Downy mildew of sweet basil (Ocimum basilicum) caused by Peronospora sp. in Argentina

In the green belt surrounding Buenos Aires and La Plata cities, Argentina, sweet basil (Ocimum basilicum) is grown commercially under greenhouse mainly for fresh consumption. In February 2008, plants showing typical symptoms of downy mildew were found in greenhouses in La Plata. The disease was wide...

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Detalles Bibliográficos
Autores principales: Ronco, Blanca Lía, Rollán, María Cristina, Choi, Y. J., Shin, H. D.
Formato: Articulo Comunicacion
Lenguaje:Inglés
Publicado: 2009
Materias:
Ciencias Agrarias
Peronospora
Enfermedades de las Plantas
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82663
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82663
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Peronospora
Enfermedades de las Plantas
spellingShingle Ciencias Agrarias
Peronospora
Enfermedades de las Plantas
Ronco, Blanca Lía
Rollán, María Cristina
Choi, Y. J.
Shin, H. D.
Downy mildew of sweet basil (Ocimum basilicum) caused by Peronospora sp. in Argentina
topic_facet Ciencias Agrarias
Peronospora
Enfermedades de las Plantas
description In the green belt surrounding Buenos Aires and La Plata cities, Argentina, sweet basil (Ocimum basilicum) is grown commercially under greenhouse mainly for fresh consumption. In February 2008, plants showing typical symptoms of downy mildew were found in greenhouses in La Plata. The disease was widespread in the cropped area with 100% prevalence. Infection resulted in chlorotic leaves with a greyish to dark brown fungal-like growth on the lower surfaces. A sample was deposited in the local herbarium (KUS-F23241). Conidiophores were subhyaline, 230­ 460 X 7-11 pm, straight, monopodially branched, in 4-6 orders, and emergent from stomata. Ultimate branchlets were mostly in pairs, slightly curved, 10-25 (-30) pm long and had subtruncate tips. Conidia were broadly ellipsoidal to subglobose, greyish brown, and measured 24*3- 32-5 X 22-5-26-5 pm (length/width ratio = 1-06-1-23). This pathogen is unequivocally in the genus Peronospora, and well concordant with characters ofthe unnamedPeronospora speciesreported in basil (Belbahri et al., 2005).
format Articulo
Comunicacion
author Ronco, Blanca Lía
Rollán, María Cristina
Choi, Y. J.
Shin, H. D.
author_facet Ronco, Blanca Lía
Rollán, María Cristina
Choi, Y. J.
Shin, H. D.
author_sort Ronco, Blanca Lía
title Downy mildew of sweet basil (Ocimum basilicum) caused by Peronospora sp. in Argentina
title_short Downy mildew of sweet basil (Ocimum basilicum) caused by Peronospora sp. in Argentina
title_full Downy mildew of sweet basil (Ocimum basilicum) caused by Peronospora sp. in Argentina
title_fullStr Downy mildew of sweet basil (Ocimum basilicum) caused by Peronospora sp. in Argentina
title_full_unstemmed Downy mildew of sweet basil (Ocimum basilicum) caused by Peronospora sp. in Argentina
title_sort downy mildew of sweet basil (ocimum basilicum) caused by peronospora sp. in argentina
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/82663
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AT choiyj downymildewofsweetbasilocimumbasilicumcausedbyperonosporaspinargentina
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