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Chemistry and Industry of Forest Products ›› 2020, Vol. 40 ›› Issue (6): 93-98.doi: 10.3969/j.issn.0253-2417.2020.06.012

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Increasing Resin Effect of Pinus kesiya Royle ex Gordonby Chemical and Biological Compound Tapping Irritant Agent

Chunhua WU1,2, Ruiling WANG1,3, Xu LIN1,4, Xiangyi LIU1,2,*(), Zhifeng ZHENG5   

  1. 1. Key Laboratory of State Forestry Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Kunming 650224, China
    2. School of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
    3. School of Forestry, Southwest Forestry University, Kunming 650224, China
    4. School of Materials Science & Engineering, Southwest Forestry University, Kunming 650224, China
    5. Xiamen Key Laboratory for High-valued Conversion Technology of Agricultural Biomass; College of Energy, Xiamen University, Xiamen 361102, China
  • Received:2020-07-12 Online:2020-12-28 Published:2020-12-29
  • Contact: Xiangyi LIU E-mail:2547574153@qq.com

Abstract:

Chemical tapping irritant agent which consisted of rare earth nitrate containing trace elements and biological tapping irritant agents(ethephon and α-naphthylacetic acid) were used in the tapping of P. kesiya, and the mean annual rate of increasing resin after tapping chemical tapping irritant and ethephon could reach 29.7%. The physiological indexes of P. kesiya treated with tapping irritant agent were tested. The results showed that after application of tapping irritant agent, the photosynthesis of pine was promoted, the dry weight of pine needles and the content of chlorophyll were increased by 11.2% and 5.6% respectively, and the transformation of soluble sugar into resin was promoted. The contents of superoxide dismutase(SOD), peroxidase(POD) and catalaes(CAT) in leaves of P. kesiya increased by 108.6%, 87.3% and 104.8%, respectively. Thus, the adaptability and resistance of P. kesiya to environment were improved, and the ability of resin production was improved.

Key words: Pinus kesiya Royle ex Gordon, tapping irritant agent, peroxidase, superoxide dismutase, increasing resin effect

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