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"Yeo-Ok Park"

New Cultivar Developed

대과종 단감 신품종 ‘단누리’
A New Sweet Persimmon Cultivar, ‘Dannuri’, with Large-Sized Fruits
Eun-Gyeong Kim, Yeo-Ok Park, Ji-Young Son, Gwang-Hwan Ahn, Hae-Suk Yoon, Young-Ho Chang
Korean. J. Breed. Sci. 2021;53(2):186-189.
Published online June 1, 2021
DOI: https://doi.org/10.9787/KJBS.2021.53.2.186

To develop early ripening sweet persimmon varieties with high fruit qualities, ‘Danyeon 104’ was crossed with ‘Taishuu’ at the Sweet Persimmon Research Institute, Gyeongsangnam-do Agricultural Research & Extension Services in 2010. In 2015, ‘10-1-60’ was selected and investigated from among the seedlings of this cross, and in 2018, it was confirmed as a superior variety for the production of large-sized sweet persimmon with good fruit qualities and was named ‘Dannuri’. The ‘Dannuri’ trees grew vigorously in the early stage and exhibited a spreading shape as they aged. The flowers possessed both the female and male organs. The full blooming date of ‘Dannuri’ was May 22, which was close to that of ‘Taishuu’ (May 19). The average harvest time of ‘Dannuri’ was 143 days after the full bloom, and it matured approximately one week earlier than ‘Taishuu’. The fruits of ‘Dannuri’ were characterized by beautiful orange skin color with round flat shape with an average weight of 320 g—which was 1.2-fold higher than that of ‘Taishuu’ (265 g)—and soluble solids content of 18.4 °Brix, which was also higher than that of ‘Taishuu’ (17.2 °Brix). Additionally, the marketable fruit rate of ‘Dannuri’ was 90.0%, which was also higher than that of ‘Taishuu’ (70.2%), and this could be attributed to less skin blackening. For the stable production of ‘Dannuri’, it is necessary to maintain proper tree vigor by paying extra attention to the use of organic compost (Registration No. 8504).

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조생종 고품질 단감 ‘미감조생’( Thunb.) 육성
Breeding of ‘Migamjosaeng’ (Diospyros kaki Thunb.) Early-Maturing Sweet Persimmon with High Quality
Seong-Cheol Kim, Ji-Young Son, Yeo-Ok Park, Seong-Tae Choi, Gwang-Hwan Ahn, Eun-Gyeong Kim
Korean. J. Breed. Sci. 2017;49(4):410-413.   Published online December 1, 2017
DOI: https://doi.org/10.9787/KJBS.2017.49.4.410

‘Migamjosaeng’ (Diospyros kaki Thunb.) is a new pollination-variant non-astringent type (PVNA) persimmon cultivar developed by Sweet Persimmon Research Institute of Gyeongnam Agricultural Research & Extension Services. This cultivar was selected among the seedlings obtained from the cross between ‘Mazumotowase-Fuyu’ and ‘Nishimurawase’ in 1995. The seedlings were cultivated from 1996 to 2001 and ‘Migamjosaeng’ was selected in 2002. The tree growth habit and fruit characteristics of ‘Migamjosaeng’ were investigated from 2004 to 2007. The tree growth habit was moderate vigor and showed spreading shape. Flowers bloomed only in female flowers. The flowering time was similar to that of ‘Nishimurawase’ (control) in late May, but the harvest time was about 3 days earlier than ‘Nishimurawase’ in late September. ‘Migamjosaeng’ is characterized by its beautiful orange skin color with round flat shape of fruits. Average fruit size was about 160g. Soluble solids were 16.6°Brix and higher than that of control (14.5°Brix), which contributed to its excellent tastiness. It was noteworthy that occurrence of calyx-end cracked fruits and striped fruit was very rare compared with the control. Therefore, ‘Migamjosaeng’ trees produced marketable fruits much higher than the control tree. Flesh firmness was slightly high and similar to ‘Nishimurawase’.

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