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"Kyeong-Bok Ma"

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"Kyeong-Bok Ma"

New Cultivar Developeds

껍질째 먹는 고품질 완전단감 ‘연수’ 개발
Breeding of High Quality and Peel-eating Sweet Persimmon ‘Yeonsu’
Kyeong-Bok Ma, Byul-Ha-Na Lee, Hye-Gyoung Yoo
Korean. J. Breed. Sci. 2024;56(3):337-343.
Published online September 1, 2024
DOI: https://doi.org/10.9787/KJBS.2024.56.3.337

A new persimmon (Diospyros kaki L. Thunb.) cultivar ‘Yeonsu’ was derived from a cross between ‘Ro-19’ and ‘Taishu’ in 2009 and finally selected in 2016. The average maturing date was October 20th in Yeoung-am province. ‘Yeonsu’ has a medium average fruit size (235 g) and high soluble solids (17.0 °Bx). The flesh taste was good with soft texture and juice. The fruit shape was very wide ovule when viewed from the side and the fruit's skin color was yellow-orange. Physiological disorders, including fruit cracking or skin fine cracking rarely occurred, but intense sunlight may cause pericarp blackening (Registration No. 8918).

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조생종 고품질 완전단감 ‘원추’ 육성
Breeding of Early Maturing and High-Quality Sweet Persimmon: ‘Wonchu’
Kyeong-Bok Ma, Sang-Jin Yang, Ye-Seul Jo, Kwang-Sik Cho, Sam-Seok Kang
Korean. J. Breed. Sci. 2021;53(4):495-499.
Published online December 1, 2021
DOI: https://doi.org/10.9787/KJBS.2021.53.4.495

In 2005, a new persimmon (Diospyros kaki L. Thunb.) cultivar ‘Wonchu’ was derived by crossing ‘Shinsyu’ and ‘Taishu’, and it was finally selected in 2015. In the Yeoung-am province, the average maturing date of the fruit of this cultivar was October 3rd. The quantitative characteristics of the fruit of ‘Wonchu’ include a larger size (324 g on average) and presence of high soluble-solids (approximately 15.1 °Brix). The flesh of the fruit is juicy, has a crispy texture, and tastes good. The shape of the fruit is round oblate (when looked from the side), and the color of its skin is orange. Physiological disorders, such as fruit cracking or fine skin cracking, rarely occur (Registration No. 8579).

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중⋅만생종 고품질 완전단감 ‘감풍’ 육성
‘Gampung’, Middle and late Maturing, High Quality Sweet Persimmon
Kyeong-Bok Ma, Sang-Jin Yang, Ye-Seul Jo, Kwang-Sik Cho, Sam-Seok Kang
Korean. J. Breed. Sci. 2020;52(4):485-488.   Published online December 1, 2020
DOI: https://doi.org/10.9787/KJBS.2020.52.4.485

A new persimmon (Diospyros kaki L. Thunb.) cultivar, ‘Gampung’, a progeny derived from the cross between ‘Daeandangam’ and ‘Taishu’ in 2004, was finally selected in 2013. Fruits of ‘Gampung’ were available for harvest on October 24 in the Yeong-am area. It had a very large fruit size of 413 g on average, and high soluble solids of approximately 14.7 °Bx. Its flesh taste was good, and it had a crispy texture and rich juice. The shape of the fruit was round oblate from the side view, and it had orange skin. Physiological disorders such as fruit cracking or skin fine cracking rarely occurred in this cultivar (Registration No. 8030).

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조생종 고품질 완전단감 ‘원미’ 육성
‘Wonmi’, an Early Maturing, High-Quality, Sweet Persimmon Cultivar
Kyeong-Bok Ma, Sang-Jin Yang, Ye-Seul Jo, Kwang-Sik Cho, Sam-Seok Kang
Korean. J. Breed. Sci. 2020;52(3):258-262.   Published online September 1, 2020
DOI: https://doi.org/10.9787/KJBS.2020.52.3.258

AbstractIn 2014, a new high-quality, pollination-constant, non-astringent persimmon (Diospyros kaki L. Thunb.) cultivar, ‘Wonmi’, a breeding of ‘Fuyu’ and ‘Taishu’ from 2005, was developed. ‘Wonmi’ fruit were harvested on October 8 in Yeongam, South Korea. The fruit are medium-sized (220 g on average), with a high amount of soluble solids (15.1 °Bx). The juicy flesh has a pleasant taste and crispy texture. The fruit shape is round oblate, and the skin color is orange with a graceful appearance. Physiological disorders, such as stylar-end or fine skin cracking, rarely occur in this cultivar (Registration No. 7724).

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조생종 추석용 단감 ‘초시’ 육성
‘Chosi’, Early Maturing Sweet Persimmon (Diospyros kaki Thunb.) for ‘Chuseok’
Kyeong-Bok Ma, Kwang-Sik Cho, Sam-Seok Kang, Yoon-Kyeong Kim, Hae-Sung Hwang, Jang-Jeon Choi, Jeom-Hwa Han
Korean. J. Breed. Sci. 2019;51(4):424-427.   Published online December 1, 2019
DOI: https://doi.org/10.9787/KJBS.2019.51.4.424

A persimmon (Diospyros kaki L. Thunb.) cultivar, ‘Chosi’, which was a cross between ‘Johongsi’ and ‘Nishimurawase’ in 2000, was finally selected in 2010. ‘Chosi’ persimmon fruits were harvested in Sept. 19 in Naju, with a medium fruit size of 161 g, on average, and high soluble solids of approximately 15.3 ºBx. The flesh tastes good, with a crispy texture, and the juice is rich. The shape of the fruit is round oblate, and the skin color is orange; the appearance is graceful. Physiological disorders, such as stylar-end cracking or skin fine cracking, rarely occur in this cultivar. (Registration No. 7075)

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수분수용 고품질 떫은감 ‘파트너’( Thunb.) 육성
Breeding of ‘Partner’ (Diospyros kaki Thunb.) Astringent Persimmon with High Quality as a Pollinizer
Kwang-Sik Cho, Il-Sheob Shin, Sam-Seok Kang, Yoon-Kyeong Kim, Jin-Ho Choi, Myung-Su Kim, Kyeong-Bok Ma
Korean. J. Breed. Sci. 2015;47(3):294-298.   Published online September 30, 2015
DOI: https://doi.org/10.9787/KJBS.2015.47.3.294

In order to select pollinizer varieties of high fruit qualities with large sized and high soluble solid contents, ‘Nishimurawase’ was crossed with ‘Johongsi’ at the Pear Research Institute, National Institute of Horticultural & Herbal Science in 2000. Among these crossed seedlings, ‘00-16-121’ was selected primarily in 2007, and it was finally selected since it was worthy of not only a pollinizer but also ripen and dried persimmon and named ‘Partner’ in 2009. ‘Partner’ shows intermediate in growth habit and semi-spreading tree shape. It has plenty of male flowers and rich pollen amount with about 380 mg per one hundred flowers. The average optimum harvest time of ‘Partner’ was 144 days after full bloom and it matured around one week earlier than ‘Zenzimaru’ and three weeks later than ‘Nishimurawase’. The fruit is elliptic in shape and orange in skin color. Average fruit weight was 224 g, and soluble solids content was 18.8°Brix.

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