Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigation
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/29274 |
Resumo: | Among physiological disorders, chalkiness is one of the main problems in rice breeding since it directly affects grain quality and rice price in the market. Chalkiness can occur due both genotypic and environmental effects, including malformed grains, moisture content, pest attack, and water stress. Therefore, the study of mechanisms influencing the expression of chalkiness can greatly help breeders to deal with this problem. The objective of this study was to access the influence of water supply on the occurrence of chalkiness in rice grains of twenty elite inbred lines from the Upland Rice Breeding Program from the Brazilian public research institutions UFLA, EMBRAPA and EPAMIG. Lines were evaluated for grain chalkiness in two irrigated environments and in a non-irrigated one. The experiments were carried out in the 2013/2014 growing season following a randomized block design with three replications. The proportion of chalkiness was accounted of the number of chalky grains of a random sample of 100 grains taken from 10 random panicles of each plot. Genotype x environment interaction was significant in the combined analysis of variance of all environments, so progenies performance varied across environments. Lines showed variability for chalkiness on the non-irrigated environment and on the mean of all environments, but they did not differed on the irrigated environments separately, indicating that the expression of chalkiness in this study occurred mostly due to the environment rather than to genotypes. Lines evaluated in the non-irrigated environment showed a significant large proportion of chalky grains compared to the proportion found in the irrigated environments, suggesting that water supply influenced the expression of grain chalkiness. Lines CMG 1987 and CMG 1698 showed significant tolerance of chalkiness in the non-irrigated condition. |
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Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigationOriza sativaWater stressGrain qualityPlant breedingAmong physiological disorders, chalkiness is one of the main problems in rice breeding since it directly affects grain quality and rice price in the market. Chalkiness can occur due both genotypic and environmental effects, including malformed grains, moisture content, pest attack, and water stress. Therefore, the study of mechanisms influencing the expression of chalkiness can greatly help breeders to deal with this problem. The objective of this study was to access the influence of water supply on the occurrence of chalkiness in rice grains of twenty elite inbred lines from the Upland Rice Breeding Program from the Brazilian public research institutions UFLA, EMBRAPA and EPAMIG. Lines were evaluated for grain chalkiness in two irrigated environments and in a non-irrigated one. The experiments were carried out in the 2013/2014 growing season following a randomized block design with three replications. The proportion of chalkiness was accounted of the number of chalky grains of a random sample of 100 grains taken from 10 random panicles of each plot. Genotype x environment interaction was significant in the combined analysis of variance of all environments, so progenies performance varied across environments. Lines showed variability for chalkiness on the non-irrigated environment and on the mean of all environments, but they did not differed on the irrigated environments separately, indicating that the expression of chalkiness in this study occurred mostly due to the environment rather than to genotypes. Lines evaluated in the non-irrigated environment showed a significant large proportion of chalky grains compared to the proportion found in the irrigated environments, suggesting that water supply influenced the expression of grain chalkiness. Lines CMG 1987 and CMG 1698 showed significant tolerance of chalkiness in the non-irrigated condition.2018-05-18T16:21:48Z2018-05-18T16:21:48Z2016-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfPIEROBON, F. et al. Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigation. International Journal of Current Research, [S.l.], v. 8, n. 2, p. 26480-26483, Feb. 2016.http://repositorio.ufla.br/jspui/handle/1/29274International Journal of Current Researchreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessPierobon, FelipeMendes, Marcela PedrosoSantos, Heloisa Oliveira dosLima, Isabela Pereira deRodrigues, Cínthia SouzaAlves, Natália BotegaBruzi, Adriano TeodoroReis, Moizés de SouzaBotelho, Flávia Barbosa Silvaeng2018-05-18T16:21:49Zoai:localhost:1/29274Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2018-05-18T16:21:49Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigation |
title |
Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigation |
spellingShingle |
Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigation Pierobon, Felipe Oriza sativa Water stress Grain quality Plant breeding |
title_short |
Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigation |
title_full |
Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigation |
title_fullStr |
Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigation |
title_full_unstemmed |
Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigation |
title_sort |
Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigation |
author |
Pierobon, Felipe |
author_facet |
Pierobon, Felipe Mendes, Marcela Pedroso Santos, Heloisa Oliveira dos Lima, Isabela Pereira de Rodrigues, Cínthia Souza Alves, Natália Botega Bruzi, Adriano Teodoro Reis, Moizés de Souza Botelho, Flávia Barbosa Silva |
author_role |
author |
author2 |
Mendes, Marcela Pedroso Santos, Heloisa Oliveira dos Lima, Isabela Pereira de Rodrigues, Cínthia Souza Alves, Natália Botega Bruzi, Adriano Teodoro Reis, Moizés de Souza Botelho, Flávia Barbosa Silva |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Pierobon, Felipe Mendes, Marcela Pedroso Santos, Heloisa Oliveira dos Lima, Isabela Pereira de Rodrigues, Cínthia Souza Alves, Natália Botega Bruzi, Adriano Teodoro Reis, Moizés de Souza Botelho, Flávia Barbosa Silva |
dc.subject.por.fl_str_mv |
Oriza sativa Water stress Grain quality Plant breeding |
topic |
Oriza sativa Water stress Grain quality Plant breeding |
description |
Among physiological disorders, chalkiness is one of the main problems in rice breeding since it directly affects grain quality and rice price in the market. Chalkiness can occur due both genotypic and environmental effects, including malformed grains, moisture content, pest attack, and water stress. Therefore, the study of mechanisms influencing the expression of chalkiness can greatly help breeders to deal with this problem. The objective of this study was to access the influence of water supply on the occurrence of chalkiness in rice grains of twenty elite inbred lines from the Upland Rice Breeding Program from the Brazilian public research institutions UFLA, EMBRAPA and EPAMIG. Lines were evaluated for grain chalkiness in two irrigated environments and in a non-irrigated one. The experiments were carried out in the 2013/2014 growing season following a randomized block design with three replications. The proportion of chalkiness was accounted of the number of chalky grains of a random sample of 100 grains taken from 10 random panicles of each plot. Genotype x environment interaction was significant in the combined analysis of variance of all environments, so progenies performance varied across environments. Lines showed variability for chalkiness on the non-irrigated environment and on the mean of all environments, but they did not differed on the irrigated environments separately, indicating that the expression of chalkiness in this study occurred mostly due to the environment rather than to genotypes. Lines evaluated in the non-irrigated environment showed a significant large proportion of chalky grains compared to the proportion found in the irrigated environments, suggesting that water supply influenced the expression of grain chalkiness. Lines CMG 1987 and CMG 1698 showed significant tolerance of chalkiness in the non-irrigated condition. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-02 2018-05-18T16:21:48Z 2018-05-18T16:21:48Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
PIEROBON, F. et al. Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigation. International Journal of Current Research, [S.l.], v. 8, n. 2, p. 26480-26483, Feb. 2016. http://repositorio.ufla.br/jspui/handle/1/29274 |
identifier_str_mv |
PIEROBON, F. et al. Occurrence of grain chalkiness in upland rice genotypes grown with and without irrigation. International Journal of Current Research, [S.l.], v. 8, n. 2, p. 26480-26483, Feb. 2016. |
url |
http://repositorio.ufla.br/jspui/handle/1/29274 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
International Journal of Current Research reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1784550069369831424 |