Interference of Pteridium arachnoideum (Kaulf.) Maxon. (Dennstaedtiaceae) on the establishment of rainforest trees

Brazilian Journal of Biology

Dm. Silva Matos¹  Ta. Belinato¹ 

[1] ,Universidade Federal de São Carlos Departamento de Botânica São Carlos SP ,Brazil

关键词: invasive species;    Pteridium arachnoideum;    tropical trees;    bracken;    germination;    seedlings;    espécies invasoras;    Pteridium arachnoideum;    árvores tropicais;    samambaião;    germinação;    plântulas;   

DOI  :  10.1590/S1519-69842010000200012

来源: SciELO

【 摘 要 】

In order to identify the effect of P. arachnoideum, we studied 11 native tree species commonly used in reforestation projects. Bioassays were conducted in laboratory to evaluate the effect of bracken leachate on the germination and morphology of seedlings. Juveniles of some of these species were planted in two adjacent but contrasting areas in relation to the dominance of P. arachnoideum. The evaluation of growth and survivorship was performed after six and twelve months. This study reveals that for some pioneer and secondary trees P. arachnoideum leachate exerted an inhibitory effect on seed germination and seedling morphology. Field experiments revealed that pioneers are apparently more resistant to P. arachnoideum leachate than secondary species.

【 授权许可】

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