生态学杂志2017，Vol.36Issue(6)：1495-1502,8.DOI:10.13292/j.1000-4890.201706.033
樟树幼苗对干旱胁迫和种植密度的生理响应
Physiological responses of Cinnamomum camphora seedlings to drought stress and planting density
摘要
Abstract
In order to understand the mechanism of physiological response of plants to drought stress,one-year-old Cinnamomum camphora seedlings with different planting densities (10,20,40,80 seedlings · m-2) were grown in drought stress environments by manual simulation,and their physiological indices were determined at 4,8,12,16,20 d after drought stress.The results showed that the water content of seedlings under drought stress decreased with the extension of drought duration and the decrease amplitude increased with increasing planting density in each drought stage.The chlorophyll content of seedlings except for the density of 10 trees · m-2 increased and then followed by a decrease with increasing drought duration,and the variation amplitude increased with increasing density.Soluble sugar,soluble protein contents and SOD activity of seedlings under different planting densities increased with increasing drought duration,whereas their proline and MDA contents tended to increase,and the variation amplitude of these indices increased with increasing density.Generally,the drought resistance of C.camphora decreased with increasing density of seedlings.关键词
幼苗/干旱胁迫/密度/生理响应/樟树Key words
seedling/drought stress/density/physiological response/Cinnamomum camphora引用本文复制引用
王卓敏,郑欣颖,薛立..樟树幼苗对干旱胁迫和种植密度的生理响应[J].生态学杂志,2017,36(6):1495-1502,8.基金项目
中央财政林业科技推广示范项目“广东省生态公益林培育技术推广”[2015] GDTK-07号资助. （）
