13 documents found, page 1 of 2
Physiological, biochemical and microscopic aspects of the rice-Bipolaris oryzae...
Debona, DanielAs estrobilurinas estão entre os principais fungicidas usados no controle de doenças ao redor do mundo. Em adição ao seu efeito fungicida, elas também podem afetar aspectos fisiológicos e bioquímicos de plantas tratadas. No entanto, as alterações fisiológicas, bioquímicas e microscópicas decorrentes da aplicação de azoxistrobina (Az), a principal estrobilurina do mercado, na cultura do arroz permanecem elusivas...
Avaliação da ativação de defesa em soja contra Phakopsora pachyrhizi em condiçõ...
Debona, Daniel; Meneghetti, Rosana Ceolin; Balardin, Ricardo Silveiro; Corte, Gerson Dalla; Favera, Diego DallaA efetividade da ativação de defesa em diferentes cultivares de soja contra Phakopsora pachyrhizi proporcionada pelo fosfito, bem como sua associação com fungicidas aplicados em diferentes épocas em relação à inoculação com o patógeno, foi estudada em condições de casa-de-vegetação em dois ensaios conduzidos no delineamento inteiramente casualizado, com quatro repetições. Os resultados obtidos indicaram que o f...
Microscopic aspects of the colonization of Pyricularia oryzae on the rachis of ...
Cruz, Maria Fernanda Antunes da; Silva, Larisse Arantes Freitas; Rios, Jonas Alberto; Debona, Daniel; Rodrigues, Fabrício ÁvilaConsidering the importance of blast, caused by Pyricularia oryzae, to reduce wheat yield, this study investigate how silicon (Si) could reduce the wheat blast symptoms in the rachis tissues using light microscopy and scanning electron microscopy. Wheat plants (cv. BR 18) were grown in hydroponic culture with either 0 (–Si) or 2 mM (+Si) of Si. Blast symptoms were very well developed on the spikes of the –Si pla...
Defence‐related enzymes in soybean resistance to target spot
Rodrigues, Fabrício A.; Fortunato, Alessandro A.; Debona, Daniel; Bernardeli, Arthur M. A.Target spot, caused by the fungus Corynespora cassiicola, has become a serious foliar disease in soybean production in the Brazilian Cerrado. Information in the literature regarding the biochemical defence responses of soybean to C. cassiicola infection is rare. Therefore, the objective of this study was to determine the biochemical features associated with soybean resistance to target spot. The activities of c...
Induction of resistance to Pyricularia oryzae in wheat by acibenzolar-S-methyl,...
Rios, Jonas Alberto; Rodrigues, Fabrício Ávila; Debona, Daniel; Resende, Renata Sousa; Moreira, Wiler Ribas; Andrade, Camila Cristina LageThis study investigated the effects of acibenzolar-S-methyl (ASM), ethylene (ET) and jasmonic acid (JA) on the resistance of two wheat cultivars (BRS-229 and BR-18) to infection by Pyricularia oryzae. The treatments included spraying plants with ASM (300 mg L-1), ET (0.5 mM), JA (0.1 mM) and distilled water (control) 48 h before inoculation with P. oryzae. Malondialdehyde concentration, an indicative of oxidati...
Changes in leaf gas exchange and chlorophyll a fluorescence on soybean plants s...
Nascimento, Kelly Juliane Telles; Debona, Daniel; Rezende, Danielle; DaMatta, Fábio Murilo; Rodrigues, Fabrício ÁvilaFrogeye spot, caused by Cercospora sojina, is one of the major diseases causing yield losses in soybean. Considering the potential of silicon (Si) to attenuate the physiological impairments imposed by pathogens infection, this study investigated its effect on leaf gas exchange and chlorophyll (Chl) a fluorescence parameters as well as on the concentrations of photosynthetic pigments and carbohydrate pools on so...
Tratamento de sementes com fungicidas e inseticidas como redutores dos efeitos ...
Debona, Daniel; Balardin, Ricardo Silveiro; Silva, Felipe Dalla Lana da; Corte, Gerson Dalla; Favera, Diego Dalla; Tormen, Nédio RodrigoO objetivo do trabalho foi avaliar o efeito de quatro tratamentos de sementes: água (T1), carbendazim + thiram (T2), fipronil + tiofanato metílico + piraclostrobina (T3) e abamectina + thiamethoxam + fludioxonil + mefenoxan + thiabendazole (T4) sobre parâmetros de crescimento de plantas de soja submetidas a dois regimes hídricos (presença e ausência de estresse hídrico) estabelecidos logo após a emergência das ...
Chlorophyll a fluorescence imaging of soya bean leaflets infected by Corynespor...
Fortunato, Alessandro A.; Debona, Daniel; Aucique‐Pérez, Carlos E.; Corrêa, Emerson Fialho; Rodrigues, Fabrício A.Considering the importance of target spot, caused by Corynespora cassiicola, to impact soya bean yield, this study investigated the C. cassiicola‐induced perturbations in the photosynthesis of soya bean plants from cultivars Fundacep 59 (moderately resistant) and TMG 132 (susceptible) by examining the chlorophyll (Chl) a fluorescence parameters and imaging and the photosynthetic pigment pools. The area under di...
A set of standard area diagrams to assess severity of frogeye leaf spot on soybean
Debona, Daniel; Nascimento, Kelly Juliane Telles; Rezende, Danielle; Rios, Jonas Alberto; Bernardeli, Arthur Martins Almeida; Silva, Leandro CastroA set of standard area diagrams (SADs) was developed and validated to aid visual assessment of severity of frogeye leaf spot (FLS) caused by Cercospora sojina. The SAD has eight color images of diseased leaflets with severity values that ranged from 0.1 to 39.9 %. The SAD was validated by a group of 20 raters [10 experienced (ER) and 10 inexperienced (IR)], who assessed the same set of 50 images twice, the firs...
Resistência genética de plantas a patógenos
Monteiro, Ana Leticia; Danelli, Anderson; Pereira, Arione; Castro, Caroline; Debona, Daniel; Dianese, Érico; Rodrigues, Fabrício; Ferraz, HélvioSubmitted by Editora UFPel (jlourique@pq.cnpq.br) on 2018-11-20T17:39:40Z No. of bitstreams: 1 RESISTÊNCIA GENÉTICA DE PLANTAS A PATÓGENOS_EBOOK.pdf: 7562843 bytes, checksum: 6cc65631cd221f469a57bc2b7babb6d9 (MD5); Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2018-11-23T18:27:30Z (GMT) No. of bitstreams: 1 RESISTÊNCIA GENÉTICA DE PLANTAS A PATÓGENOS_EBOOK.pdf: 7562843 bytes, che...