Table 2: Analysis-of-variance ( -values) for chlorophyll (Chl), net photosynthetic rate ( ), stomatal conductance ( ), intercellular CO2 concentration ( ), maximal quantum yield of PSII photochemistry , PSII maximum efficiency ( ), effective quantum yield of PSII photochemistry ( ), and nonphotochemical quenching (NPQ) between/among years and treatments.

Source of variationdfDMPAYieldChl NPQ

Cultivation mode3421.55***351.21***163.10***141.22***13.73***20.91***45. 72***143.24***178.31***16.43***
Year14.15ns3.78ns2.27ns4.25ns0.03ns0.26ns2.28ns2.65ns0.89ns0.07ns
C × Y33.11ns2.41ns1.05ns0.32ns0.57ns0.47ns2.94ns3.56*1.17ns0.08ns

Significance difference at .
***Significance difference at .
nsNonsignificant differences.