41份荻、南荻种质资源的表型多样性分析

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中图分类号：S578 文献标识码：A 文章编号：1007-0435（2025）05-1473-13

Abstract：To clarifythe phenotypic genetic diversity of Miscanthus germplasms and thecorelation among vari ous traits，and screen the germplasms with good comprehensive characters，this study analyzed 1l phenotypic traitsof 41Miscanthus sacchariflorus and M .lutarioriparius germplasmsbased 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 O.69 to1.95，andvariation coeficient ranged from 27.05% to 96.79% . The 4l germplasms could be divided into three groups when the Euclidean square distance was 2O. 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 II 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 ofMiscanthus.

Key words：Miscanthus sacchariflorus ; M lutarioriparius;Miscanthus;Phenotypic traits;Genetic diversity

气候变化和能源短缺作为当前突出的全球性挑战，事关国际社会共同利益与地球未来，大力发展生物质能源，改变能源的生产、消费模式，对于保障我国能源安全及缓解能源供给紧张具有重大意义[1。（剩余15502字）