Biology Reference
In-Depth Information
yellow bands. Transmitted by peach and other
aphids.
Carnation Necrotic Fleck Closterovirus
Severe necrotic flecking and streaking to mild
yellow flecks on carnation.
Canna Yellow Mottle Badnavirus
Bacilliform virions, not enveloped, 120-130 nm
length and 28 nm wide. Virus caused systemic
veinal yellowing, mottling and chlorosis of
Canna
spp.
Carnation Ring Spot Dianthovirus
Concentric rings on sweet william with vein
clearing, then general mosaic; necrotic rings on
carnation, often combined with reddening and
curling of older leaves. Sap-transmissible on cut-
ting knife.
Carnation Etched Ring Caulimovirus
Causes an etched-ring pattern on carnation
leaves.
Carnation Streak
Carnation Italian Ringspot
Tombusvirus
A strain of Carnation Necrotic Fleck
Closterovirus. Yellow or reddish spots and
streaks parallel to veins; lower leaves turn yellow
and die. Graft-transmissible.
It is synonym for carnation strain of Tomato
Bushy Stunt Tombusvirus.
Carnation Vein Mottle Potyvirus
Carnation Latent Carlavirus
The best test for diagnosis of this virus is immu-
nosorbent electron microscopy technique.
This virus is serologically related to potato
viruses S and M, chrysanthemum virus B and
other carlaviruses.
Carnation Yellows
Carnation Mosaic
Foliage mottling, flower streaking due to combi-
nation of streak and mosaic viruses.
Widespread on carnation and sweet william.
Light and dark green mottling in young leaves is
followed by yellow or necrotic spots or streaks.
Flowers may be spotted or striped. The vector is
the peach, not the carnation, aphid. Greenhouse
fumigation helps in control.
Carrot Motley Dwarf
¼
Carrot Mottle
Umbrarvirus
An Australian disease now present in California.
Leaflets are small, chlorotic, with twisted
petioles; plants are stunted, roots unmarketable.
Vectors are aphids.
Carnation Mottle Carmovirus
Carrot Red Leaf Luteovirus
Common in commercial carnations but
producing only faint leaf mottling and flower
streaks; transmitted by root contact or cutting
knife.
Transmitted by aphids in persistent manner, but
does not multiply in the vector. No transmission
by sap, seeds, or pollen.
