Photosynthetic characteristics of super-high-yield rubber budding tree.
Zifan Liu, Jun Wang, Lin Weifu · Journal of Fujian Agriculture and Forestry University · 2009
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 supper-high-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.