Impatiens
Key warning symptoms:
- Dark rings
- Black stems
- Distorted leaves
Impatiens necrotic spot virus, spread by thrips, accounts for most
of the virus infections we detect in impatiens. Symptoms vary
greatly. Common symptoms in garden impatiens include dirty-looking,
dark-colored rings, black stem sections, distorted leaves, and leaves
that drop off. In New Guinea impatiens, symptoms can include brown
mottled patterns, distorted leaves, dead stem sections, stunting and
an unthrifty appearance. Tomato spotted wilt virus, which is closely
related and also spread by thrips, causes a similar array of symptoms.
Tobacco streak virus, although fairly common in impatiens, usually
produces only a faint mosaic pattern on the undersides of leaves, or
no symptoms at all.
Impatiens Screen
Pathogen |
Symbol |
Spread by |
Test protocol |
| Cucumber Mosaic Virus |
CMV |
aphid, mechanical, seed |
ELISA |
| Impatiens Necrotic Spot Virus |
INSV |
thrips, mechanical |
ELISA |
| Tobacco Mosaic Virus |
TMV |
contact, mechanical, seed |
ELISA |
| Tobacco Ringspot Virus |
TRSV |
insect, mechanical, nematode, seed |
ELISA |
| Tobacco Streak Virus |
TSV |
thrips, mechanical, seed |
ELISA |
| Tomato Aspermy Virus |
TAV |
aphid, mechanical, seed |
ELISA |
| Tomato Ringspot Virus |
ToRSV |
nematode, mechanical,seed |
ELISA |
| Tomato Spotted Wilt Virus |
TSWV |
thrips, mechanical |
ELISA |
Other tests available for impatiens are:
Pathogen |
Symbol |
Spread by |
Test protocol |
| Alfalfa Mosaic Virus |
AMV |
aphid, mechanical, seed |
ELISA |
| Carnation Mottle Virus |
CarMV |
contact, mechanical |
ELISA |
| Carlavirus group test |
Carla |
aphid, mechanical |
PCR |
| Nepovirus group test |
Nepo |
nematode, mechanical |
PCR |
| Potyvirus group test |
Poty |
aphid, mechanical, seed |
PCR |
| Tobamovirus group test |
Tobamo |
contact, mechanical, seed |
PCR |
