Phenotypic Diversity Analysis of 41 Miscanthus sacchariflorus and M. lutarioriparius Germplasms

doi:10.11733/j.issn.1007-0435.2025.05.014

Acta Agrestia Sinica ›› 2025, Vol. 33 ›› Issue (5): 1473-1485.DOI: 10.11733/j.issn.1007-0435.2025.05.014

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Phenotypic Diversity Analysis of 41 Miscanthus sacchariflorus and M. lutarioriparius Germplasms

WU Chun-yan¹, XIAO Liang², WU Bi-shan², ZHOU Jin¹, TANG Yan-mei², LIU Ming-xi¹

1. Department of Pratacultural Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan Province 410128, China;
2. College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan Province 410128, China

Received:2024-07-04 Revised:2024-09-13 Online:2025-05-15 Published:2025-05-20

41份荻、南荻种质资源的表型多样性分析

吴春妍¹, 肖亮², 吴碧珊², 周锦¹, 唐艳梅², 刘明稀¹

1. 湖南农业大学农学院草业科学系, 湖南长沙 410128;
2. 湖南农业大学生物科学技术学院, 湖南长沙 410128

通讯作者: 刘明稀,E-mail:lmx75@hunau.edu.cn
作者简介:吴春妍（2000-），女，汉族，山东济南人，硕士研究生，主要从事芒属植物研究，E-mail：1430866011@qq.com
基金资助:
湖南省重大专项（2021NK1050）资助

Abstract

Abstract: To clarify the phenotypic genetic diversity of Miscanthus germplasms and the correlation among various traits， and screen the germplasms with good comprehensive characters， this study analyzed 11 phenotypic traits of 41 Miscanthus sacchariflorus and M. lutarioriparius germplasms based on correlation analysis， cluster analysis and principal component analysis. The results showed that there was significant variation in phenotypic traits， Shannon-Wiener’s diversity index ranged from 0.69 to 1.95， and variation coefficient ranged from 27.05% to 96.79%. The 41 germplasms could be divided into three groups when the Euclidean square distance was 20. Among them， group II had the highest number of secondary branches， which was of guiding significance in the breeding of the waterlogging resistant varieties of Miscanthus sacchariflorus and M. lutarioriparius， and group III had the highest plant height， the highest plant weight and the largest biomass， which was suitable for production practice. The result of this study could provide reference for the breeding and genetic improvement of the superior germplasm of Miscanthus.

Key words: Miscanthus sacchariflorus, M. lutarioriparius, Miscanthus, Phenotypic traits, Genetic diversity

摘要： 为进一步研究芒属（Miscanthus spp.）植物种质资源的表型遗传多样性及各性状之间的相关关系，为该属植物优良种质的选育及遗传改良提供参考依据。本研究选取来源于9个省的41份荻、南荻种质资源为研究对象，对供试材料的株高、最大节间长、二级分枝数、花序主轴长、茎粗和单株重等11个表型性状的遗传多样性进行分析，并利用相关性分析、聚类分析和主成分分析等方法，评价其表型性状的遗传变异水平，筛选综合性状优良的荻（Miscanthus sacchariflorus）、南荻（M. lutarioriparius）种质资源。分析结果表明，11个表型指标在41份材料之间表现出丰富的遗传多样性，遗传多样性指数范围为 0.69~1.95，变异系数范围为27.05%~96.79%，41份荻、南荻种质在欧式平方距离为20时可划分为3个类群，其中类群Ⅱ的二级分枝数最多，在荻、南荻抗涝品种的选育工作中具有指导意义，类群III的综合性状表现最好，该类群植株的株高较高，单株重最高，生物量最大，适宜生产实践。

关键词: 荻, 南荻, 芒属植物, 表型性状, 遗传多样性

CLC Number:

S578

WU Chun-yan, XIAO Liang, WU Bi-shan, ZHOU Jin, TANG Yan-mei, LIU Ming-xi. Phenotypic Diversity Analysis of 41 Miscanthus sacchariflorus and M. lutarioriparius Germplasms[J]. Acta Agrestia Sinica, 2025, 33(5): 1473-1485.

吴春妍, 肖亮, 吴碧珊, 周锦, 唐艳梅, 刘明稀. 41份荻、南荻种质资源的表型多样性分析[J]. 草地学报, 2025, 33(5): 1473-1485.

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Phenotypic Diversity Analysis of 41 Miscanthus sacchariflorus and M. lutarioriparius Germplasms

41份荻、南荻种质资源的表型多样性分析

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