Multiplicação in vitro e aclimatização de Melocactus sergipensis

Filho, Eronides Soares Bravo; Santana, Marlucia Cruz de; Santos, Paulo Augusto Almeida; Ribeiro, A. S.

doi:10.30550/j.lil/2018.55.1/3

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…Indeed, for the combination of auxin and cytokine to be effective, there must be a balance between them, ie doses that are sufficient to induce the rooting process without causing toxicity to the explant, which would lead to callus formation. The combined use of auxin and cytokine was also favorable to root development in other species, such as M. sergipenses (coroa-de-frade) (Bravo Filho et al, 2018). However, the results are not always the same or similar, since the response depends on several other factors, such as explant type and age and nutritional condition of the donor plant.…”

Section: Resultsmentioning

confidence: 96%

Growth regulators and their reflection on different hop genotypes cultivated under in vitro conditions

et al. 2022

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Hops is a new culture in Brazil. Tissue culture can be an important technique for rapid hop propagation. This paper aims to characterize responses from different genotypes under different growth regulators through the interrelationship of response variables important to hop in vitro growth. Three genotypes were cultivated in six culture media with different combinations of growth regulators, BAP (6-benzylaminopurine), IAA (3-indolacetic acid) and GA3 (gibberellic acid). The means were compared by orthogonal contrasts and the interrelationship of the response variables was performed by path analysis. American genotypes showed favorable root development under the BAP + IAA combination, while the use of IAA improved shoot development. The origin of genotypes was important for defining the best protocol for in vitro cultivation. The path coefficient showed that the variable number of shoots has stronger direct effect on the number of nodal segments. Additionally, in tissue culture assays, the use of a covariable and proper error distribution significantly increased experimental accuracy.

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Section: Resultsmentioning

confidence: 96%

Growth regulators and their reflection on different hop genotypes cultivated under in vitro conditions

et al. 2022

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“…Five Melocactus species are found in the Brazilian state of Sergipe, where they occur in the coastal Restinga ecosystem and the semi-arid Caatinga biome. Melocactus sergipensis Taylor & Meiado, is the state's only endemic cactus, and is the only cactus species classified as Critically Endangered in the IUCN Red List (Taylor et al 2014, Zappi et al 2016, Bravo Filho et al 2018, based on criteria B1, B2, and C2 (IUCN 2001). In , Bravo Filho et al (2015 recorded a population of approximately 100 adult M. sergipensis growing on outcrops of granite and metamorphic rock within a small patch of Caatinga vegetation of approximately 1000 m 2 (Taylor et al 2014, Herbário Alexandre Leal Costa 2016.…”

Section: Introductionmentioning

confidence: 99%

Germinação e aclimatização de Melocactus sergipensis Taylor & Meiado

Filho¹,

Santana

Santos

et al. 2019

Iheringia Ser Bot

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Melocactus sergipensis is endemic to the state of Sergipe in northeastern Brazil, with an estimated population of 100 adult individuals. The present study evaluated the effect of imbibition on the in vitro and ex vitro germination of M. sergipensis seeds, and the influence of different substrates on acclimatization. The experimental design was completely randomized, and the data were evaluated using an Analysis of Variance with Tukey's test, considering a 5% significance level. Soaking the seeds for 6 h in 2 mg L-1 GA 3 increased in vitro germination significantly, from 10% to 38%, although no significant variation was found in germination rates among the different substrates. Acclimatization occurred in all substrates, with a survival rate of over 88%.

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

Campos,

Mendonça,

Nascimento

et al. 2024

Biosci. J.

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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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Multiplicação in vitro e aclimatização de Melocactus sergipensis

Cited by 3 publications

References 11 publications

Growth regulators and their reflection on different hop genotypes cultivated under in vitro conditions

Growth regulators and their reflection on different hop genotypes cultivated under in vitro conditions

Germinação e aclimatização de Melocactus sergipensis Taylor & Meiado

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

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