Modulação da senescência em Alstroemeria: efeitos da luz LED e de soluções conservantes sobre o desempenho pós-colheita
DOI:
https://doi.org/10.1590/2447-536X.v32.e323089Palavras-chave:
Alstroemeria spp., iluminação LED eficiente, floricultura sustentável, longevidade, senescência floraLResumo
A curta longevidade pós-colheita inerente às hastes florais de Alstroemeria spp. representa um desafio significativo para o setor da floricultura, particularmente devido ao rápido amarelecimento foliar, à abscisão das tépalas e à consequente perda da qualidade visual. Este estudo teve como objetivo avaliar os efeitos de diferentes espectros de luz LED e soluções conservantes sobre o desempenho pós-colheita de hastes florais de Alstroemeria cv. Pompeii. O experimento foi conduzido em delineamento fatorial composto por cinco espectros de luz (vermelho, azul, branco, 2 vermelho:1 azul e 2 azul:1 vermelho) combinados com nove soluções conservantes, incluindo tratamentos de pulsing com tiossulfato de prata ou giberelina associados a soluções de manutenção contendo giberelina, melatonina ou benziladenina, além de um controle com água destilada. Os parâmetros avaliados incluíram longevidade de vaso, relações hídricas, teor de clorofila e coloração das pétalas. Os resultados demonstraram que o pulsing com tiossulfato de prata combinado com giberelina foi o tratamento mais eficaz para a preservação da qualidade pós-colheita, promovendo aumento significativo da longevidade de vaso e retardando a senescência. O pulsing com giberelina também apresentou desempenho satisfatório ao prolongar a longevidade de vaso e retardar o amarelecimento foliar, representando, portanto, uma alternativa viável e não tóxica. Além disso, a exposição à luz LED vermelho melhorou o balanço hídrico, manteve a estabilidade da coloração das pétalas e reduziu a degradação da clorofila.
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Copyright (c) 2025 Mariza Moraes Ponce, Michelly Maira Fernandes, Hemelyn Soares Magalhães, Patrícia Duarte de Oliveira Paiva
Este trabalho está licenciado sob uma licença Creative Commons Attribution 4.0 International License.
