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Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (2): 35-41.doi: 10.11924/j.issn.1000-6850.casb18010023

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Effect of Allelochemicals of Picea schrenkiana Forests on Seed Germination in Tianshan

  

  • Received:2018-01-04 Revised:2018-03-05 Accepted:2018-03-12 Online:2019-01-11 Published:2019-01-11

Abstract: The paper aims to explore the effects of allelochemicals of Picea schrenkiana forests on seed germination of plants. The seeds of Picea schrenkiana, two kinds of monocotyledon seeds (Sorghum sudanese, wheat) and two kinds of dicotyledon seeds (mooli, chili) were used as the materials, the authors analyzed the effects of 7 kinds of allelochemicals of Picea schrenkiana on seed germination by using Petri dish and filter paper method. The results showed that: the 7 kinds of allelochemicals significantly inhibited the germination rate of seeds of Sorghum sudanese, chili and Picea schrenkiana and the inhibition was enhanced with the increase of the concentration of allelochemicals, however, they had a little influence on the seeds of wheat and mooli, which originally had high germination rate. The autotoxicity of the 7 kinds of allelochemicals was stronger than their allelopathic effect. The general trend of intensity of allelopathic effect from 3 kinds of allelochemicals on monocotyledon and dicotyledon was: coumarins>ketones>phenolic acids; there was a great difference in the inhibitory intensity of different phenolic acids on seed germination. The allelochemicals of Picea schrenkiana have different intensities of allelopathic effect on seeds of 5 kinds of plants and the intensity of allelopathic effect is closely related to the species and concentration of allelochemicals.

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