Beom Kyu Kang, Jeong Hyun Seo, Jun Hoi Kim, Su Vin Heo, Man Soo Choi, Jee Yeon Ko, Byung Won Lee, In Youl Baek, Jae Seong Park, Choon Song Kim, Ji Ho Choo, Won Young Han, Myeong Cheol Seo, Myung Hee Lee, Nam Geol Kim, Gi Young Kim, Taek Rim Lee, Ji Ae Lee, Sol Ji No, Seung Su Lee, Young Min Jo, Jin Sil Choi, Hyun Tae Jo, Jin Young Kim
Korean. J. Breed. Sci. 2026;58(1):31-41. Published online March 1, 2026
A new soybean [Glycine max (L.) Merr.] cultivar, ‘Dadrim,’ was developed by the National Institute of Crop and Food Science (NICS). ‘Dadrim’ is characterized by its superior suitability for tofu processing and high adaptability to mechanized cultivation. This cultivar ‘Milyang374’ was developed using the pedigree method from an artificial cross made in 2012 between ‘Milyang231’ and ‘Chamol.’ Its agronomic characteristics and production stability were verified through regional adaptation trials conducted over three years (2020- 2022). ‘Dadrim’ exhibits a determinate growth habit, white flowers, and spherical seeds with a yellow seed coat and yellow hilum. It is a large-seeded variety with a 100-seed weight of 30.9 g. As a late-maturing variety, it reaches maturity around October 22. Despite a relatively short plant height, it features a high first pod height of 16 cm, making it advantageous for mechanical harvesting. ‘Dadrim’ is resistant to bacterial pustule and soybean mosaic virus and possesses excellent lodging resistance. Notably, ‘Dadrim’ demonstrates a high tofu yield of 283%, which is 67% points higher than ‘Daewonkong’. The resulting tofu has a soft texture, making it suitable for soft and silken tofu. It also received high preference scores for taste and texture in sensory evaluations. ‘Dadrim’ yielded 3.37 tons/ha, an 8% increase compared to ‘Daewonkong.’ This new variety is expected to increase farm income and advance the domestic tofu industry (Registration No. 10461).
A new adzuki bean cultivar, ‘Hongchan’ (Vigna angularis (Willd.) Ohwi & H. Ohashi), with a bright red seed coat and large seed size was developed through a pedigree selection by crossing ‘YA0814’ and ‘Milyang9’ from 2009 to 2022. A promising line, ‘YA0912-B-B-6-1-3-3-1-2,’ was selected and designated as ‘Milyang50. ’ From 2020 to 2022, regional yield trials (RYTs) were conducted in four locations (Miryang, Iksan, Cheongju, and Chuncheon). This line demonstrated stable performance and was released under the name ‘Hongchan.’ It has a semi-determinate growth habit, green embryonic color, green stems, yellow flowers, yellow pods, and a white hilum. It is late-maturing, but flowers early; its flowering and maturing dates were August 10 and October 9, respectively, which were 10 days earlier in flowering and 5 days later in maturity than ‘Arari.’ The stem height, number of pods per plant, and number of seeds per pod were 56, 24, and 6.5, respectively. There were significant differences (p<0.05) in the L*, a*, and b*values of the seeds and pastes of ‘Hongchan’ and ‘Arari.’ The average 100-seed weight of ‘Hongchan’ was 21.3 g, which was 4.9 g heavier than that of ‘Arari.’ The average yield of ‘Hongchan’ was 2.11 ton/ha, which was 6% higher than that of ‘Arari’ in the 3-year regional yield trial. These results indicate that ‘Hongchan’ is an adzuki bean cultivar suitable for mechanical harvesting and paste processing (Registration No. 5573).
Soybean [Glycine max (L.) Merr.] is an excellent source of protein, oil, carbohydrates, and many other bioactive ingredients. However, its raw mature seeds also contain several antinutritional components. The newly developed soybean cultivar ‘Hayoung’ has large yellow seeds and a low stachyose content, and is free of lipoxygenase, Kunitz trypsin inhibitor (KTI), and 7S α’-subunit proteins. ‘Hayoung’ was selected from the population derived from a cross between the intermediate parent (F4-4) and the breeding line (15G1). It has purple flowers, tawny pubescence, a determinate growth habit, and light-yellow pods at maturity. The seed of the cultivar has a yellow hilum and yellow seed coat color. The dry weight seed protein and oil content were 37.9 and 16.0%, respectively. The stachyose content was 3.1 g/kg, which was much lower than 12.7 g/kg of the check cultivar, ‘Daewon’. ‘Hayoung’ has shown resistance to soybean necrosis, soybean mosaic virus, Cercospora leaf spot and blight, black root rot, pod and stem blight, and bacterial pustule. ‘Hayoung’ matured on 22 October with a plant height of 56 cm and a 100-seed weight of 32.3 g. The average yield of the cultivar was 3.12 (Ton/ha), based on regional yield trials in 2018 at four locations. ‘Hayoung’ has been registered as a soybean cultivar (registration number: 8625, registration date: June 08, 2021) by the Korea Seed & Variety Service, Republic of Korea.