高原农业2025，Vol.9Issue(4)：462-469,8.DOI:10.19707/j.cnki.jpa.2025.04.006
大花黄牡丹叶片解剖结构性状异速生长与生态适应性研究
Allometric Growth and Ecological Adaptability of the Leaf Anatomical Structure of Paeonia ludlowii
摘要
Abstract
To evaluate intraspecific variation,Paeonia ludlowii leaves from five natural populations were subjected to morphological and biochemical analyses,focusing on traits including leaf thickness,upper and lower epidermal thickness,palisade and spongy tissue thickness,and the palisade-to-spongy(P/S)ratio.Classical allometric equations were employed to analyze trait relationships.Results revealed significant interspecific variation in leaf thickness and lower epidermal thickness(P<0.05).Strong positive correlations were detected between leaf thickness and spongy tissue(P<0.01),palisade tissue and P/S ratio(P<0.05),and palisade tissue and mesophyll tightness(P<0.01).Spongy tissue thickness positively correlated with mesophyll porosity(P<0.01).All anatomical traits exhibited low to moderate variability(CV=0.03～0.39),indicating evolutionary stability.Allometric analysis demonstrated significant positive scaling between epidermal layers(P<0.01),contrasting with negative relationships between lower epidermis/palisade tissue and palisade tissue/leaf thickness(P<0.05).Environmental analysis showed lower epidermal thickness decreased with elevation(P<0.05),while other traits(excluding mesophyll porosity)displayed non-significant altitudinal trends.These findings suggest P.ludlowii adapts to environmental heterogeneity through coordinated adjustments in leaf structural traits,optimizing allometric growth patterns across habitats.关键词
大花黄牡丹/叶片解剖结构/异速方程/环境因子/生态适应性Key words
Paeonia ludlowii/Leaf anatomical traits/Allometric equation/Environmental factors/Ecological adaptability分类
农业科技引用本文复制引用
闫刚,尹秀,张二豪,兰小中,张新军,禄亚洲..大花黄牡丹叶片解剖结构性状异速生长与生态适应性研究[J].高原农业,2025,9(4):462-469,8.基金项目
生物技术一流专业建设项目(2024-007) （2024-007）
西藏农牧学院研究生教育创新计划项目(YJS2024-43). （YJS2024-43）
