超高产橡胶芽接树的光合特性  

Photosynthetic characteristics of supper-high-yield rubber budding tree

作　　者：刘子凡[1] 王军[2] 林位夫[2] 

机构地区：[1]海南大学农学院,海南儋州571737 [2]中国热带农业科学院橡胶研究所,海南儋州571737

出　　处：《福建农林大学学报（自然科学版）》2009年第4期376-379,共4页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：海南省自然科学基金(30815);中央级公益性科研院所基本科研业务专项和公益性行业(农业)科研专项经费(nyhyzx07-033-6)资助

摘　　要：用LI-6400测定了超高产橡胶芽接树PB86茎干(接穗)割面涂乙烯利刺激剂后的叶片光合参数.结果表明,普通芽接树和超高产橡胶芽接树叶片净光合速率(Pn)、气孔导度(Gs)和蒸腾速率(Tr)均具有随着光照强度增加而增大,胞间CO2浓度(C i)则随之下降的趋势;超高产橡胶芽接树叶片的Pn、Gs、Tr和C i均大于普通芽接树,且有随光照强度增强差异增大的趋势.超高产橡胶芽接树光饱和点(LSP)与普通芽接树有显著差异.以上表明,在乙烯利刺激下,超高产橡胶芽接树能充分利用有效辐射.The photosynthetic parameters of the supper-high-yield rubber budding tree （PB86）, after treating with ethephon （CEPHA） on the tapping panel, were determined. The result showed that with the enhancing of PAR the net photosynthetic rate （Pn）, stomatal conductance （Gs） and transpiration rate （Tr） of leaf tended to increase while intercellular CO2 concentration （Ci） decreased in both of the supper-high-yield rubber budding tree and general budding trees. But the Pn, Gs and Tr of leaf of supperhigh-yield rubber budding tree were greater than that of general budding trees, and the difference increased with the PAR intensifing and the LSP was significantly different between supper-high-yield rubber budding tree and general budding trees. This showed that the supper-high-yield rubber budding tree could more efficiently utilize PAR after it was treated with ethephon. And it might be one of the factors that involve the phenomena of supper high yield of rubber.

关 键 词：橡胶树 高产 光合特性 

分 类 号：S794.1[农业科学—林木遗传育种]