亚热带农业研究2025，Vol.21Issue(3)：163-172,10.DOI:10.13321/j.cnki.subtrop.agric.res.2025.03.003
光照与花期耦合对芦苇叶片形态及光合特征的影响
Coupling effects of light and flowering status on the morphological and photosynthetic characteristics of Phragmites australis leaves
摘要
Abstract
[Purpose]The study explored the photosynthetic physiological adaptation mechanism of Phragmites australis,aiming to provide a theoretical basis for wetland ecosystem species protection.[Method]With consideration to both flowering and shading,four conditions—flowering and shading,non-flowering and shading,flowering and non-shading,and non-flowering and non-shad-ing—were designed.The morphological and photosynthetic characteristics of leaves were compared among the four conditions.The significance and correlations of indexes were analyzed.[Result](1)Flowering significantly promoted the increases in leaf area,relative chlorophyll content(SPAD),and fresh mass of P.australis.Correlation analysis showed that leaf area at flowering had a sig-nificantly positive correlation with SPAD value(r=0.93),while fresh mass had a significantly negative correlation with Fv/Fm value(r=-0.56).This facilitated the leaves to capture light energy under varying light conditions for chlorophyll synthesis and accumulate photosynthetic products to support their development.(2)In the absence of flowering,the leaf morphological development of P.aust-ralis was relatively slow.(3)Under non-shading conditions,the leaf area,leaf length,leaf width,and dry mass of P.australis sig-nificantly increased,and both leaf length and leaf width showed significantly positive correlations with dry mass(r were 0.52 and 0.50,respectively).(4)Under shading conditions,the leaves promptly adjusted their morphological and photosynthetic characteris-tics to adapt to the environment and promote growth.[Conclusion]P.australis could coordinately adjust the morphological charac-teristics and photosynthetic physiological functions of leaves to optimize light energy capture and utilization efficiency,thereby adap-ting to low-light stress environments and supporting reproductive development.This demonstrates their physiological and morphologi-cal traits adaptive to complex environments.关键词
芦苇/开花状态/光照条件/叶片形态/光合生理特征Key words
Phragmites australis/flowering status/light conditions/leaf morphology/photosynthetic physiological characteristics分类
农业科学引用本文复制引用
赵瑾,范敦锦,李亚超,赵子豪,吴鹏飞,董强..光照与花期耦合对芦苇叶片形态及光合特征的影响[J].亚热带农业研究,2025,21(3):163-172,10.基金项目
海峡两岸红壤区水土保持协同创新中心科研项目"水土流失监测与效益评价研究"(KP80ND80304). （KP80ND80304）
