ISHS Acta Horticulturae 405: VI International Symposium on Postharvest Physiology of Ornamental Plants
METHOD TO TEST ROSE CULTIVARS ON THEIR SUSCEPTIBILITY TO BOTRYTIS CINEREA DURING THE POST-HARVEST STAGE |
| Authors: | A. Hazendonk, M. ten Hoope, T. van der Wurff |
| Abstract:
An infection of Botrytis cinerea on the petals of roses reduces the ornamental value. It is well-known that differences in susceptibility exist between the cultivars. We developed a test in which these differences can be determined. The flowers were sprayed with a solution containing Botrytis spores (concentration ±1·104 spores per millilitre). The flowers were then placed at a temperature of 20°C and a relative humidity above 90%. After one day the flowers were removed to a climate room with a temperature of 20°C and a relative humidity of 60%. Seven days after inoculation the flowers were judged on the degree of colonization of the petal. Testing an assortment of twenty cultivars showed that most of them were susceptible. Only a few cultivars, all small-flowering types, were less susceptible to Botrytis. | |
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