热带亚热带植物学报2025，Vol.33Issue(5)：513-522,10.DOI:10.11926/jtsb.4937
基于叶性状的蕨类植物生理生态策略分析
Analysis of Eco-physiological Strategies of Fern Species Based on Leaf Traits
摘要
Abstract
To clarify the adaptability of ferns to environmental changes,thirty typical terrestrial fern species were selected from tropical and subtropical regions,measured their leaf(pinna)morphological structure,mechanical resistance and water relationship traits,and used the corresponding traits of 54 woody angiosperms in the same region as a reference.Combined with phylogenetic and trait network analysis,the correlations of leaf traits in ferns were analyzed.The results showed that compared with woody angiosperms,ferns had lower puncture force(Fp),weaker embolism resistance(P50leaf),and higher turgor loss point(Ψtlp),indicating that ferns had lower resistance to mechanical damage and water stress.The saturated water content(SWC)of fern leaves was significantly positively correlated with Ψtlp and P50leaf,suggesting that ferns balanced their relatively weak drought tolerance by increasing leaf water storage capacity;the SWC of angiosperm leaves was not correlated with P50leaf.The Fp of angiosperm leaves was significantly positively correlated with leaf mass per area,leaf thickness and maximum leaf hydraulic conductance;the Fp of ferns was only significantly positively correlated with leaf thickness,and the two evolved in concert.Therefore,different plant groups have diverse strategies for adapting to the environment.关键词
蕨类/形态解剖/水力学/机械阻力Key words
Fern/Morphology and anatomy/Hydraulics/Mechanical resistance引用本文复制引用
王阳艳,曾文豪,项伟,吴潇,朱师丹..基于叶性状的蕨类植物生理生态策略分析[J].热带亚热带植物学报,2025,33(5):513-522,10.基金项目
国家自然科学基金项目(32171502)资助 This work was supported by the National Natural Science Foundation of China(Grant No.32171502). （32171502）
