Puccinia Graminis F
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Molecular characterization of Indian pathotypes of Puccinia striiformis f. sp. tritici and multigene phylogenetic analysis to establish inter- and intraspecific relationships
Abstract Stripe rust caused by Puccinia striiformis f. sp. tritici (Pst) is one of the most devastating diseases of wheat (Triticum spp.) worldwide. Indian isolates were characterised based on their phenotypic reaction on differential hosts carrying different Yr genes. Based on virulence/avirulence structure, isolates were characterised into ten different pa
Genet. Mol. Biol.. Publicado em: 21/09/2018
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2. . Fosfitos, acibenzolar-S-methyl e fungicidas no controle de patógenos biotróficos do trigo
RESUMO Danos na cultura do trigo estão associados a ferrugem da folha (Puccinia triticina) e ao oídio (Blumeria graminis f. sp. tritici). O presente trabalho objetivou avaliar o efeito de fosfito de potássio e acibenzolar-S-metil isolados e/ou associados ao fungicida epoxiconazole + piraclostrobina no controle do oídio e da ferrugem da folha e no rendime
Summa phytopathol.. Publicado em: 2018-06
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3. Avaliação de Fungicidas no Controle das Ferrugens do Trigo.
O controle das ferrugens da folha (Puccinia recondita f. sp. tritici) e do colmo (P. graminis f. sp. Iriticí) no trigo (Trificun aestivun L.) foi avaliada em condições de campo, em 1989, para a cultivar IAPAR 6-Tapejara. Oito fungicidas triazóis; foram usados, isolados ou em nústura com mancozeb, prochioraz, prochloraz + fempropernorfo, iminoctadine, ma
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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4. Desempenho agronomico e caracteristicas da cultivar de trigo BRS 49 no Estado do Parana.
A cultivar de trigo BRS 49, desenvolvida pela Embrapa Trigo, foi indicada para semeadura no Estado do Parana, a partir de 1999. Para a determinacao do seu valor de cultivo e uso, foram utilizados dados de 54 experimentos, instalados em nove locais das regioes 6, 7 e 8 do Parana, no periodo de 1996 a 1998. Apresenta como principais caracteristicas: ciclo inte
Londrina: Embrapa Soja. Publicado em: 2011
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5. Efeito de fosfito no controle de doenças foliares de trigo in vitro e in sito
O desenvolvimento e o rendimento de grãos da cultura do trigo são influenciados por diversos fatores, entre os quais se encontram a interferência causada por patógenos presentes nas lavouras. Atualmente, a principal ferramenta de controle destes patógenos nas lavouras é o uso de constantes aplicações de fungicidas. Contudo, essa prática vem ocasiona
Publicado em: 2008
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6. Efeito do tratamento de sementes com fungicida sobre o controle de doenças na parte aérea do trigo
O controle das doenças foliares do trigo (Triticum aestivum) através do tratamento de sementes foi avaliado em Passo Fundo, RS em 1999. A cultivar usada no experimento foi OR 1, conhecida por sua suscetibilidade ao oídio e à ferrugem da folha. Todos os fungicidas diferiram (p > 0,05) da testemunha, não tratada em rendimento de grãos (REND) e peso do he
Fitopatologia Brasileira. Publicado em: 2003-10
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7. Mutation to Wider Virulence in Puccinia graminis f. sp. tritici: Evidence for the Existence of Loci Which Allow the Fungus To Overcome Several Host Stem Rust Resistance Genes Simultaneously †
Mutants of Puccinia graminis f. sp. tritici were obtained which were able to overcome simultaneously several host stem rust resistance (Sr) genes effective against the wild-type culture. These results suggest that, in addition to those Psr loci which relate specifically to host Sr genes in a “gene for gene” manner, one or more general loci may be present
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8. Some Characteristics of a Lipase Preparation from the Uredospores of Puccinia graminis tritici1
The characteristics of a lipase preparation from the uredospores of Puccinia graminis (pers.) f. sp. tritici (Eriks. and Henn.) have been investigated. The majority of the lipolytic activity in disrupted uredospores was found to be associated with a lipid-containing, particulate fraction which sedimented at 5000g. With triolein as a substrate, both 1,3- and
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9. The Nature of Cold-induced Dormancy in Urediospores of Puccinia graminis tritici
When air-dry urediospores of the wheat stem rust, Puccinia graminis f. sp. tritici, are exposed to temperatures below freezing, their germinability is markedly reduced, even after prolonged thawing at room temperature. Germinability is fully restored by a brief heat-shock or by vapor phase hydration. We have found that this “cold dormancy” cannot be reve
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10. Photocontrol of Fungal Spore Germination 1
Germination of Puccinia graminis f. sp. tritici uredospores is inhibited by continuous irradiation. Prehydration of spores enhances both dark germination and photoinhibition. Simultaneous irradiation with ineffective red (653 nanometers) and inhibitory far red light (720 nanometers) results in partial nullification of the inhibition brought about by far red
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11. Molecular Mapping of Wheat: Major Genes and Rearrangements in Homoeologous Groups 4, 5, and 7
A molecular-marker linkage map of hexaploid wheat (Triticum aestivum L. em. Thell) provides a framework for integration with the classical genetic map and a record of the chromosomal rearrangements involved in the evolution of this crop species. We have constructed restriction fragment length polymorphism (RFLP) maps of the A-, B-, and D-genome chromosomes o
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12. Differential Induction of Lipoxygenase Isoforms in Wheat upon Treatment with Rust Fungus Elicitor, Chitin Oligosaccharides, Chitosan, and Methyl Jasmonate.
A glycopeptide elicitor prepared from germ tubes of the rust fungus Puccinia graminis Pers. f. sp. tritici Erikss. & Henn (Pgt), as well as chitin oligosaccharides, chitosan, and methyl jasmonate (MJ) stimulated lipoxygenase (LOX) activity (E.C. 1.13.11.12) in wheat (Triticum aestivum) leaves. Immunoblot analysis using anti-LOX antibodies revealed the induct