Abstract
The susceptibility of 46 carrot cultivars to infection by Alternaria radicina Meier, Drechsler, and Eddy, causal agent of black rot disease, was evaluated in field trials with a toothpick inoculation method. Toothpicks infested with A. radicina were inserted into the shoulders of 10- to 12-week-old carrots (Daucus carota L.) and lesion areas were measured 9 to 10 weeks later. There were significant differences in lesion size among cultivars. Relatively resistant cultivars included 'Panther' and 'Caro-pak', and susceptible cultivars included 'Royal Chantenay' and 'Nogales'. Nine of the cultivars were inoculated with A. radicina-infested toothpicks and maintained in cold-storage for 10 weeks. Lesion development was greater in cold-storage than in the field, but the relative ranking of cultivars in terms of resistance to A. radicina was similar.
Original language | English (US) |
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Pages (from-to) | 1099-1102 |
Number of pages | 4 |
Journal | HortScience |
Volume | 35 |
Issue number | 6 |
DOIs | |
State | Published - 2000 |
Externally published | Yes |
Keywords
- Black rot
- Daucus carota
- Disease resistance
- Postharvest disease
ASJC Scopus subject areas
- Horticulture