Cover Image

Polymer coating, germination and vigor of broccoli seeds

Brassica oleracea var italica occupies a special place in the internal and external market of vegetables seeds. Vegetables producers demand seeds with high degree of purity, germination and vigor, since seeds' quality is the basis for the success of the production. In this work, broccoli seeds...

Full description

Main Authors: Almeida, Celina de, Rocha, Sandra Cristina dos Santos, Razera, Luiz Fernandes
Format: Artigo
Language: English
Published: São Paulo - Escola Superior de Agricultura "Luiz de Queiroz" 2017
Subjects:
hydroxyl-ethyl-cellulose
seed coating
spouted bed
hidroxi-etil-celulose
recobrimento de sementes
leito de jorro
Online Access: http://repositorio.unb.br/handle/10482/26467
Tags: Add Tag
No Tags, Be the first to tag this record!
id ir-10482-26467
recordtype dspace
spelling ir-10482-264672019-03-28T14:06:17Z Polymer coating, germination and vigor of broccoli seeds Recobrimento polimérico, germinação e vigor de sementes de brócolos Almeida, Celina de Rocha, Sandra Cristina dos Santos Razera, Luiz Fernandes hydroxyl-ethyl-cellulose seed coating spouted bed hidroxi-etil-celulose recobrimento de sementes leito de jorro Brassica oleracea var italica occupies a special place in the internal and external market of vegetables seeds. Vegetables producers demand seeds with high degree of purity, germination and vigor, since seeds' quality is the basis for the success of the production. In this work, broccoli seeds were coated in a spouted bed, by an aqueous suspension of hidroxy-ethyl-cellulose. Effects of the operating variables: spouting air temperature, atomizing air pressure and coating suspension flow rate over the dependent variables: seeds germination, seeds accelerated aging and the speed of seeds germination in soil, were investigated in a factorial scheme trial. The maximum processing time was 120 min. A totally randomized experiment evaluated and compared seeds germination and vigor of the coated and non-coated seeds. There was no identifiable, pronounced difference on germination of coated and non-coated seeds, accelerated aging of seeds, and speed of seeds germination in the soil. Coating with hidroxy-ethyl-cellulose in the spouted bed did not alter broccoli seeds physiologic quality. The surface of coated seeds presented satisfactory distribution and spreading of the polymer film, uniform and individual coating and homogeneous aspect. Dentre as sementes de hortaliças comercializadas no mercado interno e externo, a Brassica oleracea var. itálica ocupa lugar de destaque. Os produtores de hortaliças têm exigido sementes com alto grau de pureza, germinação e vigor, uma vez que a qualidade das sementes é considerada a base para o sucesso do sistema de produção. Neste trabalho foi avaliado o recobrimento de sementes de brócolos em leito de jorro, utilizando uma suspensão aquosa de hidroxi-etil-celulose. Através de um planejamento fatorial completo de três fatores e dois níveis, determinou-se quantitativamente o efeito das variáveis operacionais: temperatura do ar de jorro, pressão de atomização e vazão de suspensão, sobre as variáveis dependentes: poder de germinação, envelhecimento acelerado e velocidade de germinação em solo. O tempo máximo de processo foi de 120 min. Um delineamento inteiramente casualizado foi aplicado para as mesmas variáveis dependentes, neste caso, avaliando diferenças entre sementes recobertas e não recobertas. Não houve diferença pronunciada na germinação, envelhecimento acelerado das sementes e velocidade de germinação em solo entre sementes recobertas e não recobertas. É possível recobrir sementes de brócolos com hidroxi-etil-celulose, em leito de jorro sem prejuízo à qualidade fisiológica das sementes. A superfície das sementes recobertas apresentou distribuição e dispersão satisfatória do polímero, recobrimento uniforme e individual e aspecto homogêneo. 2017-12-07T04:42:35Z 2017-12-07T04:42:35Z 2005 Artigo Sci. agric. (Piracicaba, Braz.),v.62,n.3,p.221-226,2005 0103-9016 http://repositorio.unb.br/handle/10482/26467 10.1590/S0103-90162005000300004 en Acesso Aberto application/pdf São Paulo - Escola Superior de Agricultura "Luiz de Queiroz" http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000300004&lng=en&nrm=iso http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-90162005000300004&lng=en&nrm=iso http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0103-90162005000300004&lng=en&nrm=iso
institution REPOSITORIO UNB
collection REPOSITORIO UNB
language English
topic hydroxyl-ethyl-cellulose
seed coating
spouted bed
hidroxi-etil-celulose
recobrimento de sementes
leito de jorro
spellingShingle hydroxyl-ethyl-cellulose
seed coating
spouted bed
hidroxi-etil-celulose
recobrimento de sementes
leito de jorro
Almeida, Celina de
Rocha, Sandra Cristina dos Santos
Razera, Luiz Fernandes
Polymer coating, germination and vigor of broccoli seeds
description Brassica oleracea var italica occupies a special place in the internal and external market of vegetables seeds. Vegetables producers demand seeds with high degree of purity, germination and vigor, since seeds' quality is the basis for the success of the production. In this work, broccoli seeds were coated in a spouted bed, by an aqueous suspension of hidroxy-ethyl-cellulose. Effects of the operating variables: spouting air temperature, atomizing air pressure and coating suspension flow rate over the dependent variables: seeds germination, seeds accelerated aging and the speed of seeds germination in soil, were investigated in a factorial scheme trial. The maximum processing time was 120 min. A totally randomized experiment evaluated and compared seeds germination and vigor of the coated and non-coated seeds. There was no identifiable, pronounced difference on germination of coated and non-coated seeds, accelerated aging of seeds, and speed of seeds germination in the soil. Coating with hidroxy-ethyl-cellulose in the spouted bed did not alter broccoli seeds physiologic quality. The surface of coated seeds presented satisfactory distribution and spreading of the polymer film, uniform and individual coating and homogeneous aspect.
format Artigo
author Almeida, Celina de
Rocha, Sandra Cristina dos Santos
Razera, Luiz Fernandes
author_sort Almeida, Celina de
title Polymer coating, germination and vigor of broccoli seeds
title_short Polymer coating, germination and vigor of broccoli seeds
title_full Polymer coating, germination and vigor of broccoli seeds
title_fullStr Polymer coating, germination and vigor of broccoli seeds
title_full_unstemmed Polymer coating, germination and vigor of broccoli seeds
title_sort polymer coating, germination and vigor of broccoli seeds
publisher São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
publishDate 2017
url http://repositorio.unb.br/handle/10482/26467
_version_ 1641988204912443392
score 13.657419

Similar Items