RT Journal T1 THE EFFECT OF PROTECTION FILM ON THE ADAPTATION OF ‘HANFU’ APPLE TREES UNDER LOW TEMPERATURE A1 X. Zhang A1 H. Ma A1 D. Lü A1 S. Qin A1 G. Du A1 G. Liu JF Journal of Animal and Plant Sciences JO JAPS SN 1018-7081 VO 25 IS 3 SP 220 OP 225 YR 2015 FD 2015/06/01 DO DOI NA AB

In this study, ‘Hanfu’ apple trees were used as a test material to determine the effect of a functional protective film on the ability of the trees to withstand temperatures below zero. The functional protective film is a quaternary copolymer prepared by emulsion polymerization of vinyl acetate (Vac), butyl acrylate (NbA), methyl methacrylate (MMA) and acrylic acid (AA). The resulting copolymer was modified by adding a thermal insulation material (ceramic powder) to enhance the insulating properties of the film. Compared with a control, application of various quantities of the protective film resulted in as much as 2.5℃ decrease in the semi lethal temperature for ‘Hanfu’ trees. The insulating protective coating effectively reduced the MDA (malondialdehyde) content and significantly increased the activities of antioxidant- enzyme in the tree branches, which improved the low-temperature adaptability of the plants helping them to maintain normal physiological functioning. In the four treatments, protective films with the addition of 4% and 6% thermal insulation offered better protective effects

K1 Protection film, Thermal insulation, ‘Hanfu’ Apple, Low-temperature stress, Semi lethal temperature PB Pakistan Agricultural Scientists Forum LK https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-333