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영어

We analysed the characteristics of about 8,700 fruits obtained from about 1,700 mutated branches. The result showed that the average of fruit weight was 117.1±50.9g, which is heavier than the weight of 2013 . The fruit shape index was in 0.8 to 0.9, which occupied 60.71% out of total fruits. The average of sweetness was 7.9±1.6˚Brix, which is lower than the sweetness of 2013. The average of acidity was 0.77±0.3% similar to the acidity of 2013. Sweetness/acidity ratio of most of mutant fruits showed 9 and more. We will further use genetic resources to select new cultivar of Satsuma mandarin (Citrus unshiu Marc. cv. Miyagawa-Wase) showing high quality.