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Biblioteca(s):  Embrapa Semiárido.
Data corrente:  03/11/2023
Data da última atualização:  26/01/2024
Tipo da produção científica:  Artigo em Periódico Indexado
Autoria:  CARVALHO, J. N. de; BARBOSA, M. A. G.; CARVALHO, P. A. de; PIO, R.; BATISTA, D. da C.; LEAO, P. C. de S.
Afiliação:  JULLYANNA NAIR DE CARVALHO, Universidade Federal de Lavras; MARIA ANGELICA GUIMARAES BARBOSA, CPATSA; POLLYANNA APARECIDA DE CARVALHO, Centro de Tecnologia Canavieira, Piracicaba, SP; RAFAEL PIO, Universidade Federal de Lavras, Lavras; DIOGENES DA CRUZ BATISTA, CPATSA; PATRICIA COELHO DE SOUZA LEAO, CPATSA.
Título:  Evaluation of grapevines for resistance to downy mildew (Plasmopara viticola) under greenhouse conditions.
Ano de publicação:  2023
Fonte/Imprenta:  Tropical Plant Pathology, v. 48, n. 6, p. 696-702 2023.
DOI:  https://doi.org/10.1007/s40858-023-00613-5
Idioma:  Inglês
Conteúdo:  Grapevine downy mildew, caused by the fungus Plasmopara viticola is a disease with a great economic impact on grapevine in the Brazil. The objective of this study was to evaluate resistance to downy mildew in seedless grapevine hybrids and one susceptible cultivar ?Thompson Seedles? using natural infection (cross-contamination) and artificial inoculation method under greenhouse conditions. The experiments were performed at Embrapa Semiarid, Petrolina, Pernambuco, Brazil. The first used natural infection from plants with diseased vines, and the second artificial infection in which plants were sprayed with a spore suspension with a concentration of 105 conidia mL-1. The evaluated variables were final incidence, final severity, area under the curve of disease incidence progression and area under the curve of disease severity progression. All evaluated genotypes showed symptoms of downy mildew. The CPATSA 28.14 genotype presented the lowest values of final severity, final incidence, area under the disease severity progress curve and area under the disease incidence progress curve in both experiments. Therefore, the CPATSA 28.14 genotype was identified as having greater resistance to grapevine downy mildew. Clustering by the unweighted pair grouping method using arithmetic averages (UPGMA) resulted in the separation of the genotypes into three and two similarity groups in Experiments I and II, respectively, indicating low diversity among the grapevine hybrids evaluated.
Palavras-Chave:  Análise multivariada; Casa de vegetação; Componentes epidemiológicos; Gravidade; Incidência; Míldio da videira; Resistência ao míldio; Thompson Seedles; Uva sem semente.
Thesagro:  Doença; Fungo; Míldio; Uva.
Thesaurus Nal:  Disease severity; Grapes; Multivariate analysis; Plasmopara viticola; Seedless varieties; Vitis.
Categoria do assunto:  F Plantas e Produtos de Origem Vegetal
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/261196/1/Evaluation-of-grapevines-for-resistance-to-downy-mildew-Plasmopara-viticola-under-greenhouse-conditions.-2023.pdf
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Registro original:  Embrapa Semiárido (CPATSA)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CPATSA60705 - 1UPCAP - DD
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Biblioteca(s):  Embrapa Soja.
Data corrente:  07/01/2015
Data da última atualização:  07/04/2022
Tipo da produção científica:  Artigo em Periódico Indexado
Circulação/Nível:  A - 2
Autoria:  MORAES, M. T. de; DEBIASI, H.; CARLESSO, R.; FRANCHINI, J. C.; SILVA, V. R. da.
Afiliação:  MOACIR TUZZIN DE MORAES, UFRGS; HENRIQUE DEBIASI, CNPSO; REIMAR CARLESSO, UFSM; JULIO CEZAR FRANCHINI DOS SANTOS, CNPSO; VANDERLEI RODRIGUES DA SILVA, UFSM.
Título:  Critical limits of soil penetration resistance in a rhodic Eutrudox.
Ano de publicação:  2014
Fonte/Imprenta:  Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 38, n. 1, p. 288-298, jan./fev. 2014.
ISSN:  0100-0683
DOI:  http://dx.doi.org/10.1590/S0100-06832014000100029
Idioma:  Inglês
Conteúdo:  ABSTRACT: Soil penetration resistance is an important indicator of soil physical quality and the critical limit of 2 MPa has been widely used to characterize the soil physical quality, in both no-tillage and conventional systems. The aim of this study was to quantify the influence of different tillage and cropping systems on the soil penetration resistance in a Rhodic Eutrudox. The experiment was carried out in a 5 × 2 factorial, completely randomized block design (tillage systems vs cropping systems), with four replications. The tillage systems consisted of: conventional tillage disk harrow; minimum tillage with annual chiseling; minimum tillage with chiseling every three years; no-tillage for 11 consecutive years; and no-tillage for 24 consecutive years. The factor cropping systems was represented by: crop rotation and crop succession. The soil penetration resistance (SPR) was determined in 20 soil samples per treatment and layer (0.0-0.10; 0.10-0.20 and 0.20-0.30 m) for each soil matric potential: -6, -10, -33, -100, -500 kPa. The SPR was determined at a volumetric soil water content equivalent to the fraction of plant-available water of 0.7. There were no differences of soil penetration resistance between the two cropping systems. Differences in soil penetration resistance among tillage systems were related to the matric potential at which the samples were equilibrated. The critical SPR limit of 2 MPa normally used for conventional tillage should be maintained. However, ... Mostrar Tudo
Thesagro:  Solo.
Thesaurus NAL:  Soil penetration resistance.
Categoria do assunto:  X Pesquisa, Tecnologia e Engenharia
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/114942/1/Critical-limits-of-soil-penetration-resistance-in-a-rhodic-Eutrudox.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Soja (CNPSO)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
CNPSO35678 - 1UPCAP - DD
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