Study On The Wound Healing Agent For Apple Trees (Malus Pumila Mill)

It was unfavourable effect for the growth of apple tree to gain the wounds by pruning or mechanical harm. The germs could easily invade the trunk by these wounds, which made the apple tree from weekness to death. It was conducted to study the effects of four kinds of wound healing agent on wound healing of apple tree. The mechanism for wound healing of apple tree was also advanced. These were useful to solve the problem of the wounds in apple trees in the field. The results of studies showed as follows:1. Both emulsion and paste were regarded as substrate of wound healing agent. The formula of emulsion was Petrolatum, Lanolin, Cetyl-alcohol, Liquid-paraffin, Tween-80 and H2O. The formula of paste was Petrolatum, Agar and HaO. The effect of wound healing from emulsion was better than that of paste.2. The relation of five factors, which was somafostatin, BA, mineral nutrition, sucrose and germicide, were possitive correlation.The correlation analysis between mineral nutrition and sucrose was significant. So we supposed that five factors promoted wound healing of apple tree together and the synergic effect of wound healing between mineral nutrition and sucrose was strongest among all factors. The regression equations of four kinds of wound healing agent were as follows.(1) emulsion No. 1 -16Y=4.528729-0.169321A-0.148780B-0.556384C+87.55696D-44.405086E (2)emulsion No. 17-32Y=2.995738+0.045395A-0.267478B+1.093046C-45.337554D+48.010775E (3)PasteNo.l-16Y=3.368131+0.246876A-0.676946B+0.227602C+71.252530D-170.171357E(4)Paste No. 17-32Y=2.844327+0.025302A+0.313270B-0.376640C-16.415726D+39.696884E (Note: Y-the rate of wound healing A-2,4-D B-B A C-mineral nutrition D-sucrose E-germicide)3. Both 2,4-D and NAA could promote wound healing of apple tree under consistency controlled. Mineral nutrition and sucrose could help the growth of callus, from which the tree was easily suffered parasitic diseases that were harmful to heal the wound. The germicide could inhibit the germs and harm the apple tree, so we must control its consistency.4. The rate of wound healing of four agent treatments (No. 10,11,27,29, in emulsion type) to natural control was respectively 4.26 , 4.43 , 3.67, 4.67, which could tell us the effects of four formulases on wound healing of apple tree is good.5. The promoting effects of Petrolatum, Lanolin and Oil-coating on wound healing of apple tree were not significant.