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쓰러짐과 불마름병에 강한 선비잡이콩 ‘새들’

서정현*, 강범규, 김준회, 허수빈, 한원영, 이영훈, 박기림, 김기영

Lodging and Bacterial Pustule Resistant Soybean Cultivar ‘Saedeul’ with a Saddle-Patterned Seed Coat

Korean Journal of Breeding Science 2025;57(2):189-197.
Published online: June 1, 2025

농촌진흥청 국립식량과학원

National Institute of Crop Science (NICS), RDA, Wanju 55365, Republic of Korea

*Corresponding to Jeong Hyun SeoTEL. +82-55-350-1236E-mail. next0501@korea.kr
• Received: February 5, 2025   • Revised: February 18, 2025   • Accepted: February 18, 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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Citations to this article as recorded by  Crossref logo
  • Lodging and Bacterial Pustule Resistant Soybean Cultivar ‘Kkari1ho’ with a Net-Like Cracking Seed Coat
    Jihee Park, Jeong Hyun Seo, Beom Kyu Kang, Jun Hoi Kim, Su Vin Heo, Won Young Han, Myoung Hee Lee, Ga Eun Kim, Tae Joung Ha, Jung Sook Sung, Ki Young Kim
    Korean Journal of Breeding Science.2026; 58(2): 209.     CrossRef

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Lodging and Bacterial Pustule Resistant Soybean Cultivar ‘Saedeul’ with a Saddle-Patterned Seed Coat
Korean. J. Breed. Sci.. 2025;57(2):189-197.   Published online June 1, 2025
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Lodging and Bacterial Pustule Resistant Soybean Cultivar ‘Saedeul’ with a Saddle-Patterned Seed Coat
Korean. J. Breed. Sci.. 2025;57(2):189-197.   Published online June 1, 2025
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Lodging and Bacterial Pustule Resistant Soybean Cultivar ‘Saedeul’ with a Saddle-Patterned Seed Coat
Image Image
Fig. 1 Pedigree of ‘Saedeul’.
Fig. 2 Comparison of individual plants and seeds between ‘Saedeul’ (left) and ‘Cheongja3ho’ (right).
Lodging and Bacterial Pustule Resistant Soybean Cultivar ‘Saedeul’ with a Saddle-Patterned Seed Coat

Qualitative characteristics of ‘Saedeul’.

Cultivar Growth habit Leaflet shape Flower color Pubescence color Seed coat color Cotyledon color Seed shape
Saedeul Determinate Oval Purple Brown Saddle type (Brown/Yellow) Yellow Spherical
Cheongja3ho Determinate Oval Purple Brown Black Yellow Spherical

Mean value of quantitative characteristics of ‘Saedeul’ in the regional yield trial from 2018 to 2020.

Cultivar Flowering date Maturity date Height (cm) No. of nodes No. of branches No. of pods First pod height (cm) 100-seed weight (g)
Saedeul 8.11 10.28 66 17 2 50 17 27.9
Cheongja3ho 8.3 10.21 69 15 4 40 13 35.5

t-valuez 7.56** 3.41** -0.90ns 2.63ns -5.34** 2.92** 2.25* -9.24**

zns denotes there was no significant difference and * and ** denotes there was significant difference between ‘Saedeul’ and ‘Cheongja3ho’ by student t-test at 0.05 and 0.01.

The resistance of ‘Saedeul’ to the diseases of soybean evaluated from 2018 to 2020.

Cultivar Bacterial pustule (0-9)z Soybean mosaic virusy Lodging (1-9)x Shattering Root rot (%)v




Field Inoculation Inoculation (G6H) Field (0-9)z Normal culture Dense culture Field Field (1-9)x Ratio by oven test (%)w
Saedeul 1 1 Mo / N 4 2 3 2 2 67.9 0
Cheongja3ho 1 2 - / M 3 2 5 3 5 98.7 0

z(0) Tolerant~(9) Susceptible.

yReaction of inoculated leaf/upper leaves, (-) No symptom, (Mo) Mottle, (N) Necrosis, (M) Mosaic.

x(1) Tolerant~(9) Susceptible.

wthe ratio of shattered pod by dry oven test at 40℃ for 48 hr.

vRoot rot and damaged seed that were naturally infected in the field were estimated.

Seed quality-related characteristics of ‘Saedeul’ evaluated from 2018 to 2020

Cultivar Crude protein (%) Crude oil (%) Ratio of water absorption (%) Sugar content (㎎/g)


2 hr 6 hr 12 hr Stachyose Raffinose Sucrose Glucose Galactose Fructose Total
Saedeul 39.0 18.8 161 207 226 25.1 6.0 44.5 3.1 1.2 0.5 80.4
Cheongja3ho 42.3 16.4 168 214 233 21.7 7.4 49.2 3.2 1.6 0.5 83.6

t-valuez -3.38* 5.43** - - - 1.68ns -0.90ns -0.63ns -0.13ns -1.29ns -0.05ns -0.09ns

Cultivar Isoflavone content (㎍/g)

Saedeul Daidzin Glycitin Genistin Daidzein Glycitein Genistein Malonyl-daidzin Malonyl-glycitin Malonyl-genistin Acetyl- daidzin Acetyl- glycitin Acetyl- genistin Total

Cheongja3ho 275 36 352 142 21 125 1,688 113 1,208 637 2 67 4,668

t-valuez 86 19 143 27 10 56 679 60 633 384 4 20 2,115
4.42* 2.80ns 3.25ns 1.73ns 1.00ns 2.23ns 9.86** 12.3** 0.85ns 0.35ns -0.62ns 0.69ns 10.9**

zns denotes there was no significant difference and * and ** denote there was significant difference between ‘Saedeul’ and ‘Cheongja3ho’ by student t-test at 0.05 and 0.01.

Yield of ‘Saedeul’ in the preliminary and advanced yield trials.

Cultivar Yield (kg/10a) Indexx

PYT (’16)z AYT (’17)y Mean
Saedeul 364 321 342 122
Cheongja3ho 352 210 281 100

t-valuew 1.22ns 4.11* 2.09ns -

z(PYT) preliminary yield trial

y(AYT) advanced yield trial

x(Index) mean yield of ‘Saedeul’/mean yield of ‘Cheongja3ho’×100.

wns denotes there was no significant difference and * denotes there was significant difference between ‘Saedeul’ and Cheongja3ho’ by student t-test at 0.05.

Yield of ‘Saedeul’ in the regional yield trials at 7 locations.

Location Saedeul Cheongja3ho t-valuey


2018 2019 2020 Mean Indexz 2018 2019 2020 Mean
Suwon 305 267 259 277 97 298 285 277 287 -0.63ns
Yeoncheon 273 226 162 220 97 292 233 155 227 -0.12ns
Chuncheon 231 313 230 258 106 230 274 226 243 0.47ns
Naju 359 268 252 293 97 334 272 298 301 -0.22ns
Dalseong 221 267 323 270 127 189 219 229 212 1.82ns
Yesan 234 188 250 224 114 221 181 189 197 1.21ns
Daegu 297 264 302 288 129 218 227 228 224 5.13*
Mean 274 256 254 261 108 255 242 229 242 1.40ns

z(Index) mean yield of ‘Saedeul’ mean yield of ‘Cheongja3ho’×100

yns denotes there was no significant difference and * denotes significantly different between ‘Saedeul’ and ‘Cheongja3ho’ at 0.05 by student t-test.

Table 1 Qualitative characteristics of ‘Saedeul’.
Table 2 Mean value of quantitative characteristics of ‘Saedeul’ in the regional yield trial from 2018 to 2020.

zns denotes there was no significant difference and * and ** denotes there was significant difference between ‘Saedeul’ and ‘Cheongja3ho’ by student t-test at 0.05 and 0.01.

Table 3 The resistance of ‘Saedeul’ to the diseases of soybean evaluated from 2018 to 2020.

z(0) Tolerant~(9) Susceptible.

yReaction of inoculated leaf/upper leaves, (-) No symptom, (Mo) Mottle, (N) Necrosis, (M) Mosaic.

x(1) Tolerant~(9) Susceptible.

wthe ratio of shattered pod by dry oven test at 40℃ for 48 hr.

vRoot rot and damaged seed that were naturally infected in the field were estimated.

Table 4 Seed quality-related characteristics of ‘Saedeul’ evaluated from 2018 to 2020

zns denotes there was no significant difference and * and ** denote there was significant difference between ‘Saedeul’ and ‘Cheongja3ho’ by student t-test at 0.05 and 0.01.

Table 5 Yield of ‘Saedeul’ in the preliminary and advanced yield trials.

z(PYT) preliminary yield trial

y(AYT) advanced yield trial

x(Index) mean yield of ‘Saedeul’/mean yield of ‘Cheongja3ho’×100.

wns denotes there was no significant difference and * denotes there was significant difference between ‘Saedeul’ and Cheongja3ho’ by student t-test at 0.05.

Table 6 Yield of ‘Saedeul’ in the regional yield trials at 7 locations.

z(Index) mean yield of ‘Saedeul’ mean yield of ‘Cheongja3ho’×100

yns denotes there was no significant difference and * denotes significantly different between ‘Saedeul’ and ‘Cheongja3ho’ at 0.05 by student t-test.