The effects of topical treatments with 6-pentyl-2-pyrone and structural analogues on stem end postharvest rots in kiwifruit due toBotrytis cinerea
✍ Scribed by Poole, Philip R; Ward, Brian G; Whitaker, Giles
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 199 KB
- Volume
- 77
- Category
- Article
- ISSN
- 0022-5142
No coin nor oath required. For personal study only.
✦ Synopsis
The picking wounds in kiwifruit formed by breaking o † the pedicels at harvest were treated topically with the naturally occurring lactones 6-pentyl-2pyrone (6PP), decano-d-lactone (DL) and 2-deceno-d-lactone (massoialacetone : ML), and with the synthetic fungicide vinclozolin. 6PP was applied at rates from 0É4 to 4 mg, neat or diluted in oil, water or acetone. 6PP treatments consistently reduced the incidence of Botrytis cinerea storage rots to low levels in both inoculated and naturally infected fruit. For inoculated fruit, control was achieved even when treatment was delayed up to 2 days from inoculation. ML gave signiÐcant but lesser control than 6PP, while DL was not generally e †ective. DL was also less e †ective than ML or 6PP at suppressing B cinerea inoculum germination in vitro. Much lower rates of vinclozolin (8 or 70 lg) also gave signiÐcant control of storage rots. Such topical treatment methods permit control of storage diseases with similar application quantities to currently accepted preharvest fungicide treatments.