莸与金叶莸主要光合特性的变化  

Variation of Photosynthetic Characteristics of Caryopteris incana and Caryopteris×Clandonensis ‘Worcester Gold'

作　　者：刘艳芬[1] 张喜焕[1] 赵志军[1] 李萌[1] 

机构地区：[1]河北工程大学,河北邯郸056021

出　　处：《贵州农业科学》2015年第1期143-145,共3页Guizhou Agricultural Sciences

摘　　要：为莸与金叶莸在园林绿地中的科学栽培与合理配植提供依据,利用CIRAS-2型便携式光合系统分析仪,对其主要光合特性进行了测定。结果表明:莸与金叶莸晴天的光合速率日变化均为双峰曲线,但光合速率峰值出现的时间不尽相同,二者均具有光合午休现象。莸和金叶莸叶片的光饱点分别为1 597μmol/(m2·s)和1 789μmol/(m2·s);光补偿点分别为83μmol/(m2·s)和56μmol/(m2·s)。金叶莸对强光的适应性比莸广,但水分利用效率低于莸。In order to provide a reference for scientific cultivation and rational allocation of C.incana and Caryopteris × Clandonensis ‘Worcester Gold＇ in garden greens,the main photosynthetic characteristics of the two garden plants were measured using CIRAS-2portable photosynthetic system.The results showed that the diurnal changes in photosynthetic rate of C.incana and Caryopteris Clandonensis Worcester Gold＇presented a double-peak curve in sunny days,but the day time of their photosynthetic rate peak was not the same,and both of them had photosynthetic phenomenon midday breaking＇.Light saturation points of C.incana and Caryopteris×Clandonensis ‘Worcester Gold＇were1 597μmol/（m^2·s）and 1 789μmol/（m^2·s）respectively,1ight compensation points of them were 83μmol/（m^2·s）and 56μmol/（m^2·s）.It was concluded that Caryopteris×Clandonensis‘Worcester Gold＇had a wide adaptability to light intensity,while the moisture utilization efficiency was lower than that of C.incana.

关 键 词：莸 金叶莸 光合特性 

分 类 号：S685.99[农业科学—观赏园艺]