research paper
results showed that after spraying plant growth regulations,leaf get shorter and widened, leaf area percentage lowered on top and middle of plant reduced and ascended on the bottom, stem height showed an opposite change with leaf area. Leaf area index (LAI) and leaf area duration (LAD) were reduced before silking then exceed after silking, thus, light distribution within plant increased and activity of PEPCase , RIBPCase were improved.