摘要
采用菌液浇施的方法接种10株桉树内生菌于尾巨桉幼苗。接种30 d后,用GFS3000气体交换—荧光测量系统进行光合作用各项指标的测定。光响应研究表明,不同菌株的最大净光合速率变化范围为9.31-16.37μmol.m-.2s-1;不同菌株的光饱和点变化范围为1 007.23-1 408.65μmol.m-.2s-1;初始量子效率的变化范围为0.023-0.034;暗呼吸速率变化范围为0.01-1.97。CO2响应研究表明,不同菌株的最大净光合速率变化范围为14.45-36.0μmol.m-.2s-1;不同菌株的CO2饱和点变化范围为1 449.49-2 000μmol.mol-1。不同菌株CO2补偿点变化范围为39.72-203.79μmol.mol-1。温度响应研究表明,不同菌株最大净光合速率不尽相同,变化范围为6.69-15.30μmol.m-.2s-1。通过对接种后植株的光响应、CO2响应和温度响应的研究,得出菌株7在各个响应中,光合作用能力均较大程度地高于对照,表明其对促进植株的光合作用效能具有很大的功用。
Ten strains of eucalypt endophytic fungi were inoculated into the seedling of Eucalypt urophylla×E.grandis by the liquid of fungus,various indices of photosynthesis were measured with GFS3000 gas exchange and rluorescence system 30 days later.The study of illumination response indicated： the Pmax of different fungus was between 9.31 and 16.37 μmol · m-2 · s-1.The LSP with different fungus was between 1 007.23 and 1 408.65 μmol · m-2 · s-1.The AQY with different fungus was between 0.023 and 0.034.The Rd with different fungus was between 0.01 and 1.97.The CO2 response indicated： the Pmax with different fungus was between 14.45 and 36.0 μmol · m-2 · s-1.The CSP with different fungus was between 1 449.49 and 2 000 μmol · mol-1.The CCP with different fungus was between 39.72 and 203.79 μmol · mol-1.The study of temperature response indicated： the Pmax of different fungus was between 6.69 and 15.30 μmol · m-2 · s-1.With the result of illumination response,CO2 response and temperature response,the results indicated that No.7 was more than the comparison in photosynthesis ability,which would have the ability to promote the photosynthesis ability.
出处
《福建林学院学报》
CSCD
北大核心
2011年第1期31-37,共7页
Journal of Fujian College of Forestry
基金
教育部博士点学科专项基金(20093515110006)
福建省科技厅重点资助项目(2008N000N)
"林学"国家特色专业建设点及福建省"国家重点学科培育建设学科项目"资助
关键词
光合作用
模型
桉树
光合速率
光响应
CO2响应
温度响应
photosynthesis model
eucalypt
photosynthetic rate
inoculation
light response
CO2 response
temperature response
