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| Format: | Artículo científico |
| Language: | en |
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Academia Brasileira de Ciências
2017
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| Online Access: | https://www.redalyc.org/articulo.oa?id=32751197012 |
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Table of Contents:
- N deposition affects allelopathic potential of Amaranthus retroflexus with different distribution regions CONGYAN WANG JUN LIU JIAWEI ZHOU Multidisciplinaria (Ciencias Naturales y Exactas) N deposition invasive plant seed germination Allelopathic potential Amaranthus retroflexus This study aims to determine the allelopathic potential of Amaranthus retroflexus (Ar) with different climatic zones on seed germination and growth of A. tricolor (At) treated with a gradient N addition. Ar leaf extracts only displayed significantly allelopathic potential on the underground growth of Ar but not the aboveground growth of At. The allelopathic potential of Ar leaf extracts on root length of At were enhanced under N addition and there may be a N-concentration-dependent relationship. The effects of the extracts of Ar leaves that collected from Zhenjiang on seed germination and growth of At may be higher than that collected from Jinan especially on root length of At under medium N addition. This reason may be the contained higher concentration of secondary metabolites for the leaves of plants that growths in high latitudes compare with that growth in low latitudes. This phenomenon may also partly be attributed to the fact that Ar originated in America and/or south-eastern Asia which have higher similarity climate conditions as Zhenjiang rather than Jinan. The allelopathic potential of Ar on seed germination and growth of acceptor species may play an important role in its successful invasion especially in the distribution region with low latitudes. 2017 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32751197012 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.2 Vol.89