6个仿栗家系光合特性的比较  

Comparative study on six families of Sloanea hemsleyana based on photosynthesis characteristics

作　　者：李志辉[1] 欧日明[1,2] 王佩兰[1] 

机构地区：[1]中南林业科技大学林学院,湖南长沙410004 [2]湖南省林业厅,湖南长沙410007

出　　处：《中南林业科技大学学报》2014年第9期1-5,共5页Journal of Central South University of Forestry & Technology

基　　金：科技部"高产能源植物选育及其资源高效利用"(2006DFA63230)

摘　　要：以6个家系的仿栗为试验材料,通过动态监测4种光合特征参数,对不同家系间仿栗的光合特性进行比较研究,为优良家系的选择与保护提供理论依据。结果表明:仿栗净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)、叶绿素总量(Ct)、叶绿素a/b值(Ca/Cb)在家系间均存在显著的差异;气孔导度、蒸腾速率与净光合速率呈显著正相关,胞间CO2浓度Ci与净光合速率Pn呈显著负相关;仿栗光合特性在家系间存在丰富的遗传变异。综合各方因素,3号家系为所选家系中的最优家系。By taking six families ofSloanea hemsleyana as the tested materials, theirs four kinds of photosynthetic parameters were and monitored and measured, the photosynthetic characteristics of different families were comparatively studied through continuous monitoring in order to provide theoretical basisfor the selection and protection ofS. hemsleyana superior family. The studying results show that there were signiifcant differences of net photosynthetic rate （Pn）, transpiration rate （Tr）, stomatal conductance （Gs）, intercellular CO2 concentration （Ci）, chlorophyll total content （Ct）, the ratio of chlorophyll-a to chlorophyll-b （Ca/Cb）; theGs andTr had signiifcant positive correlation withPn. theCi had asigniifcant negative correlation withPn; there were abundant genetic variations ofS. hemsleyana photosynthetic characteristics among the six families. Comparatively considering all the factors, the no.3 family is the bestone among the selected families.

关 键 词：仿栗 家系 光合特性 光合参数 比较研究 

分 类 号：S718.43[农业科学—林学]