Nanosílica potencializa o crescimento, as características epidérmicas das folhas e a resistência a doenças em cultivares de Aglaonema
DOI:
https://doi.org/10.1590/2447-536X.v32.e323088Palavras-chave:
Araceae, elemento benéfico, micromorfologia, nanotecnologia, planta ornamenta, resistência de plantasResumo
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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Copyright (c) 2026 Rahmawati Sainuddin, Sachio Sachio, Dewi Sukma, Roni Kartiman, Megayani Sri Rahayu

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