Correlation among volumetric weight and other characteristics of guinea grass
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | |
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/15163 |
Resumo: | The present study was carried out in the seed laboratory of the Escola Superior de Agricultura Luiz de Queiroz in the University of São Paulo. Its purpose was to study correlations among volumetric weight, humidity level, physical purity, germination percentage, germination speed, weight of one thousand seeds, and percentage of alive pure seeds of Guinea grass (Panicum maximum Jacq.). The sample homogenization and division were executed by centrifugal divisor and the weight determinations by analytical scale. The germination analysis was carried out twice within six and a half-month interval and all the others determinations once. The Rules for Seed Analysis were followed for the laboratory determinations, except for germination speed and cultural value of seeds. The analysis of the data collected allowed the following conclusions: a. The volumetric weight can be utilized as satisfactory indicator for seed quality of Guinea grass, based on the positive and significative correlation with the percentage of alive pure seeds; b. the weight of one thousand seeds and its purity can be utilized as complementary indicator of the volumetric weight on the seed quality evaluation. It is suggested to continue the research on the subject. |
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Correlation among volumetric weight and other characteristics of guinea grassCorrelação entre peso volumétrico e outras características de sementes de capim-coloniãogermination; physical purity; cultural valuegerminação; pureza física; valor culturalThe present study was carried out in the seed laboratory of the Escola Superior de Agricultura Luiz de Queiroz in the University of São Paulo. Its purpose was to study correlations among volumetric weight, humidity level, physical purity, germination percentage, germination speed, weight of one thousand seeds, and percentage of alive pure seeds of Guinea grass (Panicum maximum Jacq.). The sample homogenization and division were executed by centrifugal divisor and the weight determinations by analytical scale. The germination analysis was carried out twice within six and a half-month interval and all the others determinations once. The Rules for Seed Analysis were followed for the laboratory determinations, except for germination speed and cultural value of seeds. The analysis of the data collected allowed the following conclusions: a. The volumetric weight can be utilized as satisfactory indicator for seed quality of Guinea grass, based on the positive and significative correlation with the percentage of alive pure seeds; b. the weight of one thousand seeds and its purity can be utilized as complementary indicator of the volumetric weight on the seed quality evaluation. It is suggested to continue the research on the subject.Trabalho realizado no laboratório de sementes do Departamento de Agricultura e Horticultura, da Escola Superior de Agricultura Luiz de Queiroz, da Universidade de São Paulo, 1978, com o objetivo de estudar as correlações entre peso volumétrico, teor de umidade, pureza física, percentagem de germinação, velocidade de germinação, peso de mil sementes e valor cultural de sementes de capim-colonião (Panicum maximum Jacq.). Para homogeneização e divisão de amostras utilizou-se divisor centrífugo, e, em todas as pesagens, balança analítica. A análise de germinação foi realizada em duas épocas, com uma diferença entre si de 6,5 meses; as demais análises foram feitas somente na primeira época. Para as determinações foram seguidas as prescrições das Regras para Análise de Sementes, exceto para velocidade de germinação e valor cultural. A análise dos resultados permitiu concluir-se que: a. o peso volumétrico, tendo em vista a correlação positiva e significativa com o valor cultural, pode ser utilizado como indicador satisfatório para avaliação da qualidade das sementes de capim-colonião; b. o peso de mil sementes e a pureza podem ser utilizados como indicação auxiliar do peso volumétrico na avaliação da qualidade dessas sementes. Sugere-se a continuação da pesquisa.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCosta, Edgard Ferreira daToledo, Francisco Ferraz de2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15163Pesquisa Agropecuaria Brasileira; v.18, n.2, fev. 1983; 111-120Pesquisa Agropecuária Brasileira; v.18, n.2, fev. 1983; 111-1201678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15163/8956info:eu-repo/semantics/openAccess2014-04-16T18:50:35Zoai:ojs.seer.sct.embrapa.br:article/15163Revistahttp://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 |
Correlation among volumetric weight and other characteristics of guinea grass Correlação entre peso volumétrico e outras características de sementes de capim-colonião |
title |
Correlation among volumetric weight and other characteristics of guinea grass |
spellingShingle |
Correlation among volumetric weight and other characteristics of guinea grass Costa, Edgard Ferreira da germination; physical purity; cultural value germinação; pureza física; valor cultural |
title_short |
Correlation among volumetric weight and other characteristics of guinea grass |
title_full |
Correlation among volumetric weight and other characteristics of guinea grass |
title_fullStr |
Correlation among volumetric weight and other characteristics of guinea grass |
title_full_unstemmed |
Correlation among volumetric weight and other characteristics of guinea grass |
title_sort |
Correlation among volumetric weight and other characteristics of guinea grass |
author |
Costa, Edgard Ferreira da |
author_facet |
Costa, Edgard Ferreira da Toledo, Francisco Ferraz de |
author_role |
author |
author2 |
Toledo, Francisco Ferraz de |
author2_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Costa, Edgard Ferreira da Toledo, Francisco Ferraz de |
dc.subject.por.fl_str_mv |
germination; physical purity; cultural value germinação; pureza física; valor cultural |
topic |
germination; physical purity; cultural value germinação; pureza física; valor cultural |
description |
The present study was carried out in the seed laboratory of the Escola Superior de Agricultura Luiz de Queiroz in the University of São Paulo. Its purpose was to study correlations among volumetric weight, humidity level, physical purity, germination percentage, germination speed, weight of one thousand seeds, and percentage of alive pure seeds of Guinea grass (Panicum maximum Jacq.). The sample homogenization and division were executed by centrifugal divisor and the weight determinations by analytical scale. The germination analysis was carried out twice within six and a half-month interval and all the others determinations once. The Rules for Seed Analysis were followed for the laboratory determinations, except for germination speed and cultural value of seeds. The analysis of the data collected allowed the following conclusions: a. The volumetric weight can be utilized as satisfactory indicator for seed quality of Guinea grass, based on the positive and significative correlation with the percentage of alive pure seeds; b. the weight of one thousand seeds and its purity can be utilized as complementary indicator of the volumetric weight on the seed quality evaluation. It is suggested to continue the research on the subject. |
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/15163 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/15163 |
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/15163/8956 |
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; 111-120 Pesquisa Agropecuária Brasileira; v.18, n.2, fev. 1983; 111-120 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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