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New Cultivar Developed

식용 고구마 품종 ‘진율미’

이형운1,*, 이준설2, 정미남1, 남상식1, 양정욱2, 김재명1, 안승현2, 송연상2, 한선경2, 황엄지1, 유경단1, 고산1, 이승용1, 이임빈1, 문진영3, 최규환4, 황세구5, 이안수6, 강영식7

‘Jinyulmi’, a Sweetpotato Variety for Table Use

Korean Journal of Breeding Science 2020;52(3):263-271.
Published online: September 1, 2020

1농촌진흥청 국립식량과학원 바이오에너지작물연구소

2농촌진흥청 국립식량과학원

3경상남도농업기술원

4전라북도농업기술원

5충청북도농업기술원

6강원도농업기술원

7충청남도농업기술원

1Bioenergy Crop Research Institute, NICS, RDA, Muan 58545, Republic of Korea

2National Institute of Crop Science, RDA, Wanju 55365, Republic of Korea

3Gyeongsangnam-do Agricultural Research & Extension Services, Jinju 52733, Republic of Korea

4Jeollabuk-do Agricultural Research & Extension Services, Iksan 54591, Republic of Korea

5Chungcheongbuk-do Agricultural Research & Extension Services, Cheongju 28130, Republic of Korea

6Gangwon-do Agricultural Research & Extension Services, Chuncheon 24226, Republic of Korea

7Chungcheongnam-do Agricultural Research & Extension Services, Yesan 32418, Republic of Korea

*Corresponding Author (E-mail: leehu79@korea.kr, Tel:+82-61-450-0141, Fax: +82-61-453-0085)
• Received: March 25, 2020   • Revised: June 15, 2020   • Accepted: July 25, 2020

Copyright © 2020 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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‘Jinyulmi’, a Sweetpotato Variety for Table Use
Image Image Image
Fig. 1 Genealogical diagram of ‘Jinyulmi’.
Fig. 2 Pedigree diagram of ‘Jinyulmi’.
Fig. 3 Raw storage roots of ‘Jinyulmi’ (left) and ‘Yulmi’ (right).
‘Jinyulmi’, a Sweetpotato Variety for Table Use

Mature vine characteristics of ‘Jinyulmi’ on field at harvesting stage.

Variety Leaf shape No. of leaf blade lobes Leaf color Extent of anthocyanin coloration on abaxial veins Anthocyanin coloration

Tip Petiole Internode Node
Jinyulmi Cordate Absent Green Small Medium Absent Absent or weak Absent
Yulmi Cordate Absent Green Small Absent Absent Absent Absent

Storage root characteristics of ‘Jinyulmi’.

Variety Skin color Flesh color General shape Length/width ratio Depth of eyes
Jinyulmi Red Yellow Elliptic 2.8±0.3ns Shallow
Yulmi Light red Light yellow Elliptic 2.4±0.1z Medium

Chroma value of strorage root of ‘Jinyulmi’.

Variety Chroma valuez

Skin Flesh


L a b L a b
Jinyulmi 40.8±0.0** 19.1±1.5ns 8.2±1.1ns 87.1±0.3ns 0.9±0.2ns 29.3±0.5ns
Yulmi 45.6±0.1y 18.9±1.9 11.9±1.9 87.3±0.7 -0.5±0.5 29.8±1.3

Agronomic characteristics, yield components, and yield of ‘Jinyulmi’ on regional yield trial in early season culture.

Variety Sprout appearance
(DAP)z
Date of
sprouting
(DAP)
Vine length
(cm)
Vine weight (MT/ha) No. of marketable storage root per plant Avg. weight of marketable storage root (g) Marketable
storage root yield
(MT/ha)
Jinyulmi 15.0±0.0ns 18.7±0.3ns 76.0±9.1ns 31.6±6.2ns 3.5±0.3** 97.3±5.8** 24.2±2.9ns
Yulmi 15.3±1.7y 21.3±2.3 80.7±18.6 28.4±7.1 2.1±0.2 133.0±8.2 19.2±1.2

Agronomic characteristics and yield components of ‘Jinyulmi’ on regional yield trial in normal season culture.

Variety Vine length
(cm)
Vine weight
(MT/ha)
No. of marketable storage
root per plant
Avg. weight of
marketable storage root (g)
Jinyulmi 163.0±12.9ns 40.1±2.6ns 3.6±0.1* 137.0±4.6*
Yulmi 186.3±23.9z 40.3±5.3 2.3±0.1 178.3±6.4

Reaction to fusarium wilt and root-knot nematode (Meloidogyne incognita) of ‘Jinyulmi’.

Variety Fusarium wilt Root-knot nematodez No. of egg mass per plant
Jinyulmi Ry MR 17.7
Yulmi - S (Susceptible check) 90.8
Juhwangmi - R (Resistant check) 0
Singeonmi R (Resistant check) - -
Sinjami MR (Moderately resistant check) - -
Borami S (Susceptible check) - -

Quality characteristics of storage root of ‘Jinyulmi’.

Variety Dry matter content
(%)
Texture of steamed
storage root
Total sugar contents
(g/100 g dw)
Sweetnessz °Brix of steamed
storage root
Palatability
(1-5)


Raw Steaming Raw Steaming
Jinyulmi 32.7±1.8ns Intermediate 8.8±1.1* 22.8±4.1ns 8.8±1.1* 13.1±2.4ns 27.3±1.5ns 3.6
Yulmi 34.4±1.6y Dry 4.9±0.8 25.0±2.7 4.9±0.7 11.6±1.5 30.3±1.2 3.0

Marketable storage root yield (MT/ha) of ‘Jinyulmi’ on preliminary and advanced yield trials.

Variety Marketable storage root yield (MT/ha)
2012 2013 Mean Indexz
Jinyulmi 32.1 15.9 24.0ns 158
Yulmi 17.2 13.1 15.2 100

Yield of storage root in normal season culture in Muan, Jeollanam-do province.

Variety Marketable storage
root yield (MT/ha)
Quantity by weight of storage roots (MT/ha)

Over 250 g 250~150 g 150~80 g 80~50 g
Jinyulmi 34.4* (190) 13.4ns (182) 9.4* (198) 8.2ns (197) 3.4ns (186)
Yulmi 18.1 (100)z 7.3 (100) 4.8 (100) 4.1 (100) 1.9 (100)

Marketable storage root yield (MT/ha) of ‘Jinyulmi’ on regional yield trial in normal season culture at six regions.

Region Jinyulmi (Mt/ha) Indexz Yulmi (MT/ha)


2014 2015 2016 Mean 2014 2015 2016 Mean
Gangreung 37.4 20.6 30.8 29.6 98 37.1 26.3 27.1 30.1
Cheongju 29.2 21.7 25.9 25.6 112 20.7 22.7 25.2 22.8
Yesan - 37.6 32.4 35.0 126 - 27.1 28.5 27.8
Iksan 14.2 35.5 39.0 29.5 101 22.7 37.3 27.2 29.1
Muan 31.0 40.1 32.0 34.4 190 13.2 21.1 20.0 18.1
Jinju 16.9 18.7 25.7 20.4 115 14.4 14.2 24.5 17.7

Mean 25.7 29.0 31.0 28.6ns 120 21.6 24.8 25.4 23.9
Table 1 Mature vine characteristics of ‘Jinyulmi’ on field at harvesting stage.
Table 2 Storage root characteristics of ‘Jinyulmi’.

zMean±SE (n=3).

Not significant (ns) in the t-test.

Table 3 Chroma value of strorage root of ‘Jinyulmi’.

zL, Lightness: black=0, white=100; a, redness to greenness: green=-80, red=+80; b, yellowness to blueness: blue=-80, yellowness=+80.

yMean±SE (n=3).

Not significant (ns) in the t-test, while **significant at p<0.01.

Table 4 Agronomic characteristics, yield components, and yield of ‘Jinyulmi’ on regional yield trial in early season culture.

zDAP: Days after planting.

yMean±SE (n=3).

Not significant (ns) in the t-test, while **significant at p<0.01.

Table 5 Agronomic characteristics and yield components of ‘Jinyulmi’ on regional yield trial in normal season culture.

zMean±SE (n=3).

Not significant (ns) in the t-test, while *significant at p<0.05.

Table 6 Reaction to fusarium wilt and root-knot nematode (Meloidogyne incognita) of ‘Jinyulmi’.

zResistance was determined by number of egg masses per plant. R: ≤10% of a susceptible cultivar (Yulmi), MR: 11~25%, S: >25%.

yR: Resistance, MR: Moderate resistance, S: Susceptibility.

Table 7 Quality characteristics of storage root of ‘Jinyulmi’.

zFructose×1.17+Glucose×0.74+Sucrose×1.00+Maltose×0.33

yMean±SE (n=3).

Not significant (ns) in the t-test, while *significant at p<0.05.

Table 8 Marketable storage root yield (MT/ha) of ‘Jinyulmi’ on preliminary and advanced yield trials.

z(Yield of ‘Jinyulmi’ / yield of ‘Yulmi’)×100.

Not significant (ns) in the t-test.

Table 9 Yield of storage root in normal season culture in Muan, Jeollanam-do province.

z(Yield of ‘Jinyulmi’ / yield of ‘Yulmi’)×100.

Not significant (ns) in the t-test, while *significant at p<0.05.

Table 10 Marketable storage root yield (MT/ha) of ‘Jinyulmi’ on regional yield trial in normal season culture at six regions.

z(Yield of ‘Jinyulmi’ / yield of ‘Yulmi’)×100.

Not significant (ns) in the t-test.