Effects of different day length and wind conditions to the seedling growth performance of Phragmites australis

Journal of Ecology and Environment

Bo Eun Nam¹  Jae Geun Kim²  Mun Gi Hong³ 

[1] Department of Biology Education, Seoul National University, 08826, Seoul, Republic of Korea;Department of Biology Education, Seoul National University, 08826, Seoul, Republic of Korea;Center for Education Research, Seoul National University, 08826, Seoul, Republic of Korea;Department of Science Education, Gwangju National University of Education, 61204, Gwangju, Republic of Korea;

关键词: Canopy openness;    Common reed;    Leaf blade revolving;    Microclimate;    Phenotypic plasticity;   

DOI  :  10.1186/s41610-021-00184-z

来源: Springer

【 摘 要 】

BackgroundTo understand shade and wind effects on seedling traits of common reed (Phragmites australis), we conducted a mesocosm experiment manipulating day length (10 h daytime a day as open canopy conditions or 6 h daytime a day as partially closed canopy conditions) and wind speed (0 m/s as windless conditions or 4 m/s as windy conditions).ResultsMost values of functional traits of leaf blades, culms, and biomass production of P. australis were higher under long day length. In particular, we found sole positive effects of long day length in several functional traits such as internode and leaf blade lengths and the values of above-ground dry weight (DW), rhizome DW, and total DW. Wind-induced effects on functional traits were different depending on functional traits. Wind contributed to relatively low values of chlorophyll contents, angles between leaf blades, mean culm height, and maximum culm height. In contrast, wind contributed to relatively high values of culm density and below-ground DW.ConclusionsAlthough wind appeared to inhibit the vertical growth of P. australis through physiological and morphological changes in leaf blades, it seemed that P. australis might compensate the inhibited vertical growth with increased horizontal growth such as more numerous culms, indicating a highly adaptive characteristic of P. australis in terms of phenotypic plasticity under windy environments.

【 授权许可】

CC BY