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Causal Agents of Powdery Mildew of Cucurbits in Sudan
- Source :
- Plant Disease, Plant Disease, American Phytopathological Society, 1995, 79 (6), pp.634-636. ⟨10.1094/PD-79-0634⟩
- Publication Year :
- 1995
- Publisher :
- Scientific Societies, 1995.
-
Abstract
- International audience; In a survey of cucurbit crops in Sudan, 234 samples of melon, cucumber, and squash showing symptoms of powdery mildew were infected with Sphaerotheca fuliginea, while Erysiphe cichor-acearum was only observed on two samples of watermelon showing mild symptoms. Ieeveillula taurica was not observed on any sample. Field trials with differential lines of melon revealed the presence of race 1 of S. fuliginea in Gezira (Central Sudan) in the summer of 1993, and race 2 in the following winter. Virulence tests in controlled conditions on a limited number of isolates suggest that a shift in prevalence of those races may have occurred on that site over time. The geographic scale of this shift was probably limited as race 0 was observed in late autumn in northeast Sudan in the Gash Delta.
- Subjects :
- 0106 biological sciences
Erysiphe cichoracearum
POTIRON
Veterinary medicine
Citrullus lanatus
Melon
Leveillula taurica
Plant Science
01 natural sciences
ERYSIPHE CICHORACEARUM
03 medical and health sciences
COURGETTE
parasitic diseases
[SDV.MP.MYC]Life Sciences [q-bio]/Microbiology and Parasitology/Mycology
030304 developmental biology
0303 health sciences
biology
food and beverages
biology.organism_classification
[SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacy
PASTEQUE
Agronomy
COURGE MUSQUEE
REPARTITION GEOGRAPHIQUE
Agronomy and Crop Science
Sphaerotheca
Cucurbitaceae
Powdery mildew
010606 plant biology & botany
Squash
Subjects
Details
- ISSN :
- 01912917
- Volume :
- 79
- Database :
- OpenAIRE
- Journal :
- Plant Disease
- Accession number :
- edsair.doi.dedup.....34ad6055edbe29d32fe995017b0610a0