淹水对中华蚊母树生长及生理的影响  

Flooding Effect on Growth and Physiology of Distylium chinesis

作　　者：陈桂芳[1] 蔡孔瑜[1] 李在军[1] 娄利华[1] 

机构地区：[1]重庆市林业科学研究院三峡库区森林生态保护与恢复重点实验室,重庆400036

出　　处：《西南林学院学报》2008年第5期42-44,共3页Journal of Southwest Forestry College

基　　金：重庆市自然科学基金项目(CSTC;2006BB1425)资助

摘　　要：通过盆栽淹水试验,对中华蚊母树部分生长及生理指标进行研究.结果表明:淹水处理的前3个月,植株株高生长明显受抑制;淹水5个月后,苗木保存率在98.6%以上;随淹水时间延长,不同淹水强度下叶绿素含量均呈下降趋势;叶片相对电导率随淹水时间延长和强度增大而增加;脯氨酸含量随淹水时间延长而不断积累,但不同淹水强度对其影响程度各异.中华蚊母树是一种耐水淹能力较强的植物,适合在水位波动地区种植.Flooding effect on growth and some physiological indexes of Distylium chinesis were studied by pot experiments. The results showed that the height growth of Distylium chinesis seedlings was significantly inhibited after the flooding lasted for three months ; the seedling survival rate was above 98.6% after having been flooded for 5 months. The chlorophyll content declined, while the relative electric conductivity increased along with the time extension and strengthening of the flooding. The content of free prolines increased gradually along with flooding time extension, but different degree of flooding had different effects on it. The study showed that Distylium Chinese is a tree species with strong tolerance against flooding, which could be planted along river and reservoir banks where water level fluctuates frequently.

关 键 词：中华蚊母树 淹水胁迫 生长 生理 

分 类 号：Q945.11[生物学—植物学]