Effect of shading and growing season on the agronomic performance of jambu
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/77257 |
Resumo: | The jambu (Acmella oleracea) production can be influenced by the growing season and light available for metabolic processes. This study aimed to assess the agronomic and physiological performance of two jambu varieties, under different shading levels, during the winter and summer of the Brazilian Amazon. Two random block experiments were conducted, in a 2 x 4 factorial scheme, consisting of two jambu varieties (yellow and purple flower) and four shading levels (0, 30, 50 and 70 %), with four replications. Physiological, growth and yield traits were assessed. There was no significant interaction between treatments and growing seasons (Amazon winter and summer) for growth or yield traits, nor between treatments for the physiological characteristics. The cultivation without shading screen can increase the shoot dry weight of both varieties; the yellow flower variety exhibited early-onset flowering regardless of the shading screen used; the “Amazon summer” growing season increased the jambu yield by 33 %, while the 70 % shading reduced the net photosynthetic rate, consequently not favoring the vegetative development of the jambu plants. As such, it is recommended that the yellow and purple flower jambu varieties be grown without shading screen in the Amazon summer. KEYWORDS: Acmella oleracea [L.] R. K. Jansen, unconventional food plant, Amazon. |
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Effect of shading and growing season on the agronomic performance of jambuSombreamento e época de cultivo no desempenho agronômico de jambuThe jambu (Acmella oleracea) production can be influenced by the growing season and light available for metabolic processes. This study aimed to assess the agronomic and physiological performance of two jambu varieties, under different shading levels, during the winter and summer of the Brazilian Amazon. Two random block experiments were conducted, in a 2 x 4 factorial scheme, consisting of two jambu varieties (yellow and purple flower) and four shading levels (0, 30, 50 and 70 %), with four replications. Physiological, growth and yield traits were assessed. There was no significant interaction between treatments and growing seasons (Amazon winter and summer) for growth or yield traits, nor between treatments for the physiological characteristics. The cultivation without shading screen can increase the shoot dry weight of both varieties; the yellow flower variety exhibited early-onset flowering regardless of the shading screen used; the “Amazon summer” growing season increased the jambu yield by 33 %, while the 70 % shading reduced the net photosynthetic rate, consequently not favoring the vegetative development of the jambu plants. As such, it is recommended that the yellow and purple flower jambu varieties be grown without shading screen in the Amazon summer. KEYWORDS: Acmella oleracea [L.] R. K. Jansen, unconventional food plant, Amazon.A produção de jambu pode ser influenciada pela época de cultivo e luminosidade disponível para processos metabólicos. Objetivou-se avaliar o desempenho agronômico e fisiológico de variedades de jambu, em diferentes níveis de sombreamento, no inverno e verão amazônicos. Foram realizados dois ensaios no delineamento de blocos ao acaso, em esquema fatorial 2 x 4, sendo duas variedades de jambu (flor amarela e roxa) e quatro níveis de sombreamento (0, 30, 50 e 70 %), com quatro repetições. Foram avaliadas características de crescimento, produção e fisiológicas. Não houve interação significativa entre os tratamentos e as épocas de cultivo (inverno e verão amazônicos) para as características de crescimento e produção. Para as fisiológicas, também não houve interação entre os tratamentos. O cultivo sem tela pode aumentar a massa seca da parte aérea em ambas as variedades; a variedade flor amarela apresentou precocidade para o início do florescimento, independentemente da tela utilizada; e a época do ano “verão amazônico” proporcionou aumento de 33 % para a produção de plantas de jambu, enquanto o nível de 70 % de sombreamento diminuiu a taxa fotossintética líquida, não favorecendo o desenvolvimento vegetativo do jambu. Assim, recomenda-se o cultivo das variedades de jambu flor roxa e amarela em ambiente sem tela no verão amazônico. PALAVRAS-CHAVE: Acmella oleracea [L.] R. K. Jansen, planta alimentícia não convencional, Amazônia.Escola de Agronomia - Universidade Federal de Goiás2023-12-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/77257Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; Vol. 53 (2023); e77257Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); Vol. 53 (2023); e77257Pesquisa Agropecuária Tropical; v. 53 (2023); e772571983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/77257/40563Copyright (c) 2023 Pesquisa Agropecuária Tropicalinfo:eu-repo/semantics/openAccessSilva, Andressa de OliveiraBarral, Deiviane de SouzaRosário, Isabelle Caroline Bailosa doSantos, Lucas da SilvaGomes, Rafaelle Fazzi2023-12-14T18:24:51Zoai:ojs.revistas.ufg.br:article/77257Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:40.473360Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
Effect of shading and growing season on the agronomic performance of jambu Sombreamento e época de cultivo no desempenho agronômico de jambu |
title |
Effect of shading and growing season on the agronomic performance of jambu |
spellingShingle |
Effect of shading and growing season on the agronomic performance of jambu Silva, Andressa de Oliveira |
title_short |
Effect of shading and growing season on the agronomic performance of jambu |
title_full |
Effect of shading and growing season on the agronomic performance of jambu |
title_fullStr |
Effect of shading and growing season on the agronomic performance of jambu |
title_full_unstemmed |
Effect of shading and growing season on the agronomic performance of jambu |
title_sort |
Effect of shading and growing season on the agronomic performance of jambu |
author |
Silva, Andressa de Oliveira |
author_facet |
Silva, Andressa de Oliveira Barral, Deiviane de Souza Rosário, Isabelle Caroline Bailosa do Santos, Lucas da Silva Gomes, Rafaelle Fazzi |
author_role |
author |
author2 |
Barral, Deiviane de Souza Rosário, Isabelle Caroline Bailosa do Santos, Lucas da Silva Gomes, Rafaelle Fazzi |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Silva, Andressa de Oliveira Barral, Deiviane de Souza Rosário, Isabelle Caroline Bailosa do Santos, Lucas da Silva Gomes, Rafaelle Fazzi |
description |
The jambu (Acmella oleracea) production can be influenced by the growing season and light available for metabolic processes. This study aimed to assess the agronomic and physiological performance of two jambu varieties, under different shading levels, during the winter and summer of the Brazilian Amazon. Two random block experiments were conducted, in a 2 x 4 factorial scheme, consisting of two jambu varieties (yellow and purple flower) and four shading levels (0, 30, 50 and 70 %), with four replications. Physiological, growth and yield traits were assessed. There was no significant interaction between treatments and growing seasons (Amazon winter and summer) for growth or yield traits, nor between treatments for the physiological characteristics. The cultivation without shading screen can increase the shoot dry weight of both varieties; the yellow flower variety exhibited early-onset flowering regardless of the shading screen used; the “Amazon summer” growing season increased the jambu yield by 33 %, while the 70 % shading reduced the net photosynthetic rate, consequently not favoring the vegetative development of the jambu plants. As such, it is recommended that the yellow and purple flower jambu varieties be grown without shading screen in the Amazon summer. KEYWORDS: Acmella oleracea [L.] R. K. Jansen, unconventional food plant, Amazon. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-12-14 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Avaliado por pares |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/pat/article/view/77257 |
url |
https://revistas.ufg.br/pat/article/view/77257 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/77257/40563 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2023 Pesquisa Agropecuária Tropical info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2023 Pesquisa Agropecuária Tropical |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; Vol. 53 (2023); e77257 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); Vol. 53 (2023); e77257 Pesquisa Agropecuária Tropical; v. 53 (2023); e77257 1983-4063 reponame:Pesquisa Agropecuária Tropical (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Pesquisa Agropecuária Tropical (Online) |
collection |
Pesquisa Agropecuária Tropical (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
aseleguini.pat@gmail.com||mgoes@agro.ufg.br |
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1799874821644877824 |