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수확량이 많고 속껍질이 잘 벗겨지는 밤나무 ‘이피1호’

유희원1, 김철우1,*, 이욱1, 박윤미2, 정혜수1, 김용현1

‘EePi No.1’: A High-yielding Cultivar of Chestnut (Castanea crenata Siebold & Zucc.) with High Pellicle Removability

Korean Journal of Breeding Science 2025;57(2):199-204.
Published online: June 1, 2025

1국립산림과학원 산림생명자원연구부 산림특용자원연구과

2국립산림과학원 연구기획과

1Div. of Special Forest Resources, Dept. of Forest Bio-Resources, National Institute of Forest Science, 39 Onjeong-Ro, Kwonseon-Gu, Suwon 16631, Republic of Korea

2Div. of Research Planning and Coordination, National Institute of Forest Science, 57 Hoegi-Ro, Dongdaemun-Gu, Seoul 02455, Republic of Korea

*Corresponding toChulwoo KimTEL. +82-31-290-1153E-mail. futuretree@korea.kr
• Received: February 5, 2025   • Revised: February 16, 2025   • Accepted: February 26, 2025

Copyright © 2025 by the Korean Society of Breeding Science

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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  • Variation in Floral Nectar Traits of Four Chestnut (Castanea spp.) Cultivars: Implications for Pollinators and Apiculture
    Ji-Min Park, Hyun-Jun Kim, Sang-Jae Won, Sung-Joon Na
    Agriculture.2025; 15(22): 2358.     CrossRef

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‘EePi No.1’: A High-yielding Cultivar of Chestnut (Castanea crenata Siebold & Zucc.) with High Pellicle Removability
Korean. J. Breed. Sci.. 2025;57(2):199-204.   Published online June 1, 2025
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‘EePi No.1’: A High-yielding Cultivar of Chestnut (Castanea crenata Siebold & Zucc.) with High Pellicle Removability
Korean. J. Breed. Sci.. 2025;57(2):199-204.   Published online June 1, 2025
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‘EePi No.1’: A High-yielding Cultivar of Chestnut (Castanea crenata Siebold & Zucc.) with High Pellicle Removability
Image Image
Fig. 1 Comparison of fructification and fruit from between ‘EePi No.1’ (A, C) and the control cultivar ‘Daebo’ (B, D).
Fig. 2 Appearance of Bud and leaf characteristics and fruit of ‘EePi No.1’.
‘EePi No.1’: A High-yielding Cultivar of Chestnut (Castanea crenata Siebold & Zucc.) with High Pellicle Removability

Breeding history of ‘EePi No.1’.

year 2000 2001~2006 2007 2008~2011 2012-2015 2015
Breeding stage Artificial crossing Seedling First selection Clone propagation
and traits stability test
Second selection and propagation Characteristic trial Final selection
Riheiguri×Ganne RG13 (EePi No.1)

Number of lines 26 12 4 1

Growth properties characteristics of ‘EePi No.1’.

Cultivar Tree vigor Tree form One-year-old shoot Bud break

Color Shape of lenticel Presence of trichome
EePi No.1 Vigorous Semi-erect Red brown Orbicular and elliptical Absent May. 2
Daebo (control) Vigorous Semi-erect Gray brown Orbicular and oblate Present Apr. 28

Cultivar Fully developed leaf

Color of
lower side
Shape of margin Length of blade
(mm)
No. of venation
(ea)
Length/width ratio Length of petiole (mm)

EePi No.1 Light green Acute 17.26 21.40* 4.10* 1.65
Daebo (control) Whitish Flare shape 20.30* 16.90 3.14 2.30*

Phenological and fructification characteristics of ‘EePi No.1’.

Cultivar Time of beginning of male flowering Time of beginning of female flowering Time of maturity of consumption No. of bearing branch per bearing mother branch No. of total burr per bearing mother branch No. of burr per bearing branch Number of nuts per burr
EePi No.1 Jun. 14 Jun. 12 Oct. 1 2.70 3.20 1.60 1.80

Daebo
(control)
Jun. 19 Jun. 14 Sep. 25 2.85 4.61 1.73 1.88

Fruit characteristics of ‘EePi No.1’.

Cultivar Bur thickness Bur pickles length Nut drop type Nut shape Nut skin color Pubescence position Size of hilum
EePi No.1 Medium Short Bur Transeverse ellipsoid Brown Top Large
Daebo

(control)
Thick Long Nut Transeverse ellipsoid Light brown Middle Medium
Cultivar Nut weight (g) Soluble solid content (%) Kernel hardness
(kg⋅cm²)
Pericarp split rate (%) Occurrence of poly- embryonic nuts (%) Pellicle thickness Pellicle removability (%)
EePi No.1 24.00* 14.26 9.22 3.90 5.00 thin 93.50
Daebo

(control)
20.50 14.56 10.76 5.10 0.20 medium 86.40
Table 1 Breeding history of ‘EePi No.1’.
Table 2 Growth properties characteristics of ‘EePi No.1’.

*significant at p<0.05, by t-test respectively (n=20).

Table 3 Phenological and fructification characteristics of ‘EePi No.1’.
Table 4 Fruit characteristics of ‘EePi No.1’.

*significant at p<0.05, by t-test respectively (n=20).