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Korean. J. Breed. Sci. : Korean Journal of Breeding Science

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"Ye-Seul Choi"

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"Ye-Seul Choi"

New Cultivar Developed
돌연변이 육종으로 육성한 대형 이삭 식용피 ‘맛나직’
A New Large-Panicled Barnyard Millet Variety ‘Matnajik’ Developed by Mutation Breeding
Woo-Ri Han, Ye-Seul Choi, Chae-Young Lee, Eun-Jeong Kim, Sol-Ji Noh, Ju hyun Im, Jae-Ho Park, Ju-Hyoung Kim, Eun Hee Cho, Hyun-Ju Eom
Korean. J. Breed. Sci. 2026;58(2):229-236.   Published online June 1, 2026
DOI: https://doi.org/10.9787/KJBS.2026.58.2.229
A new barnyard millet variety, ‘Matnajik,’ was developed by the Chungcheongbukdo Agricultural Research and Extension Services from 2014 to 2023 through gamma-ray mutation breeding. Morphologically, ‘Matnajik’ exhibits a semi-straight plant type, conical green panicles, grayish-white seeds, yellowish-brown dehusked grains, and a non-glutinous endosperm. Its heading date is July 29, classifying it as a medium-maturing variety that heads approximately 11 days later than the control variety, ‘Borajik.’ Notably, ‘Matnajik’ has a large panicle type; its average culm length is 138 cm, and its panicle length is 23 cm, both of which are significantly longer than those of the control. In the yield trials conducted from 2022 to 2023, the average grain yield of ‘Matnajik’ was 252 kg⋅10a-1, a 13% increase over ‘Borajik’ (224 kg⋅10a-1). Furthermore, physiochemical and biological activity analyses revealed that ‘Matnajik’ contains higher levels of crude ash and essential minerals, including potassium, calcium, and magnesium. Specifically, it showed significantly higher total polyphenol and flavonoid contents as well as greater radical-scavenging activity than the control, indicating its high value as a functional food material. In conclusion, ‘Matnajik’ is a promising variety with a large panicle, high yield, and enhanced functional properties, and it is expected to be widely utilized as a new specialized cash crop in the Chungbuk region (Registration No. 10814).
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재배안정성이 향상된 중생 다수성 적갈메 ‘다홍미’
‘Dahongmi’, a Mid-Maturing, High-Yielding, Red-brown Colored Rice Cultivar with Improved Cultivation Stability
Sang-Beom Lee, Hyang-Mi Park, Kuk-Hyun Jung, Ung-Jo Hyun, Yong-Jae Won, Jeong-Heui Lee, Jung-Hee Jang, Chae-Young Lee, Tae-Jin Won, Ye-Seul Choi, Yong-Hee Jeon, Yoon-Sung Lee, Eok-Keun Ahn
Korean. J. Breed. Sci. 2023;55(4):381-388.
Published online December 1, 2023
DOI: https://doi.org/10.9787/KJBS.2023.55.4.381

‘Dahongmi’ was developed to enhance the quality of colored rice by crossing ‘Jeogjinju’, Korea’s red-brown colored rice variety, with ‘Junam’, a variety known for excellent cultivation characteristics. ‘Dahongmi’ is a mid-maturing cultivar harvested approximately 15 days later than ‘Jeogjinju’, suitable for the mid-central plains. Each ‘Dahongmi’ plant bears 14 panicles, similar to that in ‘Jeogjinju’ but with an additional 22 grains per panicle and a heavier 1000-grain weight compared to that of ‘Jeogjinju’. ‘Dahongmi’ exhibited superior low-temperature germination rate (85.1%) and a higher percentage of fertile grains at a cold-water irrigated nursery (36.2%) compared to ‘Jeogjinju’. The stem height of ‘Dahongmi’ is 89.7 cm, similar to that of ‘Jeogjinju’. However, ‘Dahongmi’ has a third node height 9 cm shorter than that of ‘Jeogjinju’, enhancing its resistance to lodging. Furthermore, it displayed resistance to leaf blast, bacterial leaf blight (K1, K2, and K3 strains), and rice stripe virus, ensuring stability during cultivation. The protein and amylose content of ‘Dahongmi’ are 5.5% and 18.9%, respectively, similar to that of ‘Jeogjinju’ (5.9%, 18.3%). The levels of antioxidant components such as total polyphenols and flavonoids are comparable to that of ‘Jeogjinju’. However, ‘Dahongmi’ does not exhibit resistance against bacterial leaf blight strain K3a and delphacidae, underscoring the importance of timely and balanced fertilization for effective early-stage management. ‘Dahongmi’ exhibits better yield, straw strength, and plant architecture compared to ‘Jeogjinju’. It has immense potential for augmenting the yield of high-antioxidant-pigmented rice varieties. In addition, it could provide valuable foundational data for the brown rice processing industry (Registration Number: 8680).

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