TEMPERATURE, LIGHT, AND DESICCATION TOLERANCE IN SEED GERMINATION OF Mauritia flexuosa L.F.

Almeida, Lívia Caroline Praseres de; Pivetta, Káthia Fernandes Lopes; Gimenes, Rossano; Romani, Gustavo de Nóbrega; Ferraz, Marcos Vieira; Mazzini-Guedes, Renata Bachin

doi:10.1590/1806-90882018000300005

Cited by 6 publications

(7 citation statements)

References 20 publications

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“…(Porto et al, 2018), Euterpe precatoria Mart. (Costa et al, 2018) and Mauritia flexuosa L. f. (Almeida et al, 2018). In many species, the presence of light favors the germination of the seeds, while in others, the germinative behavior of the seeds is favored in the absence than in the presence of light (Melo et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

“…ex Chabaud, 20-30 ºC (Pimenta et al, 2010); Copernicia alba Morong ex Morong & Britton, 20-30 ºC (Masetto et al, 2012); Bactris maraja Mart., 26-40 ºC (Rodrigues et al, 2014); Livistona rotundifolia (Lam.) Mart., 25-35 ºC (Viana et al, 2016) and Mauritia flexuosa L. f., 20-30 ºC (Almeida et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

“…In the presence of light, the lamps were turned ond and off automatically for a photoperiod of 8 hours of light being in accordance with what was proposed by Luz et al (2014). The substrate medium-sized expanded vermiculite (Batista et al, 2016;Costa et al, 2018;Almeida et al, 2018), maintained at 100% of its water-holding capacity. The substrate was slowly saturated with water, until the interruption of its drainage was observed to determine the of water retention.…”

Section: Methodsmentioning

confidence: 99%

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Temperatures and light regimes in the germination of Areca vestiaria and Areca triandra seeds

et al. 2022

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Temperatures and light regimes in the germinationof Areca vestiaria and Areca triandra seeds 1Propagation of palm trees is mainly by seeds and, in general, germination is uneven and slow, caused by several factors, such as temperature and light. We aimed to evaluate the effect of different temperature conditions and light regimes in the germination of Areca vestiaria and Areca triandra seeds. Two experiments were carried. The experimental design was completely randomized with a 5 × 2 factorial (temperature × light), with four replicates per treatment for the species A. vestiaria and five replications for A. triandra, with 25 e 20 seeds, respectively. The temperatures tested were 25, 30, 35, 20-30 and 25-35 ºC and the light regimes were presence and absence of light. The germination percentage and germination speed index were evaluated. Analysis of variance was performed using the F Test, with subsequent comparison of the means using the Tukey test (α = 0.05). For both species, there were significant differences between the temperature conditions for the studied characteristics. It was concluded that temperatures of 25 ºC, 30 ºC, 25-35 ºC and 20-30 ºC are indicated for germination of seeds of the species Areca vestiaria and, 25-35 ºC for Areca triandra, being the seeds classified as neutral photoblastics.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Temperatures and light regimes in the germination of Areca vestiaria and Areca triandra seeds

et al. 2022

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“…Thus, alternating temperatures (20-30 and 20-35 °C) were selected as most adequate for germination of M. alternifolia, since in a general context, they combined greater percentage and greater speed of germination (Figures 2 and 3). Seeds of Mauritia fl exuosa also germinated better under alternating temperatures, and their eff ects may be related to enzymatic mechanisms capable of being activated at diff erent temperatures (Almeida et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

GERMINATION AND POST-SEMINAL DEVELOPMENT OF Melaleuca alternifolia (MAIDEN & BETCHE) CHEEL

et al. 2020

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There is little information regarding the germination pattern, seed characterization, and seedling development of Melaleuca alternifolia. This study aimed to determine the ideal temperature for the germination of M. alternifolia seeds, as well as to characterize the seeds and the post-seminal development of the species. Three lots of M. alternifolia seeds were placed to germinate at 20, 25, 20-30, 20-35, 30, and 35 °C, with daily evaluations to determine germination rate, germination speed index (GSI), speed of germination (SG), and mean time for germination of 50% (t50) and 100% (t100) of seeds. The inner morphology of the seeds was evaluated through X-ray images and seedling morphology by photographs. Alternating temperatures (20-30 and 20-35 °C) led to germination rates higher than the other temperatures. The GSI had the lowest values at the constant temperature of 20 °C and the highest values at the constant 30 °C for all the lots. The SG was lowest at a temperature of 20 °C and the highest at the temperature of 35 °C. At alternating temperatures (20-30 and 20-35 °C), t50 was around 5 days and t100 reached 16 days. In conclusion, the alternating temperatures of 20-30 °C and 20-35 °C are recommended for germination of M. alternifolia, and final evaluation can be performed at 16 days after sowing. The inner structures of seeds could be visualized by X-ray analysis, and full seeds could be distinguished from empty seeds and impurities. Seeds exhibit epigeal germination and seedling development is stabilized after 30 days.

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“…A espécie tem sido utilizada para diversos fins, desde seu uso cultural regional com a utilização das folhas para cobertura de casas e os frutos como alimento, bem como em aplicações farmacêuticas, industriais e biotecnológicas devido à sua composição química e farmacológica (BATISTA et al, 2012;ORLANDA, 2017). A implantação de cultivos comerciais de M. flexuosa, bem como a conservação de populações naturais, é uma das tentativas de manutenção da espécie, no entanto é dificultada por sua baixa taxa de germinação, rápida perda de viabilidade das sementes (SILVA et al, 2014) e sensibilidade à dessecação (ALMEIDA et al, 2018).…”

Section: Introductionunclassified

Aspectos biométricos dos frutos e diásporos de <i>Mauritia flexuosa</i> provenientes do Cerrado brasileiro

Campos¹,

Souza²,

Vieira³

et al. 2023

Ciênc. Florest.

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A palmeira buriti (Mauritia flexuosa L. f.) serve como matéria-prima para a indústria alimentícia, farmacêutica e biotecnológica, porém apresenta baixa taxa de germinação e viabilidade de sementes, que estão diretamente relacionadas com as características morfológicas dos frutos e sementes. A caracterização biométrica fornece informações necessárias para a diferenciação, caracterização de aspectos ecológicos e genéticos de diferentes espécies e de populações de um mesmo grupo, podendo auxiliar na conservação e propagação de espécies. Dessa forma, o presente trabalho realizou a caracterização biométrica de frutos e diásporos de Mauritia flexuosa provenientes de um ambiente de cultivo no Cerrado brasileiro. Foram amostrados aleatoriamente 100 frutos, que foram mensurados em comprimento, largura, espessura, peso individual, comprimento do diásporo, largura do diásporo, espessura do diásporo e peso individual do diásporo. Os frutos foram classificados como vermelhos (Hue 10 R 4/8) e os diásporos amarelo-alaranjados (Hue 7.5 YR 8/8). Os dados de cada característica foram submetidos à análise estatística descritiva. Os frutos apresentaram variação de 6,56% de comprimento, 4,38% de largura e 4,26% de espessura, enquanto os diásporos apresentaram variação de 8,17% de comprimento, 9,29% de largura e 9,62% de espessura. As variáveis peso do fruto e peso do diásporo apresentaram maiores variações, 12,12% e 23,86%, respectivamente. Houve correlação positiva entre a largura e espessura (0,90). A pequena variação nas dimensões biométricas indica que a espécie possui pouca variabilidade.

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TEMPERATURE, LIGHT, AND DESICCATION TOLERANCE IN SEED GERMINATION OF Mauritia flexuosa L.F.

Cited by 6 publications

References 20 publications

Temperatures and light regimes in the germination of Areca vestiaria and Areca triandra seeds

Temperatures and light regimes in the germination of Areca vestiaria and Areca triandra seeds

GERMINATION AND POST-SEMINAL DEVELOPMENT OF Melaleuca alternifolia (MAIDEN & BETCHE) CHEEL

Aspectos biométricos dos frutos e diásporos de <i>Mauritia flexuosa</i> provenientes do Cerrado brasileiro

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