林业科学Issue(9)：73-81,9.DOI:10.11707/j.1001-7488.20140910
模拟水淹对中华蚊母树生长及光合特性的影响
Effect of Flooding on Growth,Photosynthesis and Fluorescence Characteristics of Distylium chinense
摘要
Abstract
Four flooding treatments ( control,CK; continuous flooding,CF; periodic flooding,PF; and Full flooding, FF) were set in simulating the soil flooding change of the riparian zone in the Three Gorges Reservoir region of China to study the physiological and ecological adaptation mechanisms of two-year-old perennial Distylium chinense seedlings to the soil flooding change. There were no significant differences in height and basal diameter of the seedlings grown under different water regimes,while the content of chlorophyll,photosynthesis and fluorescence characteristics under different flooding forms were significantly different. Chlorophyll content,net photosynthetic rate(Pn),stomatal conductance(Gs), transpiration rate(Tr),maximal photochemical efficiency (Fv/Fm),photochemical quenching (qP) and electron transfer rate ( ETR) in CF and PF decreased significantly,and the decrease in PF was smaller than CF. In addition to chlorophyll content,Gs and Tr,the other indicators were significantly different; Chlorophyll content,Pn,Gs,Tr,Fv/Fm,qP and ETR in FF were not significantly different compared with CK;Non-photochemical quenching ( qN ) in CF and PF was not significantly different from CK,while the qN in FF was decreased significantly. Although the chlorophyll content,Pn,Gs, Tr,Fv/Fm,qP and ETR in CF decreased significantly compared with the other treatments,the plants were able to form adventitious roots,hypertrophic lenticels and reduce the leaf increment to enhance resilience to flooding. Thus,D. chinense has strong tolerant capabilities to submergence,and shows a certain adaptability and plasticity in different flooding forms.关键词
水淹/中华蚊母树/生长/光合/荧光Key words
flooding/Distylium chinense/growth/photosynthesis/fluorescence characteristics分类
农业科技引用本文复制引用
刘泽彬,程瑞梅,肖文发,郭泉水,王娜..模拟水淹对中华蚊母树生长及光合特性的影响[J].林业科学,2014,(9):73-81,9.基金项目
“十二五”国家科技支撑计划课题“长江流域防护林体系整体优化与调控技术”(2011BAD38BO4)。 （2011BAD38BO4）
