Here, we report the breeding of a region-specific waxy corn, ‘Ararichal, ’ which contains anthocyanins. ‘Ararichal’ was produced by crossing two inbred lines, HW12 as seed parent and 16CLP39 as pollen parent. The hybrid was made in 2018 and has been evaluated for two years in Hongcheon, Yeongwol, and Inje since 2021. Days to silking of ‘Ararichal’ were 73 days, 3 days earlier than the standard variety ‘Cheongchunchal.’ The number of ears and weight of fresh ears was 3% and 49% higher than those of ‘Cheongchunchal,’ respectively. The lodging index was 1, indicating a stronger lodging tolerance than ‘Cheongchunchal.’ Resistance to southern and northern leaf blight was similar to that of the standard variety, confirming its cultivation stability. In a regional adaptability test for Jeongseon, ‘Ararichal’ showed the highest marketable yield of 801 kg/10a with a 97% marketable ear ratio, demonstrating excellent yield potential and regional adaptability. Based on the results of the two-year trial, ‘Ararichal’ was recommended for cultivation in Gangwon Province, particularly in Jeongseon, as a superior region-specific variety. The plant variety protection rights of ‘Ararichal’ were registered in December 2024 under grant number 10365.
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. J. Breed. Sci. 2025;57(4):547-563. Published online December 1, 2025
‘Amissal’ is a regionally specialized rice cultivar developed to strengthen the competitiveness of local rice and is characterized by its distinct long-grain japonica type. It was bred through a single backcross between ‘Boramchan’—a high-yielding japonica cultivar with excellent cultivation stability used as the recurrent parent—and ‘HR30198-AC33’ (DGS79), a breeding stock with extra-long and spindle-shaped grains used as the donor parent for japonica grain shape diversification. Population and pedigree breeding methods were used during the breeding process. During the selection stage, molecular marker-assisted selection targeting the major grain shape genes, GS3 and qSW5 was applied, enabling the identification of lines carrying the gs3-qSW5 allele combination associated with long grain shape. ‘Amissal’ was developed through yield trials, local adaptability tests, selection trials addressing regional needs, and on-farm research aimed at developing long-grain japonica rice for export. The heading date of ‘Amissal’ was August 17, two days later than that of ‘Nampyeong’. Compared to ‘Nampyeong’, ‘Amissal’ exhibited greater biomass due to longer culms, more spikelets per panicle but fewer panicles per hill, and a heavier 1,000-grain weight. It demonstrated strong resistance to bacterial blight (races K1, K2, and K3) but was susceptible to viral diseases and insect pests. In terms of yield, it outperformed ‘Nampyeong’. The average brown rice grain length was 6.14 mm, classifying it as long-grain type. The length-to-width ratio was 2.43, corresponding to a semi-spindle shape, which clearly distinguishes it from existing Korean japonica cultivars. While its milling recovery rate was similar to that of ‘Nampyeong’, a high proportion of broken rice due to its long grain shape resulted in a lower head rice. ‘Amissal’ had low protein content and provided the sticky and soft texture typical of japonica rice, with excellent scores in sensory evaluation tests. As a differentiated, regionally specialized rice cultivar featuring a long-grain japonica type and superior eating quality, ‘Amissal’ is expected to contribute to the advancement of the local rice industry, particularly through applications in rice export and the utilization of broken rice and rice straw (Registration No. 10167).
First
Prev
