Rice Brown Spot
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Componentes bioquímicos e epidemiológicos associados à resistência do arroz à mancha parda
RESUMO A mancha parda (Bipolaris oryzae) é uma das mais importantes doenças foliares do arroz. Nesse estudo, alguns componentes de resistência e algumas variáveis bioquímicas amplamente conhecidas como mecanismos de defesa de plantas contra patógenos foram avaliadas em genótipos de arroz classificados, segundo SOSBAI, como moderadamente suscetível, m
Summa phytopathol.. Publicado em: 2019-03
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2. Silicon, acibenzolar-S-methyl and potassium phosphite in the control of brown spot in rice
ABSTRACT This study investigated the effects of silicon (Si), acibenzolar-S-methyl (ASM), and potassium phosphite (Phi) on the potentiation of rice resistance to infection by Bipolaris oryzae. The treatments included the soil amended with Si (1.25 g of calcium silicate per kg of soil), spraying of plants with ASM (500 mg∙L–1), Phi (5 mL∙L–1), and dis
Bragantia. Publicado em: 26/02/2016
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3. Magnesium-induced alterations in the photosynthetic performance and resistance of rice plants infected with Bipolaris oryzae
Brown spot (BS), caused by the fungus Bipolaris oryzae, is one of the most important diseases contracted by rice. We investigated the effect of magnesium (Mg) on the development of BS, caused by Bipolaris oryzae, and the effects of disease development on the photosynthetic performance of rice (Oryza sativa L.) plants (cv. Metica-1) grown in nutrient solution
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-08
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4. Rice grain resistance to brown spot and yield are increased by silicon
Brown spot, caused by Bipolaris oryzae, is one of the most important diseases of rice and can cause a reduction in yield and grain quality. The effect of silicon (Si) on the resistance of rice grains to brown spot was investigated. Plants from cv. Oochikara and its mutant, defective in the Lsi1 transporter (lsi1 mutant), were grown in hydroponic culture eith
Trop. plant pathol.. Publicado em: 31/01/2014
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5. Silicon improves the emergence and sanity of rice seedlings obtained from seeds infected with Bipolaris oryzae
This study investigated the importance of silicon (Si) in rice grain husk in association with fungicide treatment for preventing Bipolaris oryzae transmission from seed to seedling and the improvement in seedling emergence. Plants from cv. Oochikara and its mutant (lsi1 mutant) defective in active Si uptake were grown in nutrient solution without (-Si) or wi
Trop. plant pathol.. Publicado em: 2013-12
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6. Silicon reduces brown spot severity and grain discoloration on several rice genotypes
This study aimed to investigate the effect of silicon (Si) on the reduction of brown spot severity (BSS), caused by Bipolaris oryzae, and grain discoloration in several rice genotypes. An experiment was conducted in a greenhouse where eight genotypes were evaluated for their response to Si rates and decrease on BSS. The relationship between Si rates and BSS
Trop. plant pathol.. Publicado em: 2012-12
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7. Biological control of rice brown spot with native isolates of three Trichoderma species
Brown spot caused by Bipolaris oryzae is an important rice disease in Southern coast of Caspian Sea, the major rice growing region in Iran. A total of 45 Trichoderma isolates were obtained from rice paddy fields in Golestan and Mazandaran provinces which belonged to Trichoderma harzianum, T. virens and T. atroviride species. Initially, they were screened aga
Brazilian Journal of Microbiology. Publicado em: 2012-03
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8. Genetic variability for disease resistance in Brazilian upland rice native germplasm.
Thirty nine rice genotypes were evaluated under dryland field conditions for resistance to leaf and neck blast, brown spot, leaf scald, narrow brown leaf spot and grain discolaration in 13 test sites during a three-year period. these include 17 land races, six traditional cultivars, 11 improved breeding lines and three exotic cultivars. There was a great div
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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9. Genetic variability for disease resistance in Brazilian upland rice native germplasm.
Thirty nine rice genotypes were evaluated under dryland field conditions for resistance to leaf and neck blast, brown spot, leaf scald, narrow brown leaf spot and grain discolaration in 13 test sites during a three-year period. these include 17 land races, six traditional cultivars, 11 improved breeding lines and three exotic cultivars. There was a great div
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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10. Active silicon uptake and rice brown spot: resistance components and physiological and biochemical aspects of the plant-pathogen interaction / Absorção ativa do silício e a mancha parda do arroz: componentes de resistência e aspectos fisiológicos e bioquímicos da interação planta-patógeno
Dentre as plantas até então estudadas, o arroz (Oryza sativa L.) é a com a maior capacidade de acumular silício (Si). Entre os benefícios atribuídos a esse elemento está o controle de doenças. Neste estudo, objetivou-se avaliar a importância da absorção ativa de Si pelas plantas de arroz no controle da mancha parda (Bipolaris oryzae). Para isso fo
Publicado em: 2008
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11. Rice resistance to the brown spot mediated by silicon and manganese / Resistência do arroz à mancha-parda mediada por silício e manganês
As doenças das plantas são responsáveis pela redução significativa da produção de alimentos no mundo. Para o seu controle, cada vez mais são utilizados defensivos agrícolas que podem causar problemas ambientais, econômicos e sociais, havendo a necessidade de se buscar alternativas de controle menos agressivas ao socioecossistema. A nutrição adequ
Publicado em: 2007