In vitro photoautotrophic cultivation of Melocactus zehntneri: insights from allometric characteristics from germination to acclimatization

Joedna Alves Campos; Ane Marcela das Chagas Mendonça; Augusto Vinícius de Souza Nascimento; Geovane da Silva Dias; Luciano Coutinho Silva; Marlucia Cruz de Santana; Carlos Dias da Silva Júnior; Paulo Augusto

doi:10.14393/BJ-v40n0a2024-61107

Autores

Joedna Alves Campos Universidade do Minho
Ane Marcela das Chagas Mendonça Universidade Federal de Sergipe https://orcid.org/0000-0003-1157-0044
Augusto Vinícius de Souza Nascimento Universidade Federal de Sergipe https://orcid.org/0000-0002-7905-2641
Geovane da Silva Dias Universidade Federal de Lavras
Luciano Coutinho Silva Universidade Federal da Paraíba
Marlucia Cruz de Santana Universidade Federal de Sergipe https://orcid.org/0000-0001-7934-0582
Carlos Dias da Silva Júnior Universidade Federal de Sergipe https://orcid.org/0000-0001-6619-2509
Paulo Augusto Universidade Federal de Sergipe https://orcid.org/0000-0002-0790-7663

DOI:

https://doi.org/10.14393/BJ-v40n0a2024-61107

Palavras-chave:

Cactus, Light quality, Tissue culture

Resumo

Melocactus zehntneri is a species of ornamental relevance suffering anthropogenic pressures, putting its preservation at risk. Thus, alternatives for propagating and conserving this species are needed. This study evaluated the effect of photoautotrophic cultivation of M. zehntneri to produce plants well acclimated to natural conditions. The seeds underwent different imbibition times before in vitro germination. Besides the growth room, a greenhouse hosted the photoautotrophic cultivation of seedlings. Vermiculite replaced agar in the culture medium. The imbibition pre-treatment in distilled water and the growth environments affected some parameters linked to germination. The greenhouse provided better characteristics for plants grown in vitro and for acclimatization than those kept in the growth room. Plants cultivated and acclimated ex vitro in a greenhouse photoautotrophic environment showed improved characteristics regarding ornamental significance.

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