ISHS Acta Horticulturae 446: VI International Symposium on Vaccinium Culture
IDENTIFYING SOURCES OF RESISTANCE TO MUMMY BERRY AND ANTHRACNOSE IN HIGHBUSH BLUEBERRY |
| Authors: | A.W. Stretch, M.K. Ehlenfeldt |
| Keywords: | rabbiteye, V. darrowi, V. elliottii, V. boreale, V. tenellum, V. corymbosum, V. pallidum, V. myrtilloides |
| Abstract:
A wide collection of highbush blueberry cultivars have been screened for resistance to the blighting and fruit infection phase of mummy berry, caused by the fungus Monilinia vaccinii-corymbosi. Across cultivars, blighting has been shown to be strongly correlated to shoot length during the major infection period. Subsequent studies have shown that both avoidance and physiological resistance are present in the most resistant cultivars. Fruit infection evaluations in highbush cultivars have shown a range of resistance with no correlation between shoot and blight resistance. Preliminary evaluations have been made of fruit infection resistance in several diploid species. Thirty-two cultivars have been evaluated for resistance to anthracnose fruit-rot caused by the fungus Colletotrichum acutatum, and varying levels of resistance have been observed. | |
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