Evaluation of grapevines for resistance to downy mildew (Plasmopara viticola) under greenhouse conditions.

Vista sencilla de ítem
dc.contributorJULLYANNA 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.
dc.creatorCARVALHO, J. N. de
dc.creatorBARBOSA, M. A. G.
dc.creatorCARVALHO, P. A. de
dc.creatorPIO, R.
dc.creatorBATISTA, D. da C.
dc.creatorLEAO, P. C. de S.
dc.date2024-01-26T19:32:20Z
dc.date2024-01-26T19:32:20Z
dc.date2023-11-03
dc.date2023
dc.date.accessioned2026-07-07T05:58:34Z
dc.descriptionGrapevine 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.
dc.identifierTropical Plant Pathology, v. 48, n. 6, p. 696-702 2023.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1157756
dc.identifierhttps://doi.org/10.1007/s40858-023-00613-5
dc.identifier.urihttp://hdl.handle.net/123456789/503712
dc.languageeng
dc.rightsopenAccess
dc.subjectComponentes epidemiológicos
dc.subjectIncidência
dc.subjectAnálise multivariada
dc.subjectGravidade
dc.subjectResistência ao míldio
dc.subjectCasa de vegetação
dc.subjectMíldio da videira
dc.subjectUva sem semente
dc.subjectThompson Seedles
dc.subjectUva
dc.subjectMíldio
dc.subjectDoença
dc.subjectFungo
dc.subjectMultivariate analysis
dc.subjectPlasmopara viticola
dc.subjectDisease severity
dc.subjectVitis
dc.subjectGrapes
dc.subjectSeedless varieties
dc.titleEvaluation of grapevines for resistance to downy mildew (Plasmopara viticola) under greenhouse conditions.
dc.typeArtigo de periódico

Archivos

Colecciones

Embrapa Semi-Árido (CPATSA)