Characteristics of the peach ‘Yumemizuki’ during the sapling stage (5-7 years) in institutional cultivation
2020
Ikeda, H. (Yamanashi Fruit Experiment Station, Yamanashi (Japan)) | Hagihara, E. | Tomita, A.
The sapling characteristics of 'Yumemizuki' grown at the Yamanashi Prefectural Fruit Tree Experiment Site were investigated. While growing from 2015 to 2017 (5 to 7 years old), 'Yumemizuki' was in full bloom on February 25 and at the beginning of harvest on May 25. Its full bloom was two days earlier, and the beginning of harvest was ten days later than those of 'Hikawahakuhou'. As compared with those of 'Hakuhou,' the full bloom of 'Yumemizuki' was 3 days earlier, and harvest started 8 days earlier. The fruit weight of 'Yumemizuki' was 287 g, which surpassed that of 'Hikawahakuhou', 'Yumemizuki' had a sugar content of 13.3 Brix, an acidity of pH 5.0, a high sugar content, low acidity, and good taste. The coloring was 4.1, which was better than that of the control variety. However, the degree of protrusion at the top of the fruit was rather large. 'Yumemizuki' showed physiological fruit drop, which started 50 days after full bloom and continued until about 65 days after full bloom. The fruit drop rate was 25%. 'Yumemizuki' was less colored in bagless cultivation than in bagged cultivation. Fruit cracking occurred frequently, the number of fruit points on the fruit's surface increased, and the quality of the fruit's appearance deteriorated.
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