Allelopathic Potential of the Invasive Exotic Species Cryptostegia madagascariensis Bojer on the Germination of Native Cactus Caatinga Species

Authors

  • Maria Gabriela Dos Passos Santos Universidade Federal de Sergipe, Campos Universitário Professor Alberto Carvalho. SE, Brazil. https://orcid.org/0000-0001-5527-2183
  • Maria Liliane Dos Santos Alves Universidade Federal de Sergipe, Campos Universitário Professor Alberto Carvalho. SE, Brazil. https://orcid.org/0000-0001-9554-2192
  • Lara Fabian Rodrigues De Jesus Universidade Federal de Sergipe, Campos Universitário Professor Alberto Carvalho. SE, Brazil. https://orcid.org/0000-0002-0595-3527
  • Rony Dos Santos Nascimento Universidade Federal de Sergipe, Campos Universitário Professor Alberto Carvalho. SE, Brazil. https://orcid.org/0000-0001-5760-3804
  • Gabrielle Santos De Jesus Universidade Federal de Sergipe, Campos Universitário Professor Alberto Carvalho. SE, Brazil. https://orcid.org/0009-0001-8769-8434
  • Juliano Ricardo Fabricante Universidade Federal de Sergipe, Campos Universitário Professor Alberto Carvalho. SE, Brazil. https://orcid.org/0000-0003-4767-7302

Abstract

Allelopathy is considered a competitive mechanism. Thus, this study aimed to evaluate the allelopathic effect of C. madagascariensis on the germination of Xiquexique gounellei and Pilosocereus catingicola. Initially, C. madagascariensis leaves were dried, ground, and used to prepare extracts at concentrations of 0%, 5%, 10%, 15%, and 20%. The experiment followed a completely randomized design (CRD) with four replications of 25 seeds for each native species. Germination was monitored daily. Based on the collected data, germination percentage, germination time, emergence speed index, and uniformity coefficient were calculated and subjected to analysis of variance followed by Tukey’s mean test (p ≤ 0.05). The extracts of C. madagascariensis affected the germination percentage of X. gounellei and P. catingicola from a concentration of 10%. The emergence speed index of X. gounellei and P. catingicola seeds was influenced at concentrations of 5% and 10%, respectively. X. gounellei exhibited a reduced uniformity coefficient at 20%, whereas P. catingicola seeds remained unaffected, as did the germination time of both species. These findings demonstrate that C. madagascariensis leaves contain allelochemicals capable of impacting the native species germination. Therefore, the removal of this invasive exotic species is essential to mitigate its ecological damage to the Caatinga biome. 

Keywords: Biological Invasion. Allelopathy. Chemical Compounds.

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References

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Published

2025-08-11

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DOS PASSOS SANTOS, Maria Gabriela; DOS SANTOS ALVES, Maria Liliane; RODRIGUES DE JESUS, Lara Fabian; DOS SANTOS NASCIMENTO, Rony; SANTOS DE JESUS, Gabrielle; FABRICANTE, Juliano Ricardo. Allelopathic Potential of the Invasive Exotic Species Cryptostegia madagascariensis Bojer on the Germination of Native Cactus Caatinga Species . Ensaios e Ciência: Ciências Biológicas, Agrárias e da Saúde, [S. l.], v. 29, n. 3, p. 694–701, 2025. Disponível em: https://ensaioseciencia.pgsscogna.com.br/ensaioeciencia/article/view/13834. Acesso em: 19 aug. 2025.

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Vol. 29 No. 3 (2025)

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Copyright (c) 2025 Maria Gabriela Dos Passos Santos, Maria Liliane Dos Santos Alves, Lara Fabian Rodrigues De Jesus, Rony Dos Santos Nascimento, Gabrielle Santos De Jesus, Juliano Ricardo Fabricante

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