Qualidade de hastes florais de lisianthus (Eustoma grandiflorum Raf.) inoculadas com Bacillus subtilis e Glomus intraradices
DOI:
https://doi.org/10.1590/2447-536X.v28i4.2498Palavras-chave:
desenvolvimento vegetal, fungos micorrízicos arbusculares, planta ornamental, qualidade pós-colheita, rizobactérias promotoras de crescimento vegetalResumo
Lisianthus (Eustoma grandiflorum) é uma espécie ornamental utilizada como planta em vaso ou flor de corte, cuja popularidade se deve à diversidade de cores, número de botões florais e vida útil. No entanto, durante as primeiras fases de desenvolvimento, problemas como clorose foliar e doenças radiculares afetam a maioria das cultivares, causando baixo crescimento, hastes finas e poucas flores. O uso de rizobactérias promotoras de crescimento de plantas (PGPR) e fungos micorrízicos arbusculares (FMA) melhora o crescimento das plantas, pois esses microrganismos colonizam a raiz do sistema vegetal. Portanto, a fim de proporcionar melhores condições para o desenvolvimento da haste, o objetivo deste trabalho foi avaliar o efeito individual e combinado de Bacillus subtilis (PGPR) e Glomus intraradices (FMA) sobre o crescimento e a qualidade pós-colheita em hastes de lisianthus cv . Mariachi. Utilizando-se o produto comercial Alubión-X (Bacillus subtilis, PGPR) e o fungo micorrízico Glomus intraradices. Os resultados mostraram um efeito significativo da inoculação de G. intraradices no tamanho (66,92 cm) da haste, bem como a combinação de B. subtilis + G. intraradices (65,51 cm) em relação ao controle (36,9 cm). O número médio de botões e flores abertas das hastes tratadas com G. intraradices foram 33,35 e 23,9 respectivamente, significativamente maiores que o controle não tratado. G. intraradices sozinho é a melhor opção para aplicar em lisianthus, quando comparado a aplicação isolada de B. Subtilis.
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