Relationship between Internal Quality of Fruit and Fruiting Characteristics or Appearance of Fruit in 7 Citruses

Abstract

In this study, the relationship between Brix or acidity and characteristics of fruit was investigated in 7 citruses (‘Aoshima unshu’, ‘Shiranuhi’, ‘Setoka’, ‘Harehime’, ‘Seinannohikari’, ‘Tsunokagayaki’, and ‘Reikou’). In all 7 citruses, the height of fruiting affected Brix, and Brix was low when the transverse diameter of fruit was large. In decision tree analysis for Brix or acidity with all data on the characteristics of fruit, results differed among citruses. In decision trees for Brix of ‘Aoshima unshu’ and ‘Shiranuhi’, it was indicated that fruits with a high a* value of peel showed high Brix in juice. Also, in all citruses, fruits with low transverse or vertical diameters showed high Brix in juice. In the decision tree for acidity, it was indicated that transverse and vertical diameters affect the acidity of juice of citruses other than ‘Aoshima unshu’.