Cem9165 said:Zhirair, thank you for the information about the appearance of leaf changes with infected lilies. Interestingly with these lilies, the leaves grew normally, and looked healthy. I'm glad that I've removed the affected plants, and I'll watching carefully for other plants that may develop the virus next spring.
Here's my dumb question of the day. I do grow tulips like Gudoschnick and La Courtine, that do show the color break on the blooms, and which is desirable for tulips. Could the TBV be transmitted from the tulips by mites or aphids to infect the lilies?
Striped tulips, depending on the variety, behave diferently. 'Gudoshnik' doesn't show colour break, when infected. The infected plants are diagnosed according to the leaf mosaic, the symptoms of which can be observed only on the young leaves at the beginning of vegetation before the buds appear. On old leaves the symptoms cannot be seen. Exception are the plants, which are infected for several year. You should bare in mind, that the color of 'Gudoshnik' is variable within the variety, i.e. you can see darker or lighter samples when growing it. It doesn't have to do with the virus. In case of 'La Courtine', the pattren symmertry is broken, or the infected plants bloom totally yellow.
As to the transmission of TBV from tulips to lilies, theorically it is possible, but it is not that common, as tulips and lilies doen't have that much common pests. The aphyds which attack tulips prefer to feed on tulips, the lily aphyds, in their turn, have different preferances. In many cases, virus from the tulips are transferred mechanically by the gardeners.
I study and experiment virus problems on bulbs over 20 years. Now I am very keen in identifying viruses on bulbous plants. I grow tulips together with lilies without any problems. The most important is to mantain virus free collection. If the plants are healthy, everything goes O.K. each newly obtained plant goes to uarantine for a year or two, and then it joins to the main collection.