Petterson et al. (2010) have experienced the influence of light intensity on the rate of photosynthesis. Cultivation
methods that can allow more light to reach the lower canopy, might have the potential to increase yield in cucumber
and other high-wire cultivated crops like tomato and sweet pepper. On the other hand, Sun et al. (2014) emphasized
that lower photosynthetic capacity of cucumber leaves from emergence to senescence under low light stress is
probably due to down-regulated of RuBisCO gene expression in transcript and protein levels, and decreased initial
and total activity as well as activation state of RuBisCO. Light intensity influences not only the net photosynthesis
rate, stomatal conductance and internal CO2 concentration, but also leaf areas of plants, soluble protein content or
assimilatory pigments content (Sun et al., 2014). Photosynthesis is closely related to initial RuBisCO activity and
differences in photosynthetic capacities of leaves grown under 600 and 100