Observation of watercore dissipation in ‘Braebum’ apple by magnetic resonance imaging
- 1 March 1999
- journal article
- research article
- Published by Taylor & Francis Ltd in New Zealand Journal of Crop and Horticultural Science
- Vol. 27 (1), 47-52
- https://doi.org/10.1080/01140671.1999.9514079
Abstract
Following unusually high temperatures during the 1997/98 growing season, a significant incidence of watercore was observed in the New Zealand ‘Braeburn’ crop (Mains domestica) for the first time. Serial proton magnetic resonance imaging was subsequently used to monitor the characteristics of disorder amelioration in individual fruit during 3‐week and 15‐week storage trials (0–0.5°C). Symptoms (water‐soaked appearance of flesh around the locule area and extending into the cortex) in “slightly” affected fruit (>0.5 cm2 affected or 25% of the equatorial cross‐section area affected) also dispersed completely, but over a longer time—6–8 weeks. However, the internal appearance of some severely affected fruit was unacceptable after 15 weeks of coolstorage. It is not clear whether the presence of cavities and brown mealy flesh was attributable to watercore or other factors associated with the anomalous seasonal conditions. Lines of ‘Braeburn’ in which a high incidence of severe watercore is present at harvest thus represent high risk for long‐term storage.Keywords
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