Propagação rápida da planta ornamental Homalomena gigantea usando estacas de rizoma
DOI:
https://doi.org/10.1590/2447-536X.v30.e242711Palavras-chave:
Homalomena gigantea, rizoma apical, rizoma distal, rizoma médioResumo
Este estudo investiga os fatores críticos que influenciam a regeneração de brotos e raízes a partir de cortes de rizoma de H. gigantea, fornecen- do insights valiosos para as práticas de corte de rizoma. Três experimentos foram conduzidos para avaliar o impacto das concentrações de reguladores vegetais, comprimento do corte e seção de corte na regeneração. No primeiro experimento, diferentes concentrações de α-NAA e BAP foram examina- das, revelando que a seleção e concentração de reguladores vegetais desempenham um papel crucial na indução de brotos e raízes e no desenvolvimento de plântulas. As taxas de sucesso mais altas foram observadas a partir de 150 ppm de α-NAA e 100 ppm de BAP, embora houvesse um equilíbrio entre a quantidade e a qualidade das plântulas, enfatizando a necessidade de uma seleção equilibrada de reguladores vegetais. O segundo experimento inves- tigou a influência do comprimento de corte do rizoma. Cortes mais longos, especialmente com cinco e sete cm, levaram a um melhor desenvolvimento de brotos e raízes, destacando a importância da seleção de comprimentos de corte apropriados. No terceiro experimento, seções de corte (apical, média e distal) sem concentrações de reguladores vegetais foram avaliadas, com todas as seções mostrando altas taxas de regeneração. No entanto, a seção apical produziu plântulas de melhor qualidade com parâmetros de crescimento superiores, seguida pela seção média, enquanto a seção distal apresentou menor eficácia. Em resumo, essas descobertas destacam a importância da escolha e concentração de reguladores vegetais, comprimento de corte e seção de corte para a regeneração bem-sucedida de H. gigantea a partir de cortes de rizoma. Esses insights fornecem orientações valiosas para aprimorar os métodos de corte de rizoma para essa espécie de planta e promover uma propagação eficiente.
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Copyright (c) 2024 Thanh Pham, Trung Le Nguyen Thoi, Nhung Dang Thi, Minh Nguyen Hoang Nhat, Thao Nguyen Huynh Yen, Anh Bui Thi Tuyet, Nhi Vuong Thi Yen, Trang Nguyen Thi Quynh
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