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2025 Vol.70, Issue 4 Preview Page

Original Research Article

Multivariate Cluster Analysis of Quantitative Traits in Korean and Foreign Mungbean [Vigna radiata (L.) R. Wilczek] Germplasm

국내외 녹두 유전자원의 양적형질 변이 및 다변량 군집분석

Yu-Na Kim1
,
Eun Soo Lee2
,
Seoyeong Yang1
,
Jaekyeong Baek1
,
Youngseo Song1
,
Woon-Ha Hwang3
,
Sukown Park4*
김 유나1
,
이 은수2
,
양 서영1
,
백 재경1
,
송 영서1
,
황 운하3
,
박 수권4*
1Junior Scientist, Crop Production & Physiology Division, National Institute of Crop Science, RDA, Wanju 55365, Korea
2Junior Scientist, Upland Crop Breeding Division, National Institute of Crop Science, RDA, Miryang 50424, Korea
3Senior Scientist, Crop Production & Physiology Division, National Institute of Crop Science, RDA, Wanju 55365, Korea
4Senior Scientist, Upland Crop Breeding Division, National Institute of Crop Science, RDA, Miryang 50424, Korea
1농촌진흥청 국립식량과학원 기초식량작물부 재배생리과 농업연구사
2농촌진흥청 국립식량과학원 밭작물개발부 밭작물개발과 농업연구사
3농촌진흥청 국립식량과학원 기초식량작물부 재배생리과 농업연구관
4농촌진흥청 국립식량과학원 밭작물개발부 밭작물개발과 농업연구관
*Corresponding Author
1 December 2025. pp. 276-282
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Abstract

Mungbean [Vigna radiata (L.) R. Wilczek] originated in the region of the Indian subcontinent and is currently cultivated mainly in Central, East, and Southeast Asia. Although mungbean has high adaptability and nutritional value, and thus considerable potential for cultivation in diverse environments, the genetic resources available for breeding remain limited. In this study, we evaluated the phenotypic variation and multivariate structure of 477 mungbean germplasm accessions collected from 12 countries, including Korea. Statistical analyses revealed that Korean accessions are characterized by a shorter growth duration (representing an early-maturing phenotype), and have longer pod lengths, larger numbers of seeds per pod, and higher 100-seed weights than foreign accessions, thereby indicating efficient pod development and seed filling, even within a limited growth period. Principal component analysis based on an assessment of six traits revealed that the first two principal components (PC1, PC2) explained 78.22% of the total variation. PC1, showing a positive association with flowering time and negative association with pod and seed size, partially differentiated Korean from foreign accessions. K-means clustering analysis identified three distinct clusters, among which Cluster III was characterized by both early maturity (days to flowering: 45.4, days to maturity: 64.03) and high yield potential (pod length: 11.18 cm, 100-seed weight: 5.9 g), indicating its suitability as breeding material under Korean cultivation conditions. These findings provide valuable insights into the phenotypic diversity of global mungbean germplasm and fundamental information for the breeding of varieties adapted to domestic environments.

Keywords
germplasm
multivariate
mungbean
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Information
  • Publisher :The Korean Society of Crop Science
  • Publisher(Ko) :한국작물학회
  • Journal Title :The Korean Journal of Crop Science
  • Journal Title(Ko) :한국작물학회지
  • Volume : 70
  • No :4
  • Pages :276-282
  • Received Date : 2025-11-03
  • Revised Date : 2025-11-17
  • Accepted Date : 2025-11-18
  • DOI :https://doi.org/10.7740/kjcs.2025.70.4.276
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