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	Provedor de dados 86 (2) 106 (1) Autor Acharaporn Na Lampang Noenplab (1) Anjos,Liamar Maria dos (1) Chanasirin Klinmanee (1) Dias Neto,Justino José (1) Ferreira,Marcio Elias (1) Filippi,Marta Cristina (1) Kulchana Ketsuwan (1) Payorm Cobelli (1) Poonsak Mekwatanakarn (1) Prabhu,Anne Sitarama (1) Rangel,Paulo Hideo Nakano (1) Sanguan Teang Deerith (1) Santos,Gil Rodrigues dos (1) Thanomjit Rithmontree (1) Mais... Palavra-chave Pathotype (3) Pathogenicity (2) Blast disease (1) Diversity (1) Magnaporthe grisea (1) Near isogenic lines (1) Oryza sativa (1) Physiologic races (1) Pyricularia (1) Race (1) Rice (1) ข้าว (1) ความหลากหลายของเชื้อ (1) ยีนต้านทานเดี่ยว (1) สายพันธุ์เชื้อ (1) เชื้อรา (1) เชื้อสาเหตุ (1) โรคไหม้ (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Collection (1) Ano 2010 (1) 2007 (1) 2001 (1) País Brazil (2) Thailand (1) Idioma Inglês (2) Thailandês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Phenotypic virulence analysis of Pyricularia grisea isolates from Brazilian upland rice cultivars 86 Filippi,Marta Cristina; Prabhu,Anne Sitarama. Phenotypic virulence analysis was made on population of Pyricularia grisea isolates collected from 10 upland cultivars in three distinct rice breeding sites, with the objective of studying the degree of similarity in the phenotypic virulence among the isolates, the composition of races, and their virulence pattern. Sixteen races were identified based on the reaction type on eight standard international differentials, the predominant ones being IB9 and IB41. The virulence frequency was high on IAC47 and IAC165 among medium and early maturing cultivars, respectively. The frequency of isolates virulent was greater on upland rice cultivars (51.1%) than on irrigated rice cultivars (21.8%). Both virulent and avirulent isolates were present in the population of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pathotype; Oryza sativa; Magnaporthe grisea; Physiologic races; Pathogenicity. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2001000100004 Hot spots for diversity of Magnaporthe oryzae physiological races in irrigated rice fields in Brazil 86 Dias Neto,Justino José; Santos,Gil Rodrigues dos; Anjos,Liamar Maria dos; Rangel,Paulo Hideo Nakano; Ferreira,Marcio Elias. The objective of this work was to evaluate the Magnaporthe oryzae pathotype diversity in new commercial irrigated rice fields in the Araguaia River Valley, state of Tocantins, Brazil. The causal agent of rice blast has heavily affected rice production in the region. Despite the efforts of breeding programs, blast resistance breakdown has been recorded shortly after the release of new resistant cultivars developed for the region. Among the causes of resistance breakage is the capacity of the fungus to rapidly develop new pathotypes. A sample of 479 M. oryzae monosporic isolates was obtained and tested using the international rice blast differential set. Isolate collections were made in small areas designed as trap nurseries and in scattered sites in their... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pyricularia; Pathogenicity; Pathotype; Race. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000300004 การตรวจสอบความหลากหลายของสายพันธุ์เชื้อราสาเหตุโรคไหม้ของข้าวในประเทศไทย 106 Poonsak Mekwatanakarn; Payorm Cobelli; Acharaporn Na Lampang Noenplab; Thanomjit Rithmontree; Kulchana Ketsuwan; Chanasirin Klinmanee; Sanguan Teang Deerith. Rice blast disease is the major disease in rainfed lowland area of Thailand. The causal fungus of this disease is Pyricularia grisea Sacc. Variation of this fungus was higher than other rice pathogens. This report used near isogenic lines (NILs) to detect the variation, pathothype and virulence spectrum of the fungus in Thailand during 2002 - 2005. Trap blast nurseries consisted of 9 Thai local cultivars and 18 NILs were conducted at Ubon Ratchathani Rice Research Center, Khon Kaen Rice Research Center, Phrae Rice Research Center, Phitsanulok Rice Research Center, and Phatthalung Rice Research Center. Single conidia was isolated from infected rice leaves. Virulence spectrum of blast populations were screened on 18 NILs. Two thousand four hundred seventy... Tipo: Collection Palavras-chave: Rice; Blast disease; Pathotype; Near isogenic lines; Diversity; ข้าว; โรคไหม้; เชื้อสาเหตุ; สายพันธุ์เชื้อ; ยีนต้านทานเดี่ยว; ความหลากหลายของเชื้อ; เชื้อรา. Ano: 2007 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5300 Registros recuperados: 3 Primeira ... 1 ... Última

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