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New Cultivar Developed

탈립성과 벼흰잎마름병 저항성이 개선된 최고품질 중만생 벼 품종 ‘수광1’

이창민1, 박현수1, 서정환1, 박송희1, 박재령1, 정오영1, 정지웅1, 김기영1, 이건미1, 서정필2, 하수경1, 진민아1, 이현숙1, 강경민1, 이길응1

Sukwang1: A Premium-Quality, Mid-late Maturing Rice Cultivar with Improved Resistance to Shattering and Bacterial Blight

Chang-Min Lee1, Hyun-Su Park1, Jeonghwan Seo1, Songhee Park1, Jae-Ryoung Park1, O-Young Jeong1, Ji-Ung Jeung1, Ki-Young Kim1, Keon-Mi Lee1, Jung-Pil Suh2, Su-Keyong Ha1, Mina Jin1, Hyun-Sook Lee1, Kyeongmin Kang1, Gileung Lee1
Korean. J. Breed. Sci. 2026;58(3):321-335.
Published online: September 1, 2026

1농촌진흥청 국립식량과학원 기초식량작물부 품종개발과
2농촌진흥청 국립식량과학원 기초식량작물부 중북부작물연구센터

1Crop Breeding Division, Department of Crop Sciences, National institute of Crop and Food Science, RDA, Wanju, 55365, Republic of Korea
2Central-Northern Region Crop Research Center, Department of Crop Sciences, National institute of Crop and Food Science, RDA, Suwon, 16429, Republic of Korea
Corresponding author:  Hyun-Su Park, Tel: +82-63-238-5260
Email: mayoe@korea.kr
• Received: July 1, 2026   • Revised: August 2, 2026   • Accepted: August 3, 2026
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‘수광1’은 최고품질 벼 품종인 ‘수광’의 우수한 밥맛과 품질 특성을 유지하면서 성숙기 탈립성과 벼흰잎마름병 저항성을 개선하여 기후적응성과 재배안정성을 향상시키기 위해 개발된 중만생 벼 품종이다. 2013/2014년 동계에 ‘수광’을 모본으로 하고 내탈립성이며 벼흰잎마름병 K3a 균계에 저항성인 ‘HR29177-AC70-1’을 부본으로 교배하였으며, 계통 선발과 생산력 검정시험을 거쳐 ‘전주662호’를 육성하였다. 이후 2021년부터 2023년까지 실시한 지역적응성 검정시험에서 우수성이 확인되어 ‘수광1’으로 명명되었다. ‘수광1’의 평균 출수기는 8월 12일인 중만생종으로, 백미수량은 566 kg/10a로 ‘남평’과 유사하였다. ‘수광1’은 성숙기 내탈립성이 향상되었으며, 벼흰잎마름병 K1, K2, K3 및 K3a 균계에 모두 저항성을 나타냈다. 분자표지 분석 결과 Xa3xa5 두 개의 벼흰잎마름병 저항성 유전자를 보유하였으며, 키다리병 저항성 유전자 qFfR1과 수발아 관련 대립유전자 qltg3-1을 보유하는 것으로 확인되었다. 쌀 외관품질과 식미가 우수하고 완전미 도정수율이 높았으며, Target capture sequencing SNP-genotyping platform을 이용한 분석에서 모본인 ‘수광’과 93.6%의 유전적 유사도를 나타냈다. 또한 현장실증 결과 ‘수광’에 비해 탈립성과 벼흰잎마름병 저항성이 개선되었으며, 높은 완전미 도정수율과 우수한 밥맛으로 생산자와 수요자로부터 높은 평가를 받아 2025년 최고품질 벼 품종으로 선정되었다. ‘수광1’은 ‘수광’의 우수한 품질과 브랜드 가치를 유지하면서 재배안정성을 향상시킨 기후적응형 최고품질 벼 품종으로 영⋅호남 평야지와 서남부 및 남부 해안지에 적응한다.

Sukwang1 is a premium-quality, mid-late maturing cultivar of japonica rice, which was developed to improve resistance to shattering and bacterial blight while maintaining the relatively high grain and eating quality of Sukwang. Derived from a cross between Sukwang and HR29177-AC70-1, the promising line Jeonju662 was evaluated through local adaptability tests (2021-2023) before release. Its average heading date was August 12, with a milled rice yield of 5.66 MT/ha. Sukwang1 exhibited improved resistance to shattering and all four Korean races (K1-K3a) of bacterial blight. Molecular marker analysis revealed the presence of Xa3 and Xa5 for bacterial blight resistance, qFfR1 for bakanae disease resistance, and a loss-of-function allele of qltg3-1 for reduced preharvest sprouting. Target capture sequencing analysis of single-nucleotide polymorphisms revealed 93.6% genetic similarity to Sukwang, indicating that most of the parental background was retained while key agronomic traits were improved. Featuring excellent grain appearance, high head-rice milling recovery, and relatively high taste, Sukwang1 has been designated as a Premium-Quality Rice cultivar by the RDA in 2025, and is recommended for the Honam and Yeongnam plains and southern coastal regions of Republic of Korea (registration number: 10667).

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Sukwang1: A Premium-Quality, Mid-late Maturing Rice Cultivar with Improved Resistance to Shattering and Bacterial Blight
Korean. J. Breed. Sci.. 2026;58(3):321-335.   Published online September 1, 2026
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Sukwang1: A Premium-Quality, Mid-late Maturing Rice Cultivar with Improved Resistance to Shattering and Bacterial Blight
Korean. J. Breed. Sci.. 2026;58(3):321-335.   Published online September 1, 2026
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