Yield and morphophysiological indices of irrigated rice genotypes in contrasting ecosystems
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2017 |
| Outros Autores: | , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
| Texto Completo: | https://revistas.ufg.br/pat/article/view/45955 |
Resumo: | Rice phenology and development are events controlled by environmental and genetic factors, and the yield potential of the crop is defined by their interaction. This study aimed at analyzing the performance of irrigated rice genotypes in contrasting ecosystems and their effects on morphophysiological characteristics. Two ecosystems (tropical and subtropical) were analyzed, as well as cultivars recommended for tropical (BRS Catiana and BRS Jaçanã) and subtropical (BRS Pampa, BRS 7 Taim and IRGA 424) regions. The experiments were arranged in a complete randomized block design, with four replicates, being the factors the genotypes, sowing times and sites. The phenological development, biomass dynamics, radiation use efficiency and grain yield were evaluated. The accumulated degree-days demand for flowering decreased faster in the tropical ecosystem than in the subtropical ecosystem for late sowing. The radiation use efficiency values were similar in the subtropical ecosystem and yield was high for all sowing dates. On the other hand, the tropical ecosystem showed a high variation for radiation use efficiency values and yield. The higher accumulation of degree-days and solar radiation during the reproductive and grain-filling phases contributed to increase yield in both ecosystems. |
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Yield and morphophysiological indices of irrigated rice genotypes in contrasting ecosystemsProdutividade e índices morfofisiológicos de genótipos de arroz irrigado em ecossistemas contrastantesOryza sativa L.ecophysiologysowing datesolar radiation.Oryza sativa L.ecofisiologiaépoca de semeaduraradiação solar.Rice phenology and development are events controlled by environmental and genetic factors, and the yield potential of the crop is defined by their interaction. This study aimed at analyzing the performance of irrigated rice genotypes in contrasting ecosystems and their effects on morphophysiological characteristics. Two ecosystems (tropical and subtropical) were analyzed, as well as cultivars recommended for tropical (BRS Catiana and BRS Jaçanã) and subtropical (BRS Pampa, BRS 7 Taim and IRGA 424) regions. The experiments were arranged in a complete randomized block design, with four replicates, being the factors the genotypes, sowing times and sites. The phenological development, biomass dynamics, radiation use efficiency and grain yield were evaluated. The accumulated degree-days demand for flowering decreased faster in the tropical ecosystem than in the subtropical ecosystem for late sowing. The radiation use efficiency values were similar in the subtropical ecosystem and yield was high for all sowing dates. On the other hand, the tropical ecosystem showed a high variation for radiation use efficiency values and yield. The higher accumulation of degree-days and solar radiation during the reproductive and grain-filling phases contributed to increase yield in both ecosystems.A fenologia e o desenvolvimento da planta de arroz são eventos controlados por condições ambientais e fatores genéticos, sendo o potencial produtivo da cultura definido pela sua interação. Objetivou-se analisar o desempenho de genótipos de arroz irrigado em ecossistemas contrastantes e seus efeitos nas características morfofisiológicas. Dois ecossistemas foram analisados (tropical e subtropical), bem como cultivares recomendadas para regiões tropicais (BRS Catiana e BRS Jaçanã) e subtropicais (BRS Pampa, BRS 7 Taim e IRGA 424). O delineamento foi o de blocos casualizados, com quatros repetições, sendo fatores os genótipos, épocas de semeadura e sítios. Avaliou-se o desenvolvimento fenológico, dinâmica da biomassa, eficiência no uso da radiação e a produtividade de grãos. No ecossistema tropical, a demanda de graus-dia acumulados para o florescimento decresceu com maior magnitude que no subtropical, para as semeaduras tardias. No ecossistema subtropical, os valores de eficiência no uso da radiação foram similares e a produtividade elevada para todas as épocas de semeadura. Já no tropical, verificou-se variação nos valores de eficiência no uso da radiação e produtividade. Maiores acúmulos de graus-dia e de radiação solar na fase reprodutiva e de enchimento de grãos contribuíram para o aumento da produtividade em ambos os ecossistemas.Escola de Agronomia - Universidade Federal de Goiás2017-09-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/45955Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 47, n. 3, Jul./Sep. 2017; 253-264Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 47, n. 3, jul./set. 2017; 253-264Pesquisa Agropecuária Tropical; v. 47, n. 3, jul./set. 2017; 253-2641983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/45955/24148Copyright (c) 2017 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)info:eu-repo/semantics/openAccessSantos, Marcos Paulo dosZanon, Alencar JuniorCuadra, Santiago ViannaSteinmetz, SilvioCastro, João Rodrigo deHeinemann, Alexandre Bryan2020-07-13T18:41:44Zoai:ojs.revistas.ufg.br:article/45955Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:16.932260Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
| dc.title.none.fl_str_mv |
Yield and morphophysiological indices of irrigated rice genotypes in contrasting ecosystems Produtividade e índices morfofisiológicos de genótipos de arroz irrigado em ecossistemas contrastantes |
| title |
Yield and morphophysiological indices of irrigated rice genotypes in contrasting ecosystems |
| spellingShingle |
Yield and morphophysiological indices of irrigated rice genotypes in contrasting ecosystems Santos, Marcos Paulo dos Oryza sativa L. ecophysiology sowing date solar radiation. Oryza sativa L. ecofisiologia época de semeadura radiação solar. |
| title_short |
Yield and morphophysiological indices of irrigated rice genotypes in contrasting ecosystems |
| title_full |
Yield and morphophysiological indices of irrigated rice genotypes in contrasting ecosystems |
| title_fullStr |
Yield and morphophysiological indices of irrigated rice genotypes in contrasting ecosystems |
| title_full_unstemmed |
Yield and morphophysiological indices of irrigated rice genotypes in contrasting ecosystems |
| title_sort |
Yield and morphophysiological indices of irrigated rice genotypes in contrasting ecosystems |
| author |
Santos, Marcos Paulo dos |
| author_facet |
Santos, Marcos Paulo dos Zanon, Alencar Junior Cuadra, Santiago Vianna Steinmetz, Silvio Castro, João Rodrigo de Heinemann, Alexandre Bryan |
| author_role |
author |
| author2 |
Zanon, Alencar Junior Cuadra, Santiago Vianna Steinmetz, Silvio Castro, João Rodrigo de Heinemann, Alexandre Bryan |
| author2_role |
author author author author author |
| dc.contributor.author.fl_str_mv |
Santos, Marcos Paulo dos Zanon, Alencar Junior Cuadra, Santiago Vianna Steinmetz, Silvio Castro, João Rodrigo de Heinemann, Alexandre Bryan |
| dc.subject.por.fl_str_mv |
Oryza sativa L. ecophysiology sowing date solar radiation. Oryza sativa L. ecofisiologia época de semeadura radiação solar. |
| topic |
Oryza sativa L. ecophysiology sowing date solar radiation. Oryza sativa L. ecofisiologia época de semeadura radiação solar. |
| description |
Rice phenology and development are events controlled by environmental and genetic factors, and the yield potential of the crop is defined by their interaction. This study aimed at analyzing the performance of irrigated rice genotypes in contrasting ecosystems and their effects on morphophysiological characteristics. Two ecosystems (tropical and subtropical) were analyzed, as well as cultivars recommended for tropical (BRS Catiana and BRS Jaçanã) and subtropical (BRS Pampa, BRS 7 Taim and IRGA 424) regions. The experiments were arranged in a complete randomized block design, with four replicates, being the factors the genotypes, sowing times and sites. The phenological development, biomass dynamics, radiation use efficiency and grain yield were evaluated. The accumulated degree-days demand for flowering decreased faster in the tropical ecosystem than in the subtropical ecosystem for late sowing. The radiation use efficiency values were similar in the subtropical ecosystem and yield was high for all sowing dates. On the other hand, the tropical ecosystem showed a high variation for radiation use efficiency values and yield. The higher accumulation of degree-days and solar radiation during the reproductive and grain-filling phases contributed to increase yield in both ecosystems. |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017-09-04 |
| 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/45955 |
| url |
https://revistas.ufg.br/pat/article/view/45955 |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/45955/24148 |
| dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
Copyright (c) 2017 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) |
| 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]; v. 47, n. 3, Jul./Sep. 2017; 253-264 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 47, n. 3, jul./set. 2017; 253-264 Pesquisa Agropecuária Tropical; v. 47, n. 3, jul./set. 2017; 253-264 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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1799874819802529792 |