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Chemical Composition and Allelopathic, Phytotoxic and Pesticidal Activities of Atriplex cana Ledeb . (Amaranthaceae) Essential Oil
Author(s) -
Wei Caixia,
Zhou Shixing,
Li Wenjun,
Jiang Chunyu,
Yang Wan,
Han Caixia,
Zhang Chi,
Shao Hua
Publication year - 2019
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.201800595
Subject(s) - allelopathy , germination , amaranthaceae , chemistry , essential oil , echinochloa , bioherbicide , poa annua , atriplex , botany , composition (language) , horticulture , weed , food science , biology , linguistics , philosophy
The chemical composition and allelopathic, phytotoxic and pesticidal activities of Atriplex cana Ledeb . (Amaranthaceae) essential oil were investigated. Nineteen compounds were identified via GC/MS, representing 82.3 % of the total oil, and the most abundant constituents were dibutyl phthalate (21.79 %), eucalyptol (20.14 %) and myrtenyl acetate (15.56 %). The results showed that volatile organic compounds (VOCs) released by A. cana significantly inhibited seedling growth of Amaranthus retroflexus L. and Poa annua L., and 80 g of fresh stems and leaves of A. cana in a 1.5 L airtight container almost completely suppressed the seed germination of both plants. Meanwhile, 5 μg/mL essential oil completely inhibited the seed germination of A. retroflexus , Medicago sativa L., P. annua and Echinochloa crusgalli L. Pesticidal testing revealed that the essential oil had strong behavioral avoidance and lethal effects on Aphis pomi DeGeer . Five microliters of essential oil/Petri dish treatment resulted in an 84.5 % mortality rate after 12 h, and the mortality rate reached nearly 100 % after 48 h. This report is the first one on the chemical composition as well as the biological activity of the essential oil of A. cana , and our results indicate that the oil is valuable in terms of being further exploited as a bioherbicide/insecticide.