Acta Agriculturae Zhejiangensis ›› 2026, Vol. 38 ›› Issue (6): 1177-1186.DOI: 10.3969/j.issn.1004-1524.20250640

• Crop Science • Previous Articles     Next Articles

Comprehensive evaluation of 45 adzuki bean germplasms

LAN Huijie(), GAO Hongwei, JI Jiaruo, CAI Ruiguo, ZHANG Min, LIN Xiaohu, YANG Min*()   

  1. Hebei Key Laboratory of Crop Stress Biology, College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao 066600, Hebei, China
  • Received:2025-10-10 Online:2026-06-25 Published:2026-07-14

Abstract:

As an important traditional coarse cereal crop in China, adzuki bean (Vigna angularis) holds significant value in both agricultural economy and nutritional health. However, the main production areas are facing bottleneck problems such as germplasm degradation, declining stress resistance, and separation of quality traits. In this study, 45 adzuki bean germplasm resources were used as materials to systematically determine agronomic traits and starch and crude protein contents. An improved membership function model based on the entropy weight method (EWM-UMF) was constructed, and principal component analysis (PCA), discriminant function analysis (DFA), and hierarchical cluster analysis (HCA) were combined to analyze the trait association network, yielding comprehensive coefficients of the germplasms. The results showed that the coefficients of variation for pods per plant and seeds per plant were the highest, at 30.16% and 28.03%, respectively, while that for crude protein content was the lowest, at 4.27%. Principal component analysis extracted three principal components, representing yield component factors, seed size and branching characteristics, and plant morphology, with a cumulative variance contribution rate of 69.860%. Hierarchical cluster analysis divided the germplasms into three groups: Group Ⅰ consisted of 2 low-yield germplasms, Group Ⅱ consisted of 4 high-yield germplasms, and Group Ⅲ consisted of 39 medium-yield, large-seed, high-starch germplasms. Through comprehensive evaluation based on the membership function, five elite germplasms (A35, A40, A39, A11, and A13) were selected. Stepwise regression analysis indicated that plant height, stem diameter, branch number, pods per plant, seeds per plant, seed yield per plant, and crude protein content were key evaluation indicators. This study innovatively integrates multi-dimensional statistical methods to form a hierarchical evaluation system, providing a theoretical basis and practical guidance for the evaluation and selection of adzuki bean germplasm resources.

Key words: adzuki bean, germplasm resource, principal component analysis, cluster analysis, comprehensive evaluation

CLC Number: