应用生态学报2012，Vol.23Issue(4)：953-958,6.
模拟冬季低温和夜间退潮对无瓣海桑幼苗的协同作用
Synergistic effects of low temperature in winter and ebb tide at night on Sonneratia apetala seedlings growth and key eco-physiological traits
摘要
Abstract
By setting up a set of simulated tidal systems with different air- and water temperature and tidal flood conditions, this paper studied the synergistic effects of low temperature in winter and ebb tide at night on the growth and key eco-physiological traits of Sonneratia apetala seedlings. Low air temperature depressed the seedlings growth, but the reduction in the seedling height and basal stem diameter was compensated 41. 2% and 44.6% , respectively by a 5 ℃ increase of water temperature. Low air temperature (15 ℃) reduced the leaf Fv/Fm significantly, indicating a dramatic reduction in the leaf photosynthetic capacity, whereas the flooded tide with higher water temperature could not compensate this damage. The flooded tide with high air temperature increased the proline and soluble sugar contents in mature leaves, which could protect the mature leaves from cold damage. When extreme cold events occurred, the flooded tide at night worked as a heat storage medium, which alleviated the cold damage on the seedlings growth and leaf physiological traits, and promoted the survival rate of S. apetala seedlings.关键词
红树林/无瓣海桑/寒害/潮汐/叶绿素荧光/可溶性糖/脯氨酸Key words
mangrove/ Sonneratia apetala/ cold damage/ tide/ chlorophyll fluorescence/ soluble sugar/ proline分类
农业科技引用本文复制引用
陈鹭真,杜晓娜,陆銮眉,郑仕杰,杨盛昌..模拟冬季低温和夜间退潮对无瓣海桑幼苗的协同作用[J].应用生态学报,2012,23(4):953-958,6.基金项目
国家自然科学基金项目(30700092)和福建省自然科学基金项目(2009J05085)资助. （30700092）
