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当前位置: 首页 > 文章 > 接种菌根真菌对华顶杜鹃幼苗光合特性的影响 浙江林业科技 2017 (6) 69-73
Position: Home > Articles > Effect of Inoculation of Ericoid Mycorrhiza in Rhododendron huadingense Seedlings on Photosynthetic Properties Journal of Zhejiang Forestry Science and Technology 2017 (6) 69-73

接种菌根真菌对华顶杜鹃幼苗光合特性的影响

作  者：
汤梦娴;施霞;顾锦霞;胡瑜瑶;毛梦玲;边才苗
单  位：
台州学院生命科学学院
关键词：
杜鹃花类菌根;华顶杜鹃;叶绿素含量;气体交换参数;光合参数
摘  要：
2016年对1年生华顶杜鹃Rhododendron huadingense幼苗接种杜鹃花类菌根(ERM),测定其对叶绿素含量和光合特性的影响。结果显示,接种苗的叶绿素含量高于对照(未接种),接种苗的叶绿素a/b在弱光下(二层遮荫和三层遮荫)低于对照苗,表明接种ERM有利于华顶杜鹃幼苗捕获光能和对弱光的利用;接种苗的净光合速率(Pn)、气孔导度(Gs)和蒸腾速率(Tr)均比对照苗的高,接种苗的光能利用效率(LUE)和水分利用效率(WUE)也比对照苗的高,而胞间CO2浓度(Ci)比对照苗的低;一层遮荫处理的接种苗Pn,Tr和Gs等指标值最大。表明接种ERM可提高幼苗利用弱光的能力,并增强对强光的抵抗能力。同时,接种苗的表观量子效率(AQY)和最大光合速率(Pnmax)比对照苗的大,而光饱和点(LSP)、光补偿点(LCP)和暗呼吸速率(Rd)比对照苗的小,也表明接种ERM可提高幼苗的光合能力、降低在中强光照下的暗呼吸。试验表明,接种EMR有利于华顶杜鹃幼苗捕获光能,增强其对强光照和弱光照环境的适应能力。
译  名：
Effect of Inoculation of Ericoid Mycorrhiza in Rhododendron huadingense Seedlings on Photosynthetic Properties
作  者：
TANG Meng-xian;SHI Xia;GU Jin-xia;HU Yu-yao;MAO Meng-ling;BIAN Cai-miao;School of Life Sciences, Taizhou College;
关键词：
Ericoid mycorrhiza;;Rhododendron huadingense;;chlorophyll content;;gas exchange parameters;;photosynthetic parameters
摘  要：
Experiments were conducted on inoculation of Ericoid mycorrhiza(ERM) to 1-year Rhododendron huadingense seedlings in 2016.Determinations were implemented on chlorophyll content and photosynthetic properties under different light intensities of inoculated seedling and control(no inoculation). Results showed that chlorophyll content in inoculated seedlings was higher than that in the control, and chlorophyll a/b was lower under two shading covers and three shading covers, indicating that treated seedlings could better capture and use light energy under low light condition. Net photosynthetic rate(Pn), stomatal conductance(Gs), transpiration rate(Tr), light using efficiency(LUE) and water using efficiency(WUE) was higher in the inoculated seedlings than that in the control, while intercellular CO2 concentration(Ci) was lower. Pn, Tr and Gs of seedlings under one shading layer was the maximum, showing that inoculation could increase capture of light. The apparent quantum yield(AQY) and maximum net photosynthetic rate(Pnmax) was higher in the inoculated seedlings, while the light saturation point(LSP), light compensation point(LCP)and the dark respiration rate(Rd) was lower. The experiment demonstrated that inoculation of ERM on R. huadingense seedlings could improve the efficiency of photosynthesis and reduce Rdunder moderate light intensity.

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