Cadmium Tolerance During Seed Germination and Seedling Growth of Schinus molle (Anacardiaceae)

Floresta e Ambiente

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ISSN: 2179-8087
Editor Chefe: João Vicente de Figueiredo Latorraca
Início Publicação: 31/12/1993
Periodicidade: Trimestral

Cadmium Tolerance During Seed Germination and Seedling Growth of Schinus molle (Anacardiaceae)

Ano: 2020 | Volume: 27 | Número: 2
Autores: Gabriel de Resende Baroni; Márcio Paulo Pereira; Felipe Fogaroli Corrêa; Evaristo Mauro de Castro; Fabrício José Pereira
Autor Correspondente: Fabrício Pereira | [email protected]

Palavras-chave: pepper tree; endodermis; heavy metals; phytoremediation; seed anatomy

Resumos Cadastrados

Resumo Inglês:

Cadmium (Cd) is one of the most toxic elements to plants, so Cd-tolerant trees should be used in reforestation or remediation systems. In this study the effects of Cd on seed germination and early seedling growth were evaluated in Schinus molle plants. Seeds of S. molle were treated with Cd at concentrations of 0 (control), 0.01, 0.02, 0.05, and 0.125 mM using Cd(NO3)2. Seed germination parameters and seedling growth traits were evaluated 33 days after the experiment started. Seeds and roots were sampled for anatomical evaluation and processed with plant microtechniques. No effects of Cd were found on the germination percentage of S. molle seeds. However, seedlings’ shoot and root fresh masses and lengths increased with Cd treatment. Cadmium increased root cortex and endodermis thickness and reduced the percentage of vascular tissues in seedlings. Schinus molle seeds and seedlings thus showed tolerance to Cd related to anatomical adaptations.