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Gerald Holmes, Strawberry Center, Cal Poly San Luis Obispo, Bugwood.org
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Image Number: 1571077

downy mildew (Peronospora destructor (Berk.) Casp. ex Berk.) (Berk.) Casp. ex Berk.

Photographer:
Gerald Holmes
Descriptor:
Sign
Description:
The downy mildew pathogen (Peronospora destructor) produces a downy growth on the leaf surface (center frame; left edge of leaf) which eventually kills the leaf. March 1995
Image type:
Field
Host:
garden onion (Allium cepa L.)

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Image location:
, Imperial County

Subject

Kingdom: Chromista
Phylum: Oomycota
Class: Oomycetes
Order: Peronosporales
Family: Peronosporaceae
Genus: Peronospora
Subject: Peronospora destructor (Berk.) Casp. ex Berk.

Host

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Liliopsida
Order: Asparagales
Family: Amaryllidaceae
Genus: Allium
Subject: Allium cepa L.
Node Affiliation:
Bugwood - UGA
Image uploaded:
Friday, August 14, 2009
Image last updated:
Tuesday, August 10, 2010