Figure 1: The contents of soluble protein and POD activity in the nongrafted and grafted cuttings. H1: cuttings harvested on June 17; H3: cuttings harvested on July 27; H5: cuttings harvested on September 5; means and standard errors calculated from three replicates. Significance ( ) indicated by lower case lettering ((a), (b)), derived using the Duncan’s multiple range test.