ISHS Acta Horticulturae 568: X International Symposium on Virus Diseases of Ornamental Plants
EFFECT OF SEASONAL DETECTION OF LILY SYMPTOMLESS VIRUS AND LILY MOTTLE VIRUS ON APHID-BORNE VIRUS SPREAD IN LILIUM IN THE NETHERLANDS |
| Authors: | C.J. Asjes, G.J. Blom-Barnhoorn, A.R. van Schadewijk |
| Keywords: | bulb test, leaf test, virus-source incidence |
| Abstract:
In this study the seasonal detection by DAS-ELISA of lily symptomless virus (LSV; carlavirus) and lily mottle virus (LMoV; potyvirus) in primarily and secondarily infected plants in the yearly growth cycle and its effect on the level of virus-source incidence and virus spread is described. LSV detection in primarily infected plants was variable due to by non-uniform virus distribution throughout the lily plants. LSV in leaves was detected at low rate compared to data obtained in consecutive bulb testing. The variability in the detection of LMoV was less than found for LSV. The LMoV-tests late in the field season approximated the rates of infection detected in bulbs during storage and/or in leaves of plants in the next season. The detection of LSV in bulbs was reliable. The inefficiency of detection of LMoV in bulbs of Oriental hybrids was confirmed. The inability to detect LMoV at ultimate level in bulbs of Asiatic hybrids was newly found. In secondarily infected plants LSV was readily detectable. LMoV was not reliably traceable in young plants for one to two months after emergence from soil. The effect of primary and/or secondary infection of LSV and LMoV on the level of virus-source incidence and virus spread in lots meant for further propagation or for the production of cut flowers is indicated. | |
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