光皮树无性系光响应特性研究  

Research of Light-Response Properties of Photosynthesis about Clones of Cornus wilsoniana

作　　者：林军 张应中[2,3] 邓文剑 吴林瑛 王明怀[2,3] 何祯祥[4] 张良波[5,6] 

机构地区：[1]乐昌市龙山林场,广东乐昌512221 [2]广东省森林病虫害生物防治重点实验室,广东广州510520 [3]广东省林业科学研究院,广东广州510520 [4]南京大学生命科学学院,江苏南京210093 [5]湖南省林业科学院,湖南长沙410004 [6]湖南省生物柴油工程技术研究中心,湖南长沙410004

出　　处：《林业与环境科学》2016年第3期19-23,共5页Forestry and Environmental Science

基　　金：广东省省级科技计划项目"油料植物光皮树良种资源收集与无性系选育"(2014A020208033)

摘　　要：对光皮树(Cornus wilsoniana)3个无性系GY8040、JX3、JX7的6 a生植株开展光响应测定,利用直角双曲线修正模型及非直角双曲线模型分别进行模拟。结果表明,两种模型模拟符合度高,直角双曲线修正模型参数与实测值误差较小,且能直接模拟饱和光强,具较强的适用性。3个光皮树无性系光补偿点分别为24.98,17.27,20.21μmol·m^(-2)·s^(-1),光饱和点分别为1 649.02,2 692.32,1 533.69μmol·m^(-2)·s^(-1),最大净光合速率分别为15.43,21.70,14.21μmol·m^(-2)·s^(-1),JX3光补偿点最低,光饱和点最高,具有较高的光能利用效率。The rectangular hyperbola correction model and non-rectangular hyperbola model were used to stimulate the light-response data of 3 6-year-old clones of Cornus wilsoniana （ GY8040, JX3 and JX7 ）. The results showed that two models stimulated the light-response data fittly and the error between the stimulating data and measured data were small. Moreover, the rectangular hyperbolic correction model was able to stimulate saturation light intensity directly, indicating a good applicability of this model. The light compensation points of 3 clones were 24. 98, 17. 27, 20. 21 μmol . m^-2 . s ^-1, the light saturation points were 1 649. 02, 2 692. 32, 1 533.69 μmol . m^ -2 s^-1μmol . m^-2 . s^-1, the maximum net photosynthetic rate were 15.43, 21.70, 14.21 respectively. The light compensation point of JX3 is the lowest and the light saturation point of which means that the clone JX3 has better light-energy utilization efficiency.

关 键 词：光皮树 光合作用 光响应 光补偿点 光饱和点 

分 类 号：S718.4[农业科学—林学]