Comportamento de crescimento e teores químicos de mudas híbridas de amarílis em função do nanofertilizante fosfatado e das micorrizas
DOI:
https://doi.org/10.1590/2447-536X.v32.e323065Palavras-chave:
Bulbo, fitoquímicos, folha, Hippeastrum vittatum, raizResumo
Tratamentos específicos podem favorecer e acelerar o crescimento de mudas de amarílis. No presente estudo, mudas híbridas de amarílis foram pulverizadas com 0,5 e 1 g de nanofósforo (Nano-P) e inoculadas com 20 e 40 g de fungos micorrízicos arbusculares (FMA), isoladamente ou em combinação. O Nano-P aplicado isoladamente, afetou significativamente o número de raízes, com o valor observado na dose de 0,5 g, enquanto 1 g promoveu maiores teores de clorofila a e b. A maioria dos constituíntes químicos das raízes, dos bulbos e das folhas foi aumentada pelo Nano-P, enquanto reduções foram observadas nos flavonoides radiculares e nos açúcares solúveis das folhas. As aplicações de FMA influenciaram significativamente as características de crescimento, e 20 g proporcionaram os maiores valores para número de raízes, peso e tamanho dos bulbos, além das dimensões foliares. De modo geral, os FMA reduziram os constituíntes químicos das raízes, ao mesmo tempo que melhoraram os contituíntes químicos dos bulbos e das folhas, especialmente na dose de 20 g, entretanto, 40 g aumentaram a clorofila b e os carboidratos. Além disso, observou-se que a interação entre Nano-P e FMA produziu efeitos mais pronunciados e variáveis do que as aplicações isoladas. O maior número de raízes, proteínas totais, carboidratos totais, açúcares solúveis e fenóis totais nas raízes, bem como açúcares solúveis nos bulbos e nas folhas, foi registrado na combinação de 0,5 g de Nano-P com 0 g de FMA. A combinação com 20 g de FMA resultou no maior comprimento foliar, peso e tamanho do bulbo. Além disso, a maior largura foliar, proteína total do bulbo e indóis totais das raízes foram obtidos com a combinação de 0,5 g de fósforo com 20 g de micorrizas. De modo geral, níveis moderados de Nano-P e FMA, especialemente a combinação de 0,5 g e 20 g, respectivamente, proporcionaram o melhor desempenho de crescimento e metabólico.
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Copyright (c) 2025 Hemn Abdalla Mustafa, Ashtekhwaz Ahmad Sharef, Aram Akram Mohammed, Chnoora Ali Ahmed
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