highly significantP< 0.001
In line with these observations, two-way repeated measures ANOVA demonstrated highly significant effects of red light intensity at constant C i ( F (6,47)=321.93, P< 0.001), C i level ( F (6,36)=39.67, P <0.001) and their interaction ( F (36,282)=9.201, P< 0.001) on the response of g s .