A new Rehmannia glutinosa cultivar ‘Dagang’ was bred from ‘Jihwang 1’ (check variety) seedlings by the medicinal crop breeding team of the National Institute of Horticulture and Herbal Science, RDA, in 2010. It has pink flowers, a dark brown seed coat, and a light yellow root cortex. The plant type was intermediate erect, whereas ‘Jihwang 1’ showed some drooping. The leaf shape was narrow oblong, whereas ‘Jihwang 1’ was oblong. The yield of dried root was higher than that of ‘Jihwang 1’. ‘Dagang’ showed stronger resistance to root rot than did ‘Jihwang 1’, rendering it more stable in cultivation. The regional adaptation trials were conducted at three different locations from 2009 to 2010. The average yield of ‘Dagang’ was 20.1 ton/ha, which was 14% higher than that of ‘Jihwang 1’. Also, compared with ‘Jihwang 1’, the yield of ‘Dagang’ was 1%–3% higher than that of the existing cultivars ‘Kokang’ and ‘Togang’. This cultivar could adapt to most of the cultivation areas in Korea, except for mountainous regions (Registration No. 4724).

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A new Rehmannia glutinosa cultivar ‘Tokang’ was derived from ‘Jihwang 1’ seedlings by medicinal crop breeding team of National Institute of Horticulture and Herbal Science, RDA in 2009. It has pink flower, dark brown seed coat, light yellow root cortex. The plant type was some rising from the ground. The content of catalpol and extract were higher than the ‘Jihwang 1’(check variety). The content of catalpol was 4.55% and the extract was 71.2%. It showed stronger resistance to root rot compare with the ‘Jihwang 1’. The regional yield trials were conducted at three different locations from 2007 to 2009. The average yield of ‘Tokang’ was 21.1ton/ha, which was 12% more than the ‘Jihwang 1’. This cultivar is adaptable to the whole of Korea except for mountain areas. (Registration No. 4725)

Citations

Citations to this article as recorded by  

• Comparison of Growth, Yield, and Photosynthetic Characteristics of Rehmannia glutinosa Libosch. as Affected by Substrate Type in Hydroponic Cultivation
  Jeong Won Yoon, Hyun Mun Kim, Jung Ho Kwak, Yong Kwon Yoo, Kyoung Sub Park
  Journal of People, Plants, and Environment.2026; 29(2): 177.     CrossRef
• Genetic diversity and cultivar identification in Rehmannia glutinosa using morphological traits and genome-wide SNP/InDel variation
  Sumin Jeong, Yun Ji Park, Yunjoo Kang, Yeseul Kim, Byung Jun Jin, Yong-Goo Kim, Jong Won Han, Inkyu Park
  Industrial Crops and Products.2025; 237: 122301.     CrossRef
• Evaluating the Growth, Yield and Quality of Some Potential Rehmannia glutinosa Varieties Grown in the Northern Region of Vietnam
  Thanh Loan Pham, Thi Le Thu Hoang
  Asian Journal of Plant Sciences.2024; 23(1): 74.     CrossRef
• Breeding of the New Variety Rehmannia glutinosa ‘Hanbangae’ for Mechanical Harvesting
  Jong Won Han, Mok Hur, Jin Tae Jeong, Jeong Hoon Lee, Young Ho Yoon, Kyung Ho Ma, Woo Tae Park, Yong Goo Kim
  Korean Journal of Medicinal Crop Science.2024; 32(5): 279.     CrossRef
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  Yae Jin Kim, Sin Hee Han, Chung Oui Hong, Jong Won Han, Sang Hoon Lee, Jae Ki Chang, Kyung Ho Ma
  Korean Journal of Medicinal Crop Science.2019; 27(5): 330.     CrossRef
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  Yae Jin Kim, Sin Hee Han, Kyungho Ma, Chung-Oui Hong, Jong-Won Han, Sang Hoon Lee, Jae Ki Chang, Jun soo Lee, Heon-Sang Jeong
  Korean Journal of Breeding Science.2019; 51(4): 386.     CrossRef
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  Sang-Hoon Lee, Chung-Berm Park, Yong-Ku Kang, Geum-Soog Kim, Sin-Hee Han, Ae-Jin Choi, Seung-Ho Han, Jong-Yeob Kim, Hyun-Ro Park, Mok Hur, Chun-Geon Park
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