柑橘 貯藏病害에 관한 硏究 = Study on the Strorage Diseases of Citrus mandarin

다국어 초록 (Multilingual Abstract)

The study was conducted to investigate the resistance to storage disease of mandarin fruits during its preservation. Samples were collected from citrus orchards located in various parts of Che-ju island. A total of 360 fruits were stored for 18 weeks (from 22nd December 1979 to 2nd April 1980).
The results obtained are summarized as follows:
1. Fruit rot percentages during preservation were higher in the early and final stages of storage. blue mold (Penicillum italicum WEHMER) and green mold (Penicilium digatatum SACCARDO) were observed in the early stages, and gray mold (Botrytis cinerea PERSOON) and black rot (Alternaria citri PIERCE et ELLIS) were found in the later stages of preservation.
2. A total of six pathogenic molds were observed to develop during storage, in the following order: gray mold (Botrytis cinrea PERSOON) black rot (Alternaria citri PIERCE et ELLIS), blue mold (Penicilium italicum WEHMER), green mold (Penicilium digitatum SACCARDO), phoma rot (Phoma citricarpa McALP) and stem-end rot (Diaporthe citri WOLF).
3. The sugar content of the fruit decreased slightly during storage, this decrease did not result from the length of storage or location of origin. The acid content of fruit decreased in storage, but this decrease was not related to place of origin. A negative correlation existed between acid content and rate of fruit rot.