Leaf Scald
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Selection of conilon coffee clones tolerant to pests and diseases in Minas Gerais
Abstract In the northern Minas region, the dry-warm climate predisposes coffee plants to the occurrence of leaf miners, mites, cercosporiosis, and leaf scald. Aiming for the development of a cultivar adapted to these conditions, Coffea canephora Pierre ex A. Froehner clones were selected through genetic parameters under an irrigated system, without agrochemi
Crop Breed. Appl. Biotechnol.. Publicado em: 31/10/2019
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2. SCS 438 Zafira - a new plum cultivar resistant to leaf scald (Xylella fastidiosa)
Abstract ‘SCS438 Zafira’ is a novel plum cultivar, adapted to southern Brazil. It produces high-quality fruits, very similar to ‘Fortune’, the standard mid-season cultivar. Its main advantage is the resistance to leaf scald. Apparently, the mechanism of resistance blocks the transmission of the bacteria by natural insect vectors (sharpshooters).
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-04
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3. Otimização da detecção de raquitismo da soqueira e escaldadura das folhas em cana-de-açúcar utilizando PCR / Optimization of detection of Ratoon Stunting Disease and Leaf Scald Disease in sugarcane by PCR
O cultivo de cana-de-açúcar está em expansão no Brasil, devido ao crescente consumo de etanol por carros bicombustíveis. A área plantada está em crescimento, mas a produtividade nos últimos anos vem decrescendo, e fatores como incidência de doenças podem estar contribuindo para tal situação. Dentre as doenças, as bacterianas, como o Raquitismo d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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4. Otimização da detecção de raquitismo da soqueira e escaldadura das folhas em cana-de-açúcar utilizando PCR / Optimization of detection of Ratoon Stunting Disease and Leaf Scald Disease in sugarcane by PCR
O cultivo de cana-de-açúcar está em expansão no Brasil, devido ao crescente consumo de etanol por carros bicombustíveis. A área plantada está em crescimento, mas a produtividade nos últimos anos vem decrescendo, e fatores como incidência de doenças podem estar contribuindo para tal situação. Dentre as doenças, as bacterianas, como o Raquitismo d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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5. 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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6. 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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7. Análise faunística e flutuação populacional de cigarrinhas (Hemiptera: Cicadellidae) potenciais vetoras de Xylella fastidiosa em pomares de ameixeira nos estados do Rio Grande do Sul e São Paulo, Brasil / Faunistic analysis and seasonal fluctuation of sharpshooters (Hemiptera:Cicadellidae) that are potential vectors of Xylella fastidiosa in plum orchards in Rio Grande do Sul and São Paulo states, Brazil
The plum leaf scald (PLF) is a major threat for plum production in Brazil. PLF is caused by the bacteria Xylella fastidiosa which is transmitted by sharpshooter leafhoppers (Hemiptera: Cicadellidae, Cicadellinae). In this investigation, we surveyed the Cicadellinae species associated with plum orchards located in Rio Grande do Sul (RS) and São Paulo (SP) st
Publicado em: 2009
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8. Ação de produtos químico in vitro, em mudas e em campo sobre a mancha bacteriana (Xanthomonas perforans e X. gardneri) em tomate para processamento industrial / Chemical control of the bacterial spot in tomato for industrial processing: sensibility in isolated vitro and efficiency of products in seedlings and in field
The search of alternative products for tomato bacterial spot has been promoting by the lack of effectiveness registered by the traditional products available. The objective of this work was to evaluate a range of chemical products by in vitro tests, in experiments seedlings and field experiments. The products studied were: acibenzolar-S-methyl; benzalkonium
Publicado em: 2009
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9. Detection of Rhynchosporium secalis in barley seeds from Argentina through polymerase chain reaction technique
Leaf scald of barley caused by Rhynchosporium secalis is an important disease in Argentina. The fungus is a necrotrophic pathogen which survives in stubble, seeds and weeds. Isolation of R. secalis from seeds on artificial media usually has not been successful due to the slow growth rate of the pathogen and strong inhibition by contaminants. The objective in
Fitopatologia Brasileira. Publicado em: 2007-10
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10. Caracterização sorológica, molecular e patogênica de isolados de Xanthomonas albilineans (Ashby) Dowson agente causal da escaldadura da cana-de-açúcar / Sorologica, molecular and pathogenic characterization of isolates of Xanthomonas albilineans (Ashby) Dowson causal agent of the escaldadura of the sugarcane.
A escaldadura das folhas, causada por Xanthomonas albilineans, é uma importante doença da cana-de-açúcar, a qual interfere no rendimento e na longevidade de plantas infectadas. A intensidade de doença é variável, especialmente em relação a fatores climáticos e variedades cultivadas. A quantificação de danos é difícil de ser feita através de ob
Publicado em: 2006
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11. Rhynchosporoside, a host-selective toxin produced by Rhynchosporium secalis, the causal agent of scald disease of barley
Rhynchosporoside, a phytotoxic compound, has been isolated from cultures of Rhynchosporium secalis, the causal agent of scald disease of barley. The toxin is a cello-bioside of 1,2-propanediol. The compound may play some role in symptom expression because it was isolated from diseased plants in concentrations similar to those that could cause symptoms in tox
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12. Medium for Isolation and Growth of Bacteria Associated with Plum Leaf Scald and Phony Peach Diseases
Rickettsia-like bacteria associated with plum leaf scald and phony peach diseases were isolated from diseased but not from healthy tissues and cultured on charcoal-yeast extract medium (BCYE) buffered with ACES (2-[(2-amino-2-oxoethyl) amino]-ethanesulfonic acid). Optimum conditions for isolation and growth on BCYE medium were pH 6.5 to 6.9 at 20 and 25°C u