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Cowpea Cultivar, ‘Okdang’, with an Intermediate Plant Habit and Erect Plant Type
중간신육형 직립초형 동부 품종 ‘옥당’
Korean J Breed Sci 2018;50(3):319-323
Published online September 1, 2018
© 2018 Korean Society of Breeding Science.

Dong-Kwan Kim1*, Jin-Gyung Choi1, Oh-Do Kwon1, Kyung-Dong Lee2, and Kyoung-In Ryu3
김동관1*, 최진경1, 권오도1, 이경동2, 류경인3

1Crop Research Division, JARES, Naju 58213, Korea
2Department of Oriental Medicine Materials, Dongshin University, Naju 58245, Korea
3Yeonggwang-gun Agricultural Technology Center, Yeonggwang 57031, Korea
1전남농업기술원, 2동신대학교, 3영광군농업기술센터
Correspondence to: (E-mail:, Tel: +82-61-330-2521, Fax:+82-61-336-8177)
Received June 4, 2018; Accepted July 6, 2018.
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
A cowpea cultivar ‘Okdang’ (Vigna unguiculata L. Walp) was developed by the Jeollanamdo Agricultural Research and Extension Services (JARES) in 2013 using the breeding method of pure line isolation applied to the foundation stock of IT45384. ‘Okdang’ has an erect plant type with an intermediate plant habit, green hypocotyls, heart leaflet, orange yellow seed surface of faint luster, and brown and straight pods when matured. Its first flowering and maturing dates were approximately seven and ten days earlier than that of the control cultivar ‘Seoweon’. The stem length of ‘Okdang’ was 42 cm, which was 57 cm shorter than that of the control cultivar. Its 100-seed weight was 16.6 g, which was heavier than that of the control cultivar by 5.9 g. The weight ratio of the seed coat for the entire seed was 12%, which was 1.4%p lower than that of the control cultivar. Its field resistance to leaf and systemic diseases was as strong, or slightly weaker than that of the control cultivar. In addition, ‘Okdang’ had a high lodging resistance. The average yield of ‘Okdang’ was 1.85 ton/ha, which was 40% higher than that of the control cultivar ‘Seoweon’ (Cultivar registration number: 5879).
Keywords : Cowpea, Cultivar, Okdang, Intermediate plant habit, Erect plant type

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