Grain yield and quality of irrigated rice in seasons with different thermal regimes at flowering

Detalhes bibliográficos
Autor(a) principal: de Souza, Natalia Maria
Data de Publicação: 2020
Outros Autores: Marschalek, Rubens, Sangoi, Luis
Tipo de documento: Artigo
Idioma: por
Título da fonte: Agropecuária Catarinense (Online)
Texto Completo: https://publicacoes.epagri.sc.gov.br/rac/article/view/793
Resumo: Temperature is one of the most important climatic factors for rice production. Temperatures above 35ºC limit the production of this cereal, damaging irreversibly its yield. Anthesis is the most sensitive phase of rice to the occurrence of high temperatures. This experiment was carried out aiming to evaluate the agronomic performance and grain quality of five rice genotypes (Epagri 109, SCS116 Satoru, SCS121 CL, SCS122 Miura and SC 676) at two growing seasons (2016/17 and 2017/18), correlating them with the air temperature during anthesis and grain filling. The following variables were assessed: spikelet sterility, yield, mass of 1,000 grains and postharvest qualitative aspects (milling yield and chalky grain percentage). The temperatures recorded in the 2016/17 growing season from anthesis to harvest were higher than in 2017/18. They present averages of 30.5 and 28.5ºC and maximum temperatures of 34.3 and 30.9ºC for each experimental year, respectively. The higher temperatures of the first growing season reduced grain yield, 1,000 grain mass and milling yield. They also increased spikelet sterility and chalky grains. The inbreed line SC 676 presented the highest yield (13,070kg ha-1), however, it was also the genotype with worst grain quality.
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spelling Grain yield and quality of irrigated rice in seasons with different thermal regimes at floweringProdutividade e qualidade de grãos de arroz irrigado em safras com regimes térmicos distintos na floraçãoOryza sativaHeatSterilityGrain quality.Oryza sativaCalorEsterilidadeQualidade de grãosHeatSterilityGrain qualityTemperature is one of the most important climatic factors for rice production. Temperatures above 35ºC limit the production of this cereal, damaging irreversibly its yield. Anthesis is the most sensitive phase of rice to the occurrence of high temperatures. This experiment was carried out aiming to evaluate the agronomic performance and grain quality of five rice genotypes (Epagri 109, SCS116 Satoru, SCS121 CL, SCS122 Miura and SC 676) at two growing seasons (2016/17 and 2017/18), correlating them with the air temperature during anthesis and grain filling. The following variables were assessed: spikelet sterility, yield, mass of 1,000 grains and postharvest qualitative aspects (milling yield and chalky grain percentage). The temperatures recorded in the 2016/17 growing season from anthesis to harvest were higher than in 2017/18. They present averages of 30.5 and 28.5ºC and maximum temperatures of 34.3 and 30.9ºC for each experimental year, respectively. The higher temperatures of the first growing season reduced grain yield, 1,000 grain mass and milling yield. They also increased spikelet sterility and chalky grains. The inbreed line SC 676 presented the highest yield (13,070kg ha-1), however, it was also the genotype with worst grain quality.A temperatura é um dos fatores climáticos mais importantes para o cultivo de arroz. Temperaturas acima de 35ºC limitam a produção deste cereal, podendo acarretar prejuízos irreversíveis à produtividade. A antese é a fase mais sensível do arroz à ocorrência de altas temperaturas. Este trabalho foi conduzido com o objetivo de avaliar o desempenho agronômico e a qualidade de grãos de cinco genótipos (Epagri 109, SCS116 Satoru, SCS121 CL, SCS122 Miura e SC 676), em duas safras agrícolas (2016/17 e 2017/18), correlacionando-os com a temperatura do ar durante a antese e o enchimento de grãos. Avaliaram-se a esterilidade de espiguetas, a produtividade, a massa de 1.000 grãos e aspectos qualitativos de pós-colheita (rendimento de engenho e percentual de gesso). As temperaturas observadas na safra 2016/17 da antese até a colheita foram superiores às observadas na safra 2017/18, apresentando médias de 30,5 e 28,5ºC e temperaturas máximas de 34,3 e 30,9ºC para cada safra, respectivamente. As temperaturas mais elevadas na primeira safra reduziram a produtividade, a massa de 1.000 grãos e o rendimento de engenho. Elas também aumentaram a esterilidade de espiguetas e o percentual de gesso. A linhagem SC 676 apresentou a maior produtividade (13.070 kg ha-1), porém foi o genótipo com pior qualidade de grãos.  Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri2020-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://publicacoes.epagri.sc.gov.br/rac/article/view/79310.52945/rac.v33i2.793Agropecuária Catarinense Journal; Vol. 33 No. 2 (2020); 54-58Agropecuária Catarinense; v. 33 n. 2 (2020); 54-582525-60760103-0779reponame:Agropecuária Catarinense (Online)instname:Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)instacron:EPAGRIporhttps://publicacoes.epagri.sc.gov.br/rac/article/view/793/944Copyright (c) 2020 Autoreshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessde Souza, Natalia MariaMarschalek, RubensSangoi, Luis2020-11-13T01:15:35Zoai:ojs.publicacoes.epagri.sc.gov.br:article/793Revistahttps://publicacoes.epagri.sc.gov.br/RAC/indexPUBhttps://publicacoes.epagri.sc.gov.br/index.php/RAC/oaieditoriarac@epagri.sc.gov.br || lamperuch@epagri.sc.gov.br2525-60760103-0779opendoar:2020-11-13T01:15:35Agropecuária Catarinense (Online) - Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)false
dc.title.none.fl_str_mv Grain yield and quality of irrigated rice in seasons with different thermal regimes at flowering
Produtividade e qualidade de grãos de arroz irrigado em safras com regimes térmicos distintos na floração
title Grain yield and quality of irrigated rice in seasons with different thermal regimes at flowering
spellingShingle Grain yield and quality of irrigated rice in seasons with different thermal regimes at flowering
de Souza, Natalia Maria
Oryza sativa
Heat
Sterility
Grain quality.
Oryza sativa
Calor
Esterilidade
Qualidade de grãos
Heat
Sterility
Grain quality
title_short Grain yield and quality of irrigated rice in seasons with different thermal regimes at flowering
title_full Grain yield and quality of irrigated rice in seasons with different thermal regimes at flowering
title_fullStr Grain yield and quality of irrigated rice in seasons with different thermal regimes at flowering
title_full_unstemmed Grain yield and quality of irrigated rice in seasons with different thermal regimes at flowering
title_sort Grain yield and quality of irrigated rice in seasons with different thermal regimes at flowering
author de Souza, Natalia Maria
author_facet de Souza, Natalia Maria
Marschalek, Rubens
Sangoi, Luis
author_role author
author2 Marschalek, Rubens
Sangoi, Luis
author2_role author
author
dc.contributor.author.fl_str_mv de Souza, Natalia Maria
Marschalek, Rubens
Sangoi, Luis
dc.subject.por.fl_str_mv Oryza sativa
Heat
Sterility
Grain quality.
Oryza sativa
Calor
Esterilidade
Qualidade de grãos
Heat
Sterility
Grain quality
topic Oryza sativa
Heat
Sterility
Grain quality.
Oryza sativa
Calor
Esterilidade
Qualidade de grãos
Heat
Sterility
Grain quality
description Temperature is one of the most important climatic factors for rice production. Temperatures above 35ºC limit the production of this cereal, damaging irreversibly its yield. Anthesis is the most sensitive phase of rice to the occurrence of high temperatures. This experiment was carried out aiming to evaluate the agronomic performance and grain quality of five rice genotypes (Epagri 109, SCS116 Satoru, SCS121 CL, SCS122 Miura and SC 676) at two growing seasons (2016/17 and 2017/18), correlating them with the air temperature during anthesis and grain filling. The following variables were assessed: spikelet sterility, yield, mass of 1,000 grains and postharvest qualitative aspects (milling yield and chalky grain percentage). The temperatures recorded in the 2016/17 growing season from anthesis to harvest were higher than in 2017/18. They present averages of 30.5 and 28.5ºC and maximum temperatures of 34.3 and 30.9ºC for each experimental year, respectively. The higher temperatures of the first growing season reduced grain yield, 1,000 grain mass and milling yield. They also increased spikelet sterility and chalky grains. The inbreed line SC 676 presented the highest yield (13,070kg ha-1), however, it was also the genotype with worst grain quality.
publishDate 2020
dc.date.none.fl_str_mv 2020-09-01
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://publicacoes.epagri.sc.gov.br/rac/article/view/793
10.52945/rac.v33i2.793
url https://publicacoes.epagri.sc.gov.br/rac/article/view/793
identifier_str_mv 10.52945/rac.v33i2.793
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://publicacoes.epagri.sc.gov.br/rac/article/view/793/944
dc.rights.driver.fl_str_mv Copyright (c) 2020 Autores
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2020 Autores
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri
publisher.none.fl_str_mv Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri
dc.source.none.fl_str_mv Agropecuária Catarinense Journal; Vol. 33 No. 2 (2020); 54-58
Agropecuária Catarinense; v. 33 n. 2 (2020); 54-58
2525-6076
0103-0779
reponame:Agropecuária Catarinense (Online)
instname:Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
instacron:EPAGRI
instname_str Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
instacron_str EPAGRI
institution EPAGRI
reponame_str Agropecuária Catarinense (Online)
collection Agropecuária Catarinense (Online)
repository.name.fl_str_mv Agropecuária Catarinense (Online) - Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
repository.mail.fl_str_mv editoriarac@epagri.sc.gov.br || lamperuch@epagri.sc.gov.br
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