ISHS Acta Horticulturae 377: VIII International Symposium on Virus Diseases of Ornamental Plants
OCCURRENCE OF TOBACCO RATTLE VIRUS IN ORNAMENTAL BULBOUS CROPS IN THE NETHERLANDS |
| Author: | C.J. Asjes |
| Abstract:
The occurrence of tobacco rattle virus (TRV) in bulbous crops, e.g., tulip, hyacinth, narcissus, gladiolus, freesia, Eremurus, etc., is briefly reported. Different serotypes of TRV were carried by different trichodorid nematode species. Symptoms of TRV in tulip, hyacinth, narcissus, and gladiolus are briefly described. The detection of TRV appeared fairly unreliable in tulip bulbs, and in gladiolus in the leaves, corm, and roots of the same plant. Late planting in autumn, e.g., November, largely prevented the TRV infection of tulip. The effect of previous crops on the TRV-infection of tulips was particularly evident for two plant species, e.g., Brassica napus and Lolium multiflorum (Italian ryegrass). The recurrence of TRV in the progeny of tulip bulbs in the primarily infected lots obtained from different locations differed in rates of infection in consecutive years. The complexity of TRV control in ornamental bulbous crops is indicated. | |
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