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New Cultivar Developed

‘신동진’ 유전배경에 벼흰잎마름병 저항성 유전자 이 도입된 복합내병성 중만생 벼 ‘참동진’

박현수1,*, 백만기1, 김우재1, 서정필1, 이점호1, 정지웅1, 김춘송1, 정오영1, 이덕렬2, 이창민1, 정종민3, 모영준4, 하수경1, 이동규1, 지현소5, 서정환1, 박재령1, 이현숙1, 박송희1, 진민아1, 김기영1

The Multiple Disease-resistant, Mid-late Maturing Rice Cultivar ‘Chamdongjin’, Carrying the Bacterial Blight Resistance Gene Xa21, with the Genetic Background of ‘Sindongjin’

Korean Journal of Breeding Science 2023;55(1):86-102.
Published online: March 1, 2023

1농촌진흥청 국립식량과학원 작물육종과

2전라북도농업기술원 농업환경과

3농촌진흥청 대변인실

4전북대학교 농업생명과학대학

5농촌진흥청 국립농업과학원 유전자공학과

1Crop Breeding Division, National Institute of Crop Science, RDA, Wanju 55365, Republic of Korea

2Climate Change Response Division, Jeonbuk Agricultural Research & Extension Services, Iksan 54591, Republic of Korea

3Spokesperson, Rural Development Administration, Jeonju 54875, Republic of Korea

4College of Agriculture & Life Science, Jeonbuk National University, Jeonju 54896, Republic of Korea

5Gene Engineering Division, National Institute of Agricultural Science, RDA, Jeonju 54874, Republic of Korea

*Corresponding Author (E-mail: mayoe@korea.kr, Tel: +82-63-238-5214, Fax: +82-63-238-5205)
• Received: January 27, 2023   • Revised: January 27, 2023   • Accepted: February 7, 2023

Copyright © 2023 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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  • ‘Amissal’: A Region-specific, Mid-late Maturing Long-grain Japonica Rice Cultivar
    Hyun-Su Park, Chang-Min Lee, Ki-Young Kim, O-Young Jeong, Ji-Ung Jeung, Su-Keyong Ha, Sang-Chul Park, Sang-Hyeok Lee, Jung-Pil Suh, Mina Jin, Hyun-Sook Lee, Jeonghwan Seo, Songhee Park, Jae-Ryoung Park, Kyeongmin Kang
    Korean Journal of Breeding Science.2025; 57(4): 547.     CrossRef
  • QTL Analysis for Yield-Related Traits Using the Recombinant Inbred Lines Derived From a Cross Between ‘Chamdongjin’ and ‘Younghojinmi’
    Hyun-Su Park, Jeonghwan Seo, Songhee Park, Jae-Ryoung Park, Chang-Min Lee, Mina Jin, O-Young Jeong
    Korean Journal of Breeding Science.2024; 56(1): 31.     CrossRef
  • QTL Analysis for Pre-Harvest Sprouting and Low-Temperature Germinability Using Recombinant Inbred Lines Derived from a Cross between ‘Chamdongjin’ and ‘Younghojinmi’
    Hyun-Su Park, Jeonghwan Seo, Heyonso Ji, Gileung Lee, Chang-Min Lee, Jae-Ryoung Park, Songhee Park, Keon-Mi Lee, Mina Jin, O-Young Jeong
    Korean Journal of Breeding Science.2024; 56(2): 79.     CrossRef
  • Mid-Late Maturing Glutinous Rice Cultivar ‘JJ644wx’ with Multiple Disease Resistance and Lodging Tolerance
    Hyun-Su Park, Chang-Min Lee, O-Young Jeong, Jung-Pil Suh, Jeonghwan Seo, Songhee Park, Keon-Mi Lee, Jae-Ryoung Park, Su-Kyung Ha, Hyun-Sook Lee, Ki-Young Kim
    Korean Journal of Breeding Science.2024; 56(3): 319.     CrossRef

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The Multiple Disease-resistant, Mid-late Maturing Rice Cultivar ‘Chamdongjin’, Carrying the Bacterial Blight Resistance Gene Xa21, with the Genetic Background of ‘Sindongjin’
Korean. J. Breed. Sci.. 2023;55(1):86-102.   Published online March 1, 2023
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The Multiple Disease-resistant, Mid-late Maturing Rice Cultivar ‘Chamdongjin’, Carrying the Bacterial Blight Resistance Gene Xa21, with the Genetic Background of ‘Sindongjin’
Korean. J. Breed. Sci.. 2023;55(1):86-102.   Published online March 1, 2023
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The Multiple Disease-resistant, Mid-late Maturing Rice Cultivar ‘Chamdongjin’, Carrying the Bacterial Blight Resistance Gene Xa21, with the Genetic Background of ‘Sindongjin’
Image Image Image Image Image Image
Fig. 1 Genealogical diagram of ‘Chamgdongjin’.
Fig. 2 Pedigree diagram of ‘Chamdongjin’.
Fig. 3 Plant type at maturing stage (A) and grain shape of rough, brown, and milled rice (B, C).
Fig. 4 Resistance reaction of ‘Chamdongjin’ against bacterial blight (A, B) and blast (C, D). Resistance to bacterial blight races K1 (HB1013 isolate), K2 (HB1014), K3 (HB1015), and K3a (HB1009) (A) and field resistance by inoculation of K3a race (B). Resistance to leaf blast at upland blast nursery (C) and field resistance at blast outbreak site in Buan-gun, Jeollabuk-do in 2021 (D).
Fig. 5 PCR analysis to confirm disease resistance genes (A) and grain-related genes (B) using gene specific DNA marker. Disease resistance genes, Xa3, Xa21, and Stvb-i were confirmed by PCR products amplified with primer, 9643.T4 (cleaved by Taqα Ⅰ), U1/I1, and InDel 7, respectively. Grain-related genes, GW2, GS3, and qSW5 were confirmed by PCR products amplified with primer, GW2-Hpa Ⅰ (cleaved by Hpa Ⅰ), GS3-Pst Ⅰ (Pst Ⅰ), and N1212del, respectively. M: DNA size marker, 1: ‘Nampyeong’, 2: ‘Sindongjin’, 3: ‘Peyongan’, 4: ‘Dami’, 5: ‘HR27195’, 6: ‘Chamdongjin’.
Fig. 6 Genetic background analysis of ‘Chamdongjin’. Graphical genotype based on 787 KASP markers (A). The horizontal black lines on the left and right of each chromosome indicate to the physical position and marker, respectively. White and red boxes indicate regions homozygous for ‘Sindongjin’ and ‘HR27195’, respectively. Black star indicates the physical position of Xa21 (Os11g0559200, Chr.11: 20,802,978..20,806,262). Phylogenetic tree of 36 varieties based on 347 KASP markers (B). Red circular dotted line marks the location of ‘Chamdongjin’ (CDJ). The abbreviation of the varieties is as follows. SDJ: ‘Sindongjin’, DM: ‘Dami’, PA: ‘Pyeongan’, BRC: ‘Boramchan’, YHJN: ‘Younghojinmi’, JN: ‘Junam’, UK: ‘Unkwang’, JP: ‘Jopyeong’, SK: ‘Samkwang’, HY: ‘Hwayeong’, HC: ‘Hwacheong’, DA: ‘Dongan’, NP: ‘Nampyeong’, SNR: ‘Saenuri’, HIAM: ‘Hiami’, KSHKR: ‘Koshihikari’, DJ: ‘Dongjin’, OD: ‘Odae’, IP: ‘Ilpum’, GH: ‘Giho’, JU: ‘Joun’, PCS: ‘Pecos’, DWD: ‘Dawdam’, CPRS: ‘Cypress’, HAR2: ‘Hanareum2’.
The Multiple Disease-resistant, Mid-late Maturing Rice Cultivar ‘Chamdongjin’, Carrying the Bacterial Blight Resistance Gene Xa21, with the Genetic Background of ‘Sindongjin’

Segregation ratio of disease resistance genes of BC1F1 plants by molecular marker analysis.

Resistance gene No. of plants Expected ratio χ2 p-value
RRz Rr rr total
Xa21 - 40 53 93 1:1 1.817 0.178
Stvb-i 51 42 - 93 1:1 0.871 0.351

Segregation ratio of resistance reaction of BC1F2 population against bacterial blight K3a race by bioassay.

F2 family No. of plants Expected χ2 p-value Selected plants
Resistant Susceptible Total ratio
R4 81 31 112 3:1 0.429 0.513 20
R6 85 27 112 3:1 0.048 0.827 20
R21 80 32 112 3:1 0.762 0.383 10
R58 20 8 28 3:1 0.191 0.663 10
R74 40 16 56 3:1 0.381 0.537 10
Total 306 114 420 3:1 1.029 0.311 70

Major agronomic traits and yield components at yield trial in Joenju during 2017-2020.

Cultivar Heading date
(DASz)
Culm length
(cm)
Panicle length
(cm)
No. of panicles per hill No. of spikelets per panicle Ratio of ripened grain (%) 1,000-grain weight of brown rice (g) Brown/rough rice ratio
(%)
Yield
(kg/10a)
Chamdongjin 107nsy 75ns 23ns 11ns 109ns 87.3ns 28.4ns 83.7ns 526ns
Sindongjin 107 76 23 11 103 87.5 28.4 84.0 549

Major agronomic traits and yield components at local adaptability test in 2020.

Cultivar Heading date
(DASz)
Culm length
(cm)
Panicle length
(cm)
No. of panicles per hill No. of spikelets per panicle Ratio of ripened grain (%) 1,000-grain weight of brown rice (g) Brown/rough rice ratio
(%)
Yield
(kg/10a)
Chamdongjin 106ay 79a 21a 11b 101a 90.9a 26.9a 84.2a 540a
Sindongjin 105a 77a 21a 11b 100a 88.7a 26.9a 84.7a 536a
Nampyeong 106a 76a 19b 13a 88b 91.4a 20.8b 82.7b 507b

Response to physiological and abiotic stresses.

Cultivar Occurrence of wilting Leaf senescence at maturing Cold tolerancez Low tem. germinationy (%) Lodging Pre-harvest sproutingx (%)
Seedling stage
(1-9)
Heading delay
(day)
Grain fertility
(%)
Phenotypic acceptability
(1-9)
Breaking strength
(g)
Index
Chamdongjin Tolerance Late 4 6 40.0 7 77.0 1,125 157 63.4
Sindongjin Tolerance Late 5 7 38.7 7 74.3 1,023 148 61.3
Nampyeong Tolerance Late 5 7 28.6 7 61.8 1,013 121 3.3

Resistance reaction to bacterial blight.

Cultivar Race Field resistance test Resistance gene
K1 K2 K3 K3a
Chamdongjin Rz R R R R Xa3+Xa21
Sindongjin R R R S S Xa3
Nampyeong S S S S - unknown

Resistance reaction to bacterial blight at field resistance test by inoculation of K3a race.

Cultivar Control K3a inoculation
1,000-grain weight of brown rice
(g)
Ration of ripened grain
(%)
Yield
(kg/10a)
Perfect kernel of brown rice
(%)
Glossiness
(Toyo-value)
1,000-grain weight of brown rice
(g)
Ration of ripened grain
(%)
Yield
(kg/10a)
Perfect kernel of brown rice
(%)
Glossiness
(Toyo-value)
Chamdongjin(A) 27.6ns 87.7ns 496ns 66.7ns 82.4ns 27.6ns 87.5** 482** 66.4** 80.8**
Sindongjin(B) 27.7 88.0 511 65.0 81.6 26.6 73.7 370 59.0 75.5
A/B(%) 100 100 97 103 101 104 119 130 113 107

Resistance reaction to blast disease.

Cultivar Reaction to leaf blast at upland blast nursery Reaction to panicle blast at field test
No. of tested sites (11) Rate of infected panicles (%)
Rz M S Mean Jeonju Milyang Yeoju Yesan Jinju Mean
Chamdongjin 4 6 1 4.3 0.0 0.0 0.0 0.0 0.0 0.0
Sindongjin 5 5 1 3.2 2.3 0.0 13.0 5.2 0.0 4.1
Nampyeong 5 4 2 3.8 5.6 0.0 8.8 0.0 0.0 2.9

Reaction to virus disease and insect pests.

Cultivar Virus diseases Resistance to insects
Stripe Dwarf BPHz SBPH
Chamdongjin Ry S S S
Sindongjin R S S S
Nampyeong R R S S

Characteristics related to grain shape and grain quality.

Cultivar Brown rice Grain-related gene Trans-lucency
(1-9)
White core
(0-9)
White belly
(0-9)
Alkali digestive value
(1-7)
Protein content
(%)
Amylose content
(%)
Glossiness
(Toyo-value)
Length
(mm)
Width
(mm)
Thickness
(mm)
L/W ratio
Chamdongjin 5.68az 2.83a 2.05a 2.01a GW2-gs3-qsw5 1a 0a 1a 6.3b 5.2b 18.4a 83.6a
Sindongjin 5.80a 2.88a 2.13a 2.02a GW2-gs3-qsw5 1a 0a 1a 6.7a 6.1a 18.3a 72.0b
Nampyeong 4.85b 2.78a 2.04a 1.75b GW2-GS3-qsw5 1a 0a 0b 6.5ab 6.1a 18.1a 77.6ab

Characteristics related to milling quality.

Cultivar Milling recovery ratio (%) Head rice milling recovery ratio
(%)
Brown/rough Milled/brown Milled/rough Head rice
Chamdongjin 84.0 89.4 75.1 80.2 60.3
Sindongjin 84.9 90.2 76.6 86.4 66.2
Nampyeong 82.5 90.2 74.4 97.8 72.7

Palatability of cooked rice.

Cultivar Test of palatability of cooked rice at
National Institute of Crop Science in 2020
(-3-+3)
Korea Food Research Institute in 2019
(1-9)
Korea Food Research Institute in 2020
(1-9)
National Institute of Crop Science in 2022
(1-7)
Chamdongjin 0.11 7.18 6.63 4.9*z
Sindongjin 0.12 6.80 6.17 4.3
Nampyeong 0.05 6.27 - -

Number of homozygous KASP markers between ‘Sindongjin’ and other cultivars.

Cultivar Chromosome Total
(%)
1 2 3 4 5 6 7 8 9 10 11 12
Sindongjin 91 61 50 66 66 64 70 74 64 42 79 60 787(100)z
Nampyeong 48 27 28 23 32 29 25 28 29 19 34 27 349(44.3)
Pyeongan 86 40 32 45 59 55 55 73 48 40 74 58 665(84.5)
Dami 88 59 46 66 66 64 64 74 60 42 63 60 752(95.6)
HR27195 86 60 45 39 51 63 55 72 61 34 53 60 679(86.3)
Chamdongjin 91
(100)y
61
(100)
50
(100)
45
(68.2)
65
(98.5)
64
(100)
65
(92.9)
74
(100)
64
(100)
42
(100)
77
(97.5)
60
(100)
758(96.3)
Table 1 Segregation ratio of disease resistance genes of BC1F1 plants by molecular marker analysis.

zRR: homozygote for resistance gene, Rr: heterozygote, rr: homozygote for susceptible gene

Table 2 Segregation ratio of resistance reaction of BC1F2 population against bacterial blight K3a race by bioassay.
Table 3 Major agronomic traits and yield components at yield trial in Joenju during 2017-2020.

zDAS: days after seeding

yns means no significant by t-test

Table 4 Major agronomic traits and yield components at local adaptability test in 2020.

zDAS: days after seeding

yMeans with same letters in a column are not significantly different at p<0.05 (ANOVA followed by DMRT)

Table 5 Response to physiological and abiotic stresses.

zCold tolerance was evaluated at cold water (17℃) irrigation nursery in Chuncheon substation, NICS

yGermination rate for 15 days at 13℃

xGermination rate for 7 days at 25℃

Table 6 Resistance reaction to bacterial blight.

zR: resistant, S: susceptible

Table 7 Resistance reaction to bacterial blight at field resistance test by inoculation of K3a race.

xns and ** mean no significant and significant at p<0.01 by t-test

Table 8 Resistance reaction to blast disease.

zR: resistant, M: moderately resistant, S: susceptible

Table 9 Reaction to virus disease and insect pests.

zBPH: brown planthopper, SBPH: small brown planthopper

yR: resistant, M: moderately resistant, S: susceptible

Table 10 Characteristics related to grain shape and grain quality.

zMeans with same letters in a column are not significantly different at p<0.05 (ANOVA followed by DMRT)

Table 11 Characteristics related to milling quality.
Table 12 Palatability of cooked rice.

z* means significantly different at p<0.05 by t-test

Table 13 Number of homozygous KASP markers between ‘Sindongjin’ and other cultivars.

zThe numbers in parentheses refer to the rate of homozygous KASP markers between ‘Sindongjin’ and other cultivars

yThe numbers in parentheses refer to the rate of homozygous KASP markers between ‘Sindongjin’ and ‘Chamdongjin’ on each chromosome