Pests and Diseases Viewer

Lily Viruses



P_lilyvirx

Lily Viruses

Usually appear in

Spring to Autumn.


Back to Pests and Diseases


Caused By:-     Various Viruses

Description

Viruses are an ultra small intracellular parasite that can only be seen under an electron microscope.They come in many shapes and sizes. [See Viruses]
They will invade a cell injecting its own RNA into the cell, hijack the cells DNA and cause it to replicate the virus RNA over and over again. they will also build up over time in a plant. When this happens the normal plant cell functions are interrupted and symptom usually show up on the exterior of the over all plant in the form of streaking or mottling, twisted growth, reduced plant size and/or rings on the bulbs. Lilies that are weakened by viruses are more susceptible to other forms of diseases. There are several viruses that affects Lilies. Some are:-
Tulip Breaking Virus affect painted tulips which get their characteristic streaking colour pattern from the Tulip Breaking Virus hence its name. This virus is transmitted mainly by predominantly aphids, but also some insects that suck or chew the Lily after feasting on an infected plant.
Lily Symptomless Virus (LSV) is the most common lily virus and is found in many species and hybrids. It can occur with virtually no outward visible symptoms except possibly some stunting in the growth. It does however weaken the plant leaving it more susceptible to other viruses and diseases.
Cucumber Mosaic Virus (CMV) causess very streaky foliage colour and distorted, brittle leaves and flowers. This virus has a wide range of host plants, including many common weeds and cultivated plants. The leaves may become pale and the plant stunted. This virus is also spread by aphids.
Arabis Mosaic Virus (AMV) causes mottling and flecking on the leaves and leaf deformation including enations (bumps) on grape vine leaves. Infected plants may have shortened internodes and exhibit vine decline symptoms.
Lily Virus X (LVX), Tobacco Mosaic Virus (TMV), Tobacco Ringspot Virus (TRSV) and Tobacco Rattle Virus (TRV). LVX, AMV, TRV and TRSV are soil born and transmitted via nematodes.
Viral diseases affect all parts of the plant, the bulbs, roots, stem, leaves and flowers. So any bulblets or stem bulbils from an infected plant will also be infected.


Control

The best way to reduce viral infections is to have good gardening practices by control of soil moisture and planting lilies in well drained soil. Avoid over watering in the hot summer months and observe your plants on a regular basis. However, be aware that some nutrient deficiencies cause streaking in leaves and flowers. The continuing hybridization of viral resistant cultivars will also greatly help to control future problems for home gardeners and commercial growers.
There is no cure for viruses and plants are best destroyed as soon as they are found. This will help prevent the spread.
See also these other Eelworms CHAFER GRUBS, CHRYSANTHEMUM EELWORM, DIEBACK, EELWORMS, ENCHYTRAEID WORMS, IRIS BORER CATERPILLARS, LEAF AND BUD EELWORM, LEATHERJACKETS, NUT WEEVIL, ONION EELWORM, NARCISSUS EELWORM, PEA AND LEAF POD SPOT, PHLOX EELWORM, POTATO CYST EELWORM, ROOT KNOT EELWORMS, SLUGS, SNAILS, STEM AND BULB EELWORM, TOMATO CYST EELWORMS, VINE WEEVIL, WILTING, WIREWORM, WORMS.



Back to top