Results 31 to 40 of about 3,007 (152)

Regional Population Diversity of Pyricularia grisea in Arkansas and the Influence of Host Selection [PDF]

Plant Disease, 2000
MGR586 DNA fingerprinting has been widely used to characterize population diversity of the rice blast pathogen, Pyricularia grisea. However, the frequency and distribution of particular haplotypes (individuals) within MGR-delimited lineages has not been examined in the United States.
J Q, Xia, J C, Correll, F N, Lee, W J, Ross, D D, Rhoads   +4 more
openaire   +2 more sources

Gain of Virulence Caused by Insertion of a Pot3 Transposon in a Magnaporthe grisea Avirulence Gene

Molecular Plant-Microbe Interactions, 2001
The avirulence gene AVR-Pita in Magnaporthe grisea prevents the fungus from infecting rice cultivars carrying the disease resistance gene Pi-ta. Insertion of Pot3 transposon into the promoter of AVR-Pita caused the gain of virulence toward Yashiro-mochi,
Seogchan Kang, Marc Henri Lebrun, Leonard Farrall, Barbara Valent   +3 more
doaj   +1 more source

Identificação de fisiológicas de Pyriculariagrisea em arroz no estado de Minas Gerais Identification of physiological races of Pyricularia grisea in rice in the State of Minas Gerais

Ciência e Agrotecnologia, 2003
Com o objetivo de identificar as raças fisiológicas de Pyricularia grisea que ocorrem em Minas Gerais, coletaram-se 23 amostras de folhas de arroz com sintomas da brusone em 15 municípios representativos do estado.
Vanda Maria de O. Cornélio, Antônio Alves Soares, Júlio Sílvio de Sousa Bueno Filho, Plínio César Soares   +3 more
doaj   +1 more source

Inibição do desenvolvimento de fungos fitopatogênicos por detergente derivado de óleo da mamona (Ricinus communis) The castor oil plant detergent (Ricinus communis) inhibits the asexual development of phytopathogenic fungi

Ciência Rural, 2007
No presente estudo avaliou-se o efeito fungitóxico do detergente derivado do óleo da mamona (Ricinus communis) sobre o desenvolvimento dos fitopatógenos: Pyricularia grisea, Fusarium graminearum e Colletotrichum lindemuthianum.
Eunice Hitomi Takano, Cleverson Busso, Evelyn Almeida Lucas Gonçalves, Gilberto Orivaldo Chierice, Sérgio Augusto Catanzaro-Guimarães, Marialba Avezum Alves de Castro-Prado   +5 more
doaj   +1 more source

Genetic diversity and virulence pattern in field populations of Pyricularia grisea from rice cultivar Metica-1 [PDF]

Pesquisa Agropecuária Brasileira, 2002
Rice blast is a major yield constraint of the irrigated rice in the State of Tocantins, Brazil. The objective of this investigation was to study the phenotypic and genetic diversity within the pathogen population of Pyricularia grisea in samples ...
Marta Cristina Filippi, Anne Sitarama Prabhu, Leila Garcês de Araújo, Josias Correa de Faria   +3 more
doaj   +1 more source

Development of blast resistant somaclones of the upland rice cultivar araguaia [PDF]

Pesquisa Agropecuária Brasileira, 2000
The degree of blast resistance of upland rice (Oryza sativa L.) cultivar Araguaia has decreased over time causing significant yield losses. The major objective of this study was to obtain blast (Pyricularia grisea) resistant somaclones, adapting ...
LEILA GARCÊS DE ARAÚJO, ANNE SITARAMA PRABHU, ADELSON DE BARROS FREIRE   +2 more
doaj   +1 more source

Relationship between potassium fertilization and panicle blast severity in upland rice Relação entre adubação potássica e severidade de brusone nas panículas em arroz de sequeiro

Pesquisa Agropecuária Brasileira, 1999
The influence of K2O (0, 40, 80, 120 kg ha-1) at varying rates of N application (0, 30, 60 kg ha-1) at planting, on panicle blast (Pyricularia grisea (Cooke) Sacc.) was studied in a field experiment conducted during three consecutive years with the ...
Anne Sitarama Prabhu, Morel Pereira Barbosa Filho, Marta Cristina Filippi, Francisco José Pfeilsticker Zimmermann   +3 more
doaj   +1 more source

IDENTIFICATION OF NON-PATHOGENIC FUNGI OF RICE AND THE EVALUATION OF THEIR EFFECT ON BIOLOGICAL CONTROL OF Pyricularia grisea, THE CAUSAL AGENT OF RICE BLAST DISEASE in vitro

Acta Scientiarum Polonorum: Hortorum Cultus, 2016
Rice blast disease, caused by Pyricularia grisea, is an important rice disease in Iran and throughout the world. Out of 150 infected samples collected from paddy fields of Guilan province, 57 fungal isolates were isolated for which PDA and W.A media ...
Mohammad Reza Safari Motlagh, Pooneh Usefipoor   +1 more
doaj  

Perspectivas del uso de bacterias rizosféricas en el control de Pyricularia grisea (Cooke Sacc.) en el cultivo del arroz (Oryza sativa L.)

Revista Colombiana de Biotecnología, 2011
Prospect of the use of bacteria in the control Pyricularia grisea (Cooke Sacc.) on rice (Oriza sativa L.)   Título corto: Bacterias rizosféricas para controlar la piriculariosis   Resumen El arroz es fuente de alimento para una gran parte de la población
Yanelis Acebo Guerrero, Annia Hernández-Rodríguez, Narovis Rives Rodríguez, Ana Niurka Hernández-Lauzardo   +3 more
doaj  

Pengaruh Waktu Terhadap Intensitas Penyakit Blast Dan Keberadaan Spora Pyricularia Grisea (Cooke) Sacc.Pada Lahan Padi Sawah (Oryzae sativa) Di Kecamatan Samarinda Utara

Ziraa'ah: Majalah Ilmiah Pertanian, 2015
The objective of this study was to observe the effect of duration of infection on the blast intensity and the presence of Pyricularia grisea (Cooke) Sacc. spores on lowland rice (Oryzae sativa). The experiment was conducted in North Samarinda and also in
Ni'matuljannah Akhsan, Pratiwi Jati Palupi   +1 more
doaj   +1 more source