文献类型：期刊文献

中文题名：模拟水淹对中华蚊母树生长及光合特性的影响

英文题名：Effect of Flooding on Growth,Photosynthesis and Fluorescence Characteristics of Distylium chinense

作者：刘泽彬[1] 程瑞梅[1] 肖文发[1] 郭泉水[1] 王娜[1]

第一作者：刘泽彬

机构：[1]中国林业科学研究院森林生态环境与保护研究所国家林业局森林生态环境重点实验室

年份：2014

卷号：50

期号：9

起止页码：73-81

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金："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)

语种：中文

中文关键词：水淹;中华蚊母树;生长;光合;荧光

外文关键词：flooding;Distylium chinense;growth;photosynthesis;fluorescence characteristics

分类号：S718.43

摘要：通过设置对照(CK)、持续性水淹(CF)、间歇性水淹(PF)和全淹(FF)4个水淹处理,模拟三峡库区秋冬季消落带土壤水淹变化,研究2年生中华蚊母树的生理生态适应机制。结果表明:不同水淹形式并没有显著影响中华蚊母树的株高和基径,而光合色素含量、光合及叶绿素荧光特性在不同水淹形式下却有所差异,CF和PF植株光合色素含量、净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)、最大光化学效率(Fv/Fm)、光化学猝灭(qP)以及电子传递速率(ETR)均出现了显著下降,但PF植株下降的幅度要小于CF植株,除光合色素含量、Gs和Tr外,其他指标均差异显著,而FF植株光合色素含量、Pn、Gs、Tr、Fv/Fm、qP以及ETR均未受到水淹的影响,与CK植株差异不显著;CF和PF植株叶片非光化学淬灭(qN)未受到水淹的影响,但FF植株叶片qN与CK相比却显著下降。虽然CF植株较其他处理植株叶绿素含量、Pn、Gs、Tr、Fv/Fm、qP以及ETR均下降明显,但水淹处理植株能够通过形成不定根、特化的皮孔以及减少叶片数量来增加耐淹能力。因此,中华蚊母树具有较强的耐淹能力,在不同水淹形式下均表现出一定的适应性和可塑性。
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.