Correlations and path analysis for yield components in irrigated rice

Anibele Streck, Eduardo; Almeida Aguiar, Gabriel; Karling Facchinello, Paulo Henrique; Perin, Lais; Kuhn Krüger, Tuise; Martins de Magalhães Júnior, Ariano

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dc.creator	Anibele Streck, Eduardo
dc.creator	Almeida Aguiar, Gabriel
dc.creator	Karling Facchinello, Paulo Henrique
dc.creator	Perin, Lais
dc.creator	Kuhn Krüger, Tuise
dc.creator	Martins de Magalhães Júnior, Ariano
dc.date	2018-08-01
dc.date.accessioned	2022-03-21T20:08:08Z
dc.date.available	2022-03-21T20:08:08Z
dc.identifier	https://comunicatascientiae.com.br/comunicata/article/view/2017
dc.identifier	10.14295/cs.v9i2.2017
dc.identifier.uri	http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/77879
dc.description	Grain yield of irrigated rice is a complex character resulting from the expression and association of different components, which should be considered by the breeder for an efficient process of selection of new genotypes. In this sense, the objective is to highlight the phenotypic correlations and the direct and indirect associations of the main components related to crop yield via path analysis. The experiment was carried out in an experimental field of the Lowlands Station of Embrapa Clima Temperado using six genotypes of irrigated rice: the cultivars BRS Pampa, BRS IRGA 409, BRS 7 ‘Taim’, BRS Sinuelo CL, BRS Pampeira and AB 10101 CL. The agronomic characters evaluated were grain yield, days to flowering, panicle length, panicle mass, number of fertile spikelets, number of sterile spikelets, number of tillers per plant, number of panicles per square meter, and mass of one thousand grains. The number of fertile spikelets, number of panicles per square meter, panicle mass and mass of one thousand grains influenced grain yield, both through phenotypic correlation and direct effects. In addition, there was a high direct linear tendency of these variables towards yield. Panicle length and number of sterile spikelets showed a potential of use in the indirect selection for grain yield.	en-US
dc.description	Grain yield of irrigated rice is a complex character resulting from the expression and association of different components, which should be considered by the breeder for an efficient process of selection of new genotypes. In this sense, the objective is to highlight the phenotypic correlations and the direct and indirect associations of the main components related to crop yield via path analysis. The experiment was carried out in an experimental field of the Lowlands Station of Embrapa Clima Temperado using six genotypes of irrigated rice: the cultivars BRS Pampa, BRS IRGA 409, BRS 7 ‘Taim’, BRS Sinuelo CL, BRS Pampeira and AB 10101 CL. The agronomic characters evaluated were grain yield, days to flowering, panicle length, panicle mass, number of fertile spikelets, number of sterile spikelets, number of tillers per plant, number of panicles per square meter, and mass of one thousand grains. The number of fertile spikelets, number of panicles per square meter, panicle mass and mass of one thousand grains influenced grain yield, both through phenotypic correlation and direct effects. In addition, there was a high direct linear tendency of these variables towards yield. Panicle length and number of sterile spikelets showed a potential of use in the indirect selection for grain yield.	pt-BR
dc.format	application/pdf
dc.format	image/jpeg
dc.language	eng
dc.language	por
dc.publisher	Federal University of Piauí	en-US
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/2017/543
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/2017/724
dc.rights	Copyright (c) 2018 Eduardo Anibele Streck, Gabriel Almeida Aguiar, Paulo Henrique Karling Facchinello, Lais Perin, Tuise Kuhn Krüger, Ariano Martins de Magalhães Júnior	en-US
dc.source	Comunicata Scientiae; Vol. 9 No. 2 (2018); 154-161	en-US
dc.source	Comunicata Scientiae; v. 9 n. 2 (2018); 154-161	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.subject	agronomic characters	en-US
dc.subject	plant breeding	en-US
dc.subject	Oryza sativa	en-US
dc.subject	direct selection	en-US
dc.subject	indirect selection	en-US
dc.subject	agronomic characters	pt-BR
dc.subject	plant breeding	pt-BR
dc.subject	Oryza sativa	pt-BR
dc.subject	direct selection	pt-BR
dc.subject	indirect selection	pt-BR
dc.title	Correlations and path analysis for yield components in irrigated rice	en-US
dc.title	Correlations and path analysis for yield components in irrigated rice	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	Artigo Científico	pt-BR