_str_mv Manihot esculenta
Germinação
Caractere morfoagronômico
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
topic Manihot esculenta
Germinação
Caractere morfoagronômico
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
description The objective of this paper is to analyze the technical pre- germination treatment of cassava manioc seeds from the clone Gabriela. The analysis was conducted at CCA – UFRR, Boa Vista RR during the period October 2013 to December 2013. Three experiments with a completely randomized layout were carried out, with six treatments (experiments l and ll), seven treatments (experiment lll) and four repetitions for all the other experiments. Experiment l: T1 - Intact seeds; T2- Seeds sanded at the caruncle, T3- Intact seeds immersed in a solution with 2, 5 % of Sodium hypochlorite for 5 minutes. T4 -Seeds sanded at the caruncle and immersed in a solution with 2,5 % of Sodium hypochlorite during five minutes. T5 - Intact seeds immersed in hot water at 80° C until cooled down to room temperature. T6 – Intact seeds immersed in 40% of hydrogen peroxide for 3 seconds. Experiment ll: T1-Whole seeds. T2 - Seeds with the caruncle removed; T3- sanded seeds at the caruncle; T4- Seeds sanded at the opposite side of the caruncle; T5 – Sanded seeds on the opposite side of the caruncle with the caruncle removed and T6 - Seeds sanded at the caruncle and at the side opposite of the caruncle. Experiment lll: T1- Intact seeds; T2 – Seeds with caruncle, scarified at the sides; T3- seeds with the caruncle removed with a pair of pliers. T4- The immersion of Intact seeds in sulfuric acid for ten minutes. T5- Immersion of intact seeds, with the caruncle, in sulfuric acid for 20 minutes. T6 – Immersion of intact seeds in sulfuric acid for 30minutes. T7 – Scarification of the caruncle. The variables analyzed were: The percentages of emergence of normal and abnormal plants from hard and dried up seeds and the indices of the velocity of emergence. The results were submitted to the analysis of variance ((p≤0,05) and the Turkey test at 5% of probability and the measures of the variables were transformed to root ( x+ 0,5). The manioc cassava seeds presented a physical dormance which is overcome with the scarification of the tegument. The manioc seeds after being collected can be sowed as long as they have being through the pre-germination treatment of scarification of the tegument. The scarification treatment of seeds at the sides or at the caruncle, showed more efficiency to increase the emergence over 80%. Key words: Scarification. Bud Breaking. Germination.
publishDate 2015
dc.date.none.fl_str_mv 2015
2019-12-17T16:08:40Z
2019-12-17T16:08:40Z
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 http://repositorio.ufrr.br:8080/jspui/handle/prefix/228
url http://repositorio.ufrr.br:8080/jspui/handle/prefix/228
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv Attribution-NonCommercial-ShareAlike 3.0 Brazil
http://creativecommons.org/licenses/by-nc-sa/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-ShareAlike 3.0 Brazil
http://creativecommons.org/licenses/by-nc-sa/3.0/br/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Universidade Federal de Roraima
Brasil
POSAGRO - Programa de Pós-Graduação em Agronomia
POSAGRO - Programa de Pós-Graduação em Agronomia
UFRR
publisher.none.fl_str_mv Universidade Federal de Roraima
Brasil
POSAGRO - Programa de Pós-Graduação em Agronomia
POSAGRO - Programa de Pós-Graduação em Agronomia
UFRR
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRR
instname:Universidade Federal de Roraima (UFRR)
instacron:UFRR
instname_str Universidade Federal de Roraima (UFRR)
instacron_str UFRR
institution UFRR
reponame_str Repositório Institucional da UFRR
collection Repositório Institucional da UFRR
repository.name.fl_str_mv Repositório Institucional da UFRR - Universidade Federal de Roraima (UFRR)
repository.mail.fl_str_mv angelsenhora@gmail.com
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