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Rice Resistance to Brown Spot Mediated by Nitrogen and Potassium

2009; Wiley; Volume: 158; Issue: 3 Linguagem: Inglês

10.1111/j.1439-0434.2009.01593.x

1439-0434

Maristela Pereira Carvalho, Fabrício Ávila Rodrigues, Patrícia Ricardino Silveira, Camila Cristina Lage de Andrade, Júlio Cezar Parpaiola Baroni, Henrique Sá Paye, José Eustáquio Loureiro,

Plant Pathogens and Resistance

Journal of PhytopathologyVolume 158, Issue 3 p. 160-166 Rice Resistance to Brown Spot Mediated by Nitrogen and Potassium Maristela Pereira Carvalho, Maristela Pereira Carvalho Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this authorFabricio Avila Rodrigues, Fabricio Avila Rodrigues Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this authorPatricia Ricardino Silveira, Patricia Ricardino Silveira Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this authorCamila Cristina Lage Andrade, Camila Cristina Lage Andrade Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this authorJulio Cezar Parpaiola Baroni, Julio Cezar Parpaiola Baroni Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this authorHenrique Sá Paye, Henrique Sá Paye Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this authorJosé Eustáquio Loureiro Junior, José Eustáquio Loureiro Junior Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this author Maristela Pereira Carvalho, Maristela Pereira Carvalho Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this authorFabricio Avila Rodrigues, Fabricio Avila Rodrigues Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this authorPatricia Ricardino Silveira, Patricia Ricardino Silveira Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this authorCamila Cristina Lage Andrade, Camila Cristina Lage Andrade Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this authorJulio Cezar Parpaiola Baroni, Julio Cezar Parpaiola Baroni Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this authorHenrique Sá Paye, Henrique Sá Paye Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this authorJosé Eustáquio Loureiro Junior, José Eustáquio Loureiro Junior Authors' address: Department of Plant Pathology, Laboratory of Host-Parasite Interaction, Viçosa Federal University, Viçosa, 36570-000, Minas Gerais State, Brazil (correspondence to F. A. Rodrigues. E-mail: [email protected])Search for more papers by this author First published: 01 February 2010 https://doi.org/10.1111/j.1439-0434.2009.01593.xCitations: 9 Viçosa Federal University, Viçosa, Minas Gerais State, Brazil Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract This study was undertaken to investigate the effects of both nitrogen (N) and potassium (K) rates on rice resistance to brown spot, caused by the fungus Bipolaris oryzae. Rice plants (cultivar 'Metica 1') were grown in soil corrected with 0, 25, 50, 75 and 100 mg of N / kg (as NH4NO3) of soil as well as with 25, 50, 75, 125 and 150 mg of K / kg (as KCl) of soil. Thirty-three-day-old plants were inoculated with a suspension of Bipolaris oryzae conidia and the incubation period (IP), number of lesions (NL) per cm2 of leaf area and disease severity was evaluated. Disease severity was scored at 24, 48, 72, 96, 120 and 144 h after inoculation and data were used to obtain the area under brown spot progress curve (AUBSPC). Soil plant analysis development (SPAD) index, plant dry weight and concentration of N and K in leaf tissues were also determined for both non-inoculated (NI) and inoculated (IN) plants. Concentration of N in leaf tissue increased as the N rates in the soil increased. Concentration of K in leaf tissue increased sharply as the K rates in the soil increased for both NI and IN plants. 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