| Allelopathy response of four crops to falling flowers in common urban greening trees |
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| DOI：10.7606/j.issn.1000-7601.2021.05.12 |
| Key Words: allelopathy falling flower extract seed soaking germination seedling growth |
| Author Name | Affiliation | | MA Yong | College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | FAN Xiaohui | College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | LIU Zengwen | College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China
Key Laboratory for Agricultural Resources and Environmental Remediation in Loess Plateau of Agriculture Ministry of China, Yangling, Shaanxi 712100, China |
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| Abstract: |
| Using the Petri dish filter paper method, the allelopathy of falling flower extracts of 13 urban greening trees on the seeds of Cucumissativus, Sorghum vulgare, Triticumaestivum and Brassica campestris were studied. The results showed that, the extracts of Malus spectabilis, Magnolia liliflora, Cercis chinensis and Ginkgo biloba had different degrees of allelopathic inhibition on Cucumissativus seed germination and seedling growth (allelopathic effect index RI was between -0.90 and -0.11). The extracts of Magnolia liliflora significantly inhibited Sorghum vulgare seed germination and seedling growth (RI was between -0.76 and -0.14) (P<0.05). The extracts of Magnolia liliflora, Prunus cerasifera Ⅱ and Cercis chinensis inhibited seed germination and seedling growth of Triticumaestivum in different degrees (RI was between -0.87 and -0.13). The extracts of Magnolia liliflora, Prunus cerasifera Ⅱ and Michelia figo had different degrees of inhibition on seed germination and seedling growth of Brassica campestris (RI was between -0.89 and -0.13). After comprehensive evaluation, it was found that the water extracts of Cerasus sp., Amygdalus persica, Prunus cerasifera Ⅰ, Koelreuteria paniculate and Prunus mume promoted the seed germination and seedling growth of at least three receptors, while the water extracts of Malus spectabilis, Magnolia liliflora, Prunus cerasifera Ⅱ, Cercis chinensis, Ginkgo biloba, and Forsythia suspensa inhibited the seed germination and seedling growth of at least three receptors. Therefore, the falling flower extracts of Cerasus sp., Amygdalus persica, Prunus cerasifera Ⅰ, Koelreuteria paniculate and Prunus mume effectively promoted the seed germination and seedling growth of recipient plants, and could be used as preferred species resources for the development of biomass organic fertilizer. |
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