Journal of Zhejiang Agricultural Sciences ›› 2026, Vol. 67 ›› Issue (2): 332-336.DOI: 10.16178/j.issn.0528-9017.20240645

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Effect of 1,8-naphthalene dicarboxylic anhydride on free radicals scavenging in tobacco under quinclorac stress

LYU Chunfang1(), LI Haixia1, MENG Nan2, WANG Xiaojun3, LIU Huashan1()   

  1. 1.College of Life Sciences,Henan Agricultural University,Zhengzhou 450046,Henan
    2.College of Landscape Architecture and Art,Henan Agricultural University,Zhengzhou 450046,Henan
    3.College of Agronomy,Henan Agricultural University,Zhengzhou 450046,Henan
  • Received:2024-08-07 Online:2026-02-28 Published:2026-03-07

Abstract:

To investigate the effects of 1,8-naphthalene dicarboxylic anhydride(NA)on the scavenging rate of superoxide anion radicals and hydroxyl radicals,as well as the antioxidant rate in tobacco leaves under quinclorac stress,K326 flue-cured tobacco was used as the material. A pot experiment was conducted by spraying NA at the eight-leaf stage,with three treatments established:normal treatment(normal soil + clean water),stress treatment(stressed soil + clean water),and NA reparative treatment(stressed soil + NA). The results showed that the scavenging rate of free radicals and the antioxidant rate in tobacco leaves increased with prolonged treatment. The order of scavenging rates of superoxide anion radicals,hydroxyl radicals,and antioxidant rates was as follows:normal treatment > NA reparative treatment > stress treatment. This study showed that NA treatment promoted free radical scavenging in tobacco leaves under quinclorac stress,thereby having a certain reparative effect on tobacco.

Key words: quinclorac, 1, 8-naphthalene dicarboxylic anhydride, tobacco, free radical

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