Search results
Results from the WOW.Com Content Network
Plasmopara viticola, the causal agent of grapevine downy mildew, is a heterothallic oomycete that overwinters as oospores in leaf litter and soil. In the spring, oospores germinate to produce macrosporangia, which under wet condition release zoospores.
Downy mildew refers to any of several types of oomycete microbes that are obligate parasites of plants. Downy mildews exclusively belong to the Peronosporaceae family. In commercial agriculture , they are a particular problem for growers of crucifers , grapes and vegetables that grow on vines.
This is a list of diseases of grapes (Vitis spp ... Bird's eye (Anthracnose) rot Botrytis or "Noble rot" Downy mildew Powdery mildew. ... Common Names of Diseases ...
Some downy mildew genera have a more restricted host range, e.g. Basidiophora, Paraperonospora, Protobremia and Bremia on Asteraceae; Perofascia and Hyaloperonospora almost only on Brassicaceae; Viennotia, Graminivora, Poakatesthia, Sclerospora and Peronosclerospora on Poaceae, and Plasmoverna on Ranunculaceae.
Peronospora is a genus of oomycetes that are obligate plant pathogens of many eudicots. [1] Most species in this group produce a downy mildew disease, which can cause severe damage to many different cultivated crops, as well as wild and ornamental plants. [2]
Hyaloperonospora parasitica [3] causes downy mildew on a wide range of many different plants. It belongs to the Kingdom Chromista, the phylum Oomycota, and the family Peronosporaceae. The former name for H. parasitica was Peronospora parasitica until it was reclassified and put in the genus Hyaloperonospora. It is an especially vicious disease ...
Species in this group produce a disease called downy mildew and can infect many important crops. [1] From the 19 downy mildew producing genera, Hyaloperonospora has been grouped with Perofascia in the brassicolous downy mildews. [1] In the group of downy mildews, Hyaloperonospora is the third biggest genus. [1]
The Delaware grape is susceptible to downy mildew and ripens earlier than 'Concord'. [3] The Delaware grape is also a table grape variety sold in supermarkets throughout South Korea and Japan, where V. labrusca grape varieties are popular for their fragrance. Delaware Punch is named for the Delaware grape from which its flavor is primarily derived.