Korean Journal of Breeding Science

"Jou"

New Cultivar Developed

장수형 조숙 사일리지용 밀(Triticum aestivum L.) ‘조우’ Whole-crop Wheat Cultivar ‘Jou’ with Long Spikes and Early Maturity: Jae-Han Son, Kyeong-Min Kim, Changhyun Choi, Myoung-Goo Choi, Jun-Seuk Choi, Myoung-Hui Lee, Chon-Sik Kang; Korean. J. Breed. Sci. 2026;58(3):337-345. Published online September 1, 2026; DOI: https://doi.org/10.9787/KJBS.2026.58.3.337

Abstract
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‘Jou’ is a new wheat (Triticum aestivum L.) cultivar developed by the Rural Development Administration for whole-crop forage with early maturity in 2023. To develop an early maturing forage wheat cultivar suitable for double cropping systems in Korea, an artificial cross was made in 2010 using ‘Taejoong,’ a tall cultivar with high biomass production, as the female parent and ‘Keumkang,’ an early maturing cultivar with superior agronomic traits, as the male parent. After bulk cultivation in Iksan, the pedigree was selected in Iksan and Wanju, and the early maturing tall line, IW2010145-B-B-44-1-5-2-5-1, was selected in 2018. ‘Jou’ exhibited favorable agronomic characteristics, including tolerance to lodging and fusarium head blight and high yield of whole-crop dry matter. The heading and harvest dates of ‘Jou’ were April 17 and May 17, respectively, which were similar to those of ‘Cheongwoo.’ ‘Jou’ had lower spike number per m² (752), and higher 1,000-grain weight (48.1 g) than those of ‘Cheongwoo’ (1,025, and 44.5 g, respectively). In the regional yield trial, the average whole-crop dry matter yield in paddy fields was 14.6 MT ha^-1. Although the harvest time of ‘Jou’ is slightly later than that of ‘Cheongwoo,’ it is a tall-type wheat cultivar with relatively early heading among tall cultivars, making it suitable for forage wheat cultivation (Registration No. 10756).

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Review Article

우리나라 임목육종 연구동향: 학술지 논문 키워드 분석을 중심으로 Overview of Research on Forest Tree Breeding in South Korea based on the Keyword Analysis in Research Articles: Soo Hyung Eo, Byeong-Ju Lee, Kyu-Suk Kang, Jun-Won Kang, Eun Ju Cheong, Myung Suk Choi; Korean. J. Breed. Sci. 2020;52(Special Is):189-197. Published online April 30, 2020; DOI: https://doi.org/10.9787/KJBS.2020.52.S.189

Abstract
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Studies on forest tree breeding (FTB) in South Korea started in the 1950s and have achieved remarkable outcomes through various techniques and methods such as selective breeding, cross breeding, introduction breeding, and biotechnology. Despite these outstanding achievements, no attempt has been made to objectively and quantitatively evaluate the results of domestic FTB research. Here, we quantitatively analyzed past research trends using keywords of published journal papers and compared the current domestic research level of FTB with the international level. Using various keywords in this field, we searched for research articles published in the Journal of Korean Society of Forest Science, the Korean Journal of Breeding Science, and the journals listed on the Science Citation Index from 1962 to present. The analysis of these studies showed that the research on FTB has grown quantitatively in Korea, and has been conducted on various subjects. Research topics from Korea, in terms of purpose and species, are not significantly different from those of foreign countries. The genus Pinus has been the major subject of FTB studies both domestically and internationally. However, in foreign FTB research, the trees used for research have diversified each year, while they were not diverse in Korea. The FTB research capacity of Korean national institutions, such as the National Institute of Forest Science, continues to dramatically increase, while the research capacity of universities is relatively low. Based on the results of this analysis, it is necessary to establish a concrete and effective policy for future research and development of FTB.

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