为了探讨中国大面积推广应用的3个橡胶树品种的叶绿素荧光特性，为橡胶树的耐逆性研究奠定基础，利用叶绿素荧光技术研究了GT1、RRIM600、PR107 3个橡胶树品种的叶片叶绿素荧光特性。结果表明：GT1的叶片表观电子传递速率(ETR)显著的高于其他2个品种，PSII实际光合量子产量Y(II)、非光化学反应耗散Ex稍高于其他2个品种；RRIM600的叶片Fv/Fm、Fo、Fm、Fv、Fv/Fo、Y(NPQ)、qP都略高于其他2个品种，而qN显著高于其他2个品种。说明GT1的光合作用中原初光能捕获效率、电子传递能力较强于其他2个品种，吸收的光能中用于光化学反应部分较少；RRIM600的光合潜能、光适应能力强于其他2个品种，当条件适宜时，叶片可能合成更多的光合产物来供应树体生长的需要和胶乳的合成。

In order to investigate the chlorophyll fluorescence characteristics of 3 Hevea brailiensis cultivars adopted universally in China, it will lay a foundation for the research on resistance of rubber tree. In this study, the chlorophyll fluorescence characteristics of three Hevea brailiensis cultivars, GT1, RRIM600, PR107 were investigated by using the chlorophyll fluorescence technique. The results showed that: the apparent electron transport rate (ETR) in the leaves of GT1 was significantly higher than the other two cultivars, the PSII actual photosynthetic quantum yield Y(II) and non-photochemical reaction dissipation (Ex) were slightly higher than the other two cultivars; the Fv/Fm, Fo, Fm, Fv, Fv/Fo, Y(NPQ), qP in the leaves of RRIM600 were slightly higher than the other two cultivars, while qN was significantly higher than the other two cultivars. All those indicated that the primary light energy capture efficiency and electron transfer ability in GT1 were higher than the other two cultivars, the proportion of the absorption of light energy for photochemical reaction was less; the photosynthetic potential and light adaption in the leaves of RRIM600 were better than the other two cultivars, more photosynthate for the growth of tree and the synthesis of latex might be synthesized by leaves under the suitable condition.