Germinação e armazenamento de sementes de Nidularium innocentii (Lem.)

Pereira, C. C. O.; Cuquel, Francine Lorena; Panobianco, Maristela

doi:10.1590/s0101-31222010000200004

Cited by 13 publications

(11 citation statements)

References 5 publications

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“…Regarding the physiological quality, studies must involve the determination of: the point of collection of fruits and seeds, the most suitable method for its processing, the definition of ideal conditions for germination, and seed storage Cuquel;Panobianco, 2010).…”

Section: Introductionmentioning

confidence: 99%

Maturation and germination of Vernonanthura discolor seeds

et al. 2016

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Vernonanthura discolor is a native species with potential for reclamation of degraded lands, and the manufacture of wood panels. This study has aimed to evaluate the process of maturation and germination of Vernonanthura discolor seeds, determining the harvest time, and conducting the germination test. A periodic monitoring of the reproductive development of sources of Vernonanthura discolor was conducted, located in the municipality of Bocaiúva do Sul, PR, Brazil; and starting from the anthesis, weekly collections of seeds were performed to evaluate the percentage of dry matter, germinating power, and vigor, in order to identify the physiological maturity of the seeds. In the germination test, two combinations of four temperatures (20, 30, 20-30 and 30 °C), and two light regimes were tested, seeking to define the best methodology and evaluation dates of the test. It was concluded that the seeds physiological maturity Vernonanthura discolor reached 45 days after the anthesis, when the maximum values of dry weight, germination and vigor are achieved. Germination test may be conducted on blotting paper at 20 or 25 °C with a supply of light, or at 25 °C in the dark, the first count being on the 13th and the last one on the 29th day after seeding.Index terms: Physiological quality; dry matter; seed harvest. RESUMOVassourão-preto é uma espécie nativa com potencial para a recuperação de áreas degradadas e confecção de painéis de madeira. No trabalho, objetivou-se avaliar o processo de maturação e germinação de sementes de vassourão-preto, definindo o ponto de colheita e a condução do teste de germinação. Realizou-se acompanhamento periódico do desenvolvimento reprodutivo de matrizes de vassourão-preto, localizadas no município de Bocaiúva do Sul, PR, Brasil, sendo que, a partir da antese foram realizadas coletas semanais das sementes, avaliando-se a porcentagem de matéria seca, o poder germinativo e o vigor, a fim de identificar o ponto de maturidade fisiológica das sementes. No teste de germinação, foram testadas combinações de quatro temperaturas (20, 30, 20-30 e 30 °C) e dois regimes de luz, procurando-se definir a melhor metodologia e as datas de avaliação do teste. Conclui-se que a maturidade fisiológica das sementes é atingida, aos 45 dias após a antese, quando os máximos valores de massa seca, poder germinativo e vigor são alcançados; o teste de germinação pode ser conduzido sobre papel mata-borrão, a 20 ou 25 °C com fornecimento de luz, ou a 25 °C no escuro, sendo a primeira contagem aos 13 e a última aos 29 dias após a semeadura.Termos para indexação: Qualidade fisiológica; matéria seca; coleta de sementes.

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Section: Introductionmentioning

confidence: 99%

Maturation and germination of Vernonanthura discolor seeds

et al. 2016

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“…Sowing seeds collected on the optimum point of ripeness resulted in good germination rates, given the fact that the lowest rate observed among the analyzed treatments was less than 66%; in this context, if the seed collection is done correctly, the species show high rates of seed viability, which enhances the production of asexual species. Pereira et al (2010) reported germination percentages of 75% with the species Nidularium innocenti, with temperatures ranging 20-30°C, and Anacleto et al (2008) reported results of germination of Aechmea nudicaulis (L.) Griseb above 80%, which confirms a good index for the species A. gamosepala, since the germination occurred at room without temperature control.…”

Section: Discussionmentioning

confidence: 88%

“…The extractive exploration of bromeliads in Parana occurs more sharply than in other regions due to high life and easy access to the plants in a natural environment, especially in the Atlantic forest. According to Pereira et al (2010) and Pulido et al (2018) there is an urgent need to develop methods for the production of bromeliad seedlings with low environmental impact and low cost, providing extractors and small farmers a viable alternative for propagation and facilitating the practice of these crops on a commercial scale, reducing the extraction pressure.…”

Section: Discussionmentioning

confidence: 99%

Germination and survival of Aechmea gamosepala on different substrates

2019

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The State of Parana is one of the Brazilian regions with the highest incidence of extraction of bromeliads, among the factors for the occurrence of this situation, they highlight a great demand for this species as ornamental flowers and the easy access to forests, few cultivation ponds and difficulties for farmers in cultivation processes, especially in the early stages of cultivation. The species Aechmea gamosepala Wittmack stands out among the species of this group of ornamental plants (Bromeliaceae) with strong commercial appeal and consequently of extraction. Given this context, a study was carried out to evaluate the germination and survival of seeds of the species. Five alternative types of substrates easily accessible to farmers were tested: coconut husk fiber, Plantmax®, earthworm humus, humidified Pinnus husk and sieved agricultural land. The experiment was conducted in a completely randomized design with 4 replications and 25 seeds per experimental unit at room temperature in a greenhouse, with sprinkler irrigation for a period of 90 days. The mean time for the onset of germination was 6.95 days, averaging 74.8% at the peak of germination, but there were no significant statistical differences between the treatments. For the seedling survival, humidified Pinnus husk substrates (70.8%) and coconut fiber house (80.4%) proved to be the best substrates for Aechmea gamosepala Wittmack.

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“…The development of commercial plantings of native species depends on the knowledge of their reproductive process, which includes the formation of seeds, determination of the harvest period, definition of extraction and processing methods, and determination of appropriate conditions for germination and storage (Alves, Sader, Bruno, & Alves, 2005;Pereira, Cuquel, & Panobianco, 2010;Maranho, Paiva, & Paula, 2013).…”

Section: Introductionmentioning

confidence: 99%

Processing and physical and physiological quality of the native forest seeds of <i>Vernonanthura discolor

et al. 2018

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The objective was to study the processing of Vernonanthura discolor seeds, evaluating their physical and physiological qualities and defining parameters for purity analysis and determine the weight of one thousand seeds. The seeds extracted from the infructescences were processed in a blower, testing combinations of openings of the calibration valve and the side air passage. After processing, the seeds went through water content determination, germination tests, first count of the germination test, purity analysis, weight of one thousand seeds and percentage of full seeds. Compared to the control, seeds processed in a regulated blower with the calibrator valve in position 10 plus three 360° turns of side air passage obtained an approximately threefold increase in germination and vigour and had 96% purity. We conclude that the processing of V. discolor seeds was best done by combining the rubbing of the seeds on circular sieves (1.8 and 1.6 mm in diameter) and then passage in an adjusted seed blower (calibration valve in position 10 plus three 360° turns of side air passage). The weight of one thousand seeds is 0.500 g, and the working sample for purity analysis must be 1.3 g.

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Germinação e armazenamento de sementes de Nidularium innocentii (Lem.)

Cited by 13 publications

References 5 publications

Maturation and germination of Vernonanthura discolor seeds

Maturation and germination of Vernonanthura discolor seeds

Germination and survival of Aechmea gamosepala on different substrates

Processing and physical and physiological quality of the native forest seeds of <i>Vernonanthura discolor

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