ISHS Acta Horticulturae 130: XII International Symposium on Fruit Tree Virus Diseases
DISTRIBUTION OF CHLOROTIC LEAF SPOT VIRUS-INFECTED BUDS ON VARIOUS LENGTHS OF APPLE BUDSTICKS IN SUCCESSIVE YEARS. |
| Author: | P.R. Fridlund |
| Abstract:
Four different lengths of apple budsticks were harvested from two, chlorotic leaf spot virus-infected apple trees during four different years. Individual bud indexings showed that the shortest budsticks (5–10 buds long) usually were infected systemically. Those sticks 20 and 40 buds long contained a number of healthy buds, particularly towards the tips of the budsticks. The presence of healthy buds appeared related to host growth and/or virus multiplication and movement rather than weather effects. | |
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