Nanosílica potencializa o crescimento, as características epidérmicas das folhas e a resistência a doenças em cultivares de Aglaonema

Autores

DOI:

https://doi.org/10.1590/2447-536X.v32.e323088

Palavras-chave:

Araceae, elemento benéfico, micromorfologia, nanotecnologia, planta ornamenta, resistência de plantas

Resumo

Aglaonema é uma planta ornamental de alto valor, com variação no crescimento e nas respostas fisiológicas entre cultivares. A sílica é um elemento benéfico que melhora o crescimento, fortalece tecidos, aumenta a eficiência fotossintética e resistência a estresses bióticos e abióticos. Este estudo avaliou os efeitos da aplicação de nanosílica (SiO2) no crescimento, características epidérmicas das folhas e resistência a doenças da Aglaonema. O experimento foi conduzido em delineamento de parcelas subdivididas, disposto em delineamento em blocos casualizados, com quatro concentrações de nanosílica (0; 0,3; 0,6; 0,9 g L-1) como parcelas principais e 16 cultivares como subparcelas. Houve diferenças significativas entre as cultivares para altura da planta, número de folhas, comprimento das folhas, clorofila a, clorofila b, clorofila total, relação clorofila a/b e carotenóides. A nanosílica a 0,3 g L-1 aumentou altura da planta, densidade estomática, relação clorofila a/b e carotenóides, enquanto 0,6 g L-1 elevou espessura epidérmica e teor de clorofila. A concentração alta (0,9 g L-1) aumentou comprimento e largura das folhas, índice estomático, resistência a Lepidosaphes beckii, Ceroplastes rubens e Pseudococcidae, além de reduzir antracnose e podridão do caule. As interações cultivares × nanosílica foram significativas para largura da folha, espessura epidérmica, índice e densidade estomática. A análise de correlação revelou relações positivas entre tamanho da folha, altura da planta, densidade estomática e teor de clorofila. Considerando a preferência do consumidor por plantas compactas, folhas largas e alta resistência a pragas e doenças, a aplicação foliar de nanosílica a 0,9 g L-1 é recomendada como concentração adequada.

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Biografia do Autor

Rahmawati Sainuddin, IPB University

Department of Agronomy and Horticulture, Bogor, Indonesia.

Sachio Sachio, IPB University

Department of Agronomy and Horticulture, Bogor, Indonesia.

Dewi Sukma, IPB University

Department of Agronomy and Horticulture, Bogor, Indonesia.

Roni Kartiman, National Research and Innovation Agency-Indonesia (BRIN)

Research Organization for Life Science and Environment, Research Center for Applied Botany, Bogor, Indonesia.

Megayani Sri Rahayu, IPB University

Department of Agronomy and Horticulture, Bogor, Indonesia.

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Publicado

2026-09-09

Como Citar

Sainuddin, R., Sachio, S., Sukma, D., Kartiman, R., & Rahayu, M. S. (2026). Nanosílica potencializa o crescimento, as características epidérmicas das folhas e a resistência a doenças em cultivares de Aglaonema. Ornamental Horticulture, 32, 1–11. https://doi.org/10.1590/2447-536X.v32.e323088

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