ARMAZENAMENTO DE SEMENTES DE IPÊ-AMARELO-DO-BREJO (&lt;i&gt;Handroanthus umbellatus&lt;/i&gt; (Sond.) Mattos. Bignoniaceae)

Martins, Cibele Chalita; Pinto, Monalisa Alves Diniz da Silva Camargo

doi:10.5902/1980509815725

Cited by 11 publications

(6 citation statements)

References 3 publications

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“…The initial moisture content, 9%, was increased to 10.2% at the end of storage time (Benedito et al, 2011). On the other hand, Handroanthus umbellatus seeds with an initial moisture content and germination percentage of 6% and 93%, respectively, had their moisture content increased to 12.4% and germination reduced to 25% after three months of storage at 17-30 °C and 60-98% RH (Martins and Pinto, 2014). Ataide et al (2016) verified that Dalbergia nigra seeds stored at 20 °C and 55% RH maintained their physiological quality, whereas those at 95% RH deteriorated in four months.…”

Section: Discussionmentioning

confidence: 96%

PHYSIOLOGICAL AND BIOCHEMICAL CHANGES IN BRAZILIAN PEPPER (Schinus terebinthifolius Raddi) SEEDS DURING STORAGE

et al. 2018

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Seed propagation is the standard method of propagation of Brazilian peppertree (Schinus terebinthifolius Raddi); therefore, the study of appropriate conditions of seed storage is of great importance. The aim of this study was to quantify the physiological and biochemical changes that occur in Brazilian pepper seeds under different storage conditions. Seeds were stored at 34, 55, 75, and 93% relative humidity (RH) at 20°C. Samples were collected before storage and every two months for the analysis of moisture content, germination percentage, germination rate, lipid peroxidation, membrane permeability, and activity of enzymes of the antioxidant system. Brazilian pepper seeds remained viable for 12 months when kept at 34 or 55% RH. At 75% RH, seeds lost viability in six months, whereas at 93% RH, seeds deteriorated within two months. Electrical conductivity and lipid peroxidation decreased after eight months of storage under all RH conditions. No relation was observed between loss of physiological quality and lipid peroxidation or membrane permeability. The activity of the enzymes superoxide dismutase, catalase, and ascorbate peroxidase did not vary during storage, regardless of RH.

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Section: Discussionmentioning

confidence: 96%

PHYSIOLOGICAL AND BIOCHEMICAL CHANGES IN BRAZILIAN PEPPER (Schinus terebinthifolius Raddi) SEEDS DURING STORAGE

et al. 2018

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“…SURIYONG et al, 2015). A umidade relativa do ar interfere diretamente no teor de água das sementes, quando elevada reduz a longevidade das sementes, pois pode induzir a uma elevada taxa respiratória e consumo de reservas energéticas, sendo esta uma das principais características a serem observadas (MARTINS; CAMARGO, 2014;WANG et al, 2018).…”

Section: Resultsunclassified

Germinação e vigor de sementes de Mimosa tenuiflora após o armazenamento

Silva

Silva²,

Moura³

et al. 2022

Rev. Agro. Amb.

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A Caatinga é um bioma exclusivo do Brasil em que cerca de 80% da sua área já foi modificada. Dessa forma há a necessidade de cada vez mais estudar as espécies vegetais que tenham potencial para a regeneração dessas áreas degradadas. Objetivou-se acompanhar o desempenho fisiológico de sementes de Mimosa tenuiflora, submetidas a tratamentos de superação de dormência após diferentes períodos e condições de armazenamento. Empregou-se o delineamento experimental inteiramente casualizado, com quatro tratamentos pré-germinativos de superação de dormência (testemunha, imersão em ácido sulfúrico por 10 e 13 min. e imersão em soda cáustica 20% por 30 min.), após quatro períodos de armazenamento (0; 50; 100; e 150 dias) em ambiente com e sem refrigeração, adotando-se um esquema fatorial 4 x 4 x 2. Determinou-se antes e após cada período de armazenamento as seguintes avaliações: teor de água, porcentagem, índice de velocidade e tempo médio de germinação, porcentagem, índice de velocidade e tempo médio de emergência, comprimento da parte aérea e do sistema radicular e condutividade elétrica das sementes. A utilização do ácido sulfúrico foi eficiente na superação da dormência das sementes de M. tenuiflora, mantendo os valores máximos ao longo dos períodos de armazenamento. A utilização da soda cáustica por 30 min. só é recomendada no início do armazenamento, sendo que a partir de 50 dias há redução do potencial fisiológico das sementes.

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“…Irregular production of seeds of most native forest species, associated with the difficulties found in storing them, challenges seed conservation and seedling production activities (Souza et al, 2011). The seed is the main propagation pathway of most native tree species, and its longevity often is low (Martins & Pinto, 2014), making it difficult to propagate these species.…”

Section: Introductionmentioning

confidence: 99%

Storage of Simarouba amara Aubl. seeds

et al. 2021

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Prior knowledge about the physiological behavior of seeds under storage conditions allows the use of appropriate techniques to maintain viability. The goal of the present study was to classify the behavior of Simarouba amara seeds regarding their physiological potential during storage. The seeds were obtained from mature fruits, collected from five parent plants located at the Joanes-Ipitanga Environmental Protection Area (EPA) (Simões Filho, Bahia) in January 2018. Two experiments were carried out in a completely randomized design. In the first one, seed desiccation tolerance was evaluated with seven moisture contents: 5%, 7.5%, 10%, 12.5%, 15%, 25% and 35.6% (initial moisture). A germination test was carried out to evaluate the seeds’ vigor. In the second experiment, the seeds were stored with moisture contents of 7.5%, 12.5% and 35.6% at temperatures of 8 °C, 15 °C and 20 °C) for two storage periods, two and four months, and samples were taken to determine moisture content and conduct the germination test. Germination tests were performed in BOD chambers at 30 °C and with 12-hour light photoperiod. Daily counts were performed for the number of germinated seeds. We measured germination percentage, mean germination time, uncertainty index, percentage of normal seedlings, and percentage of unviable seeds. Simarouba amara seeds tolerate desiccation up to 7.5% moisture content, but lost viability when stored under this condition. At four months of storage all seeds lost viability. Simarouba amara seeds are recalcitrant and lose viability before reaching two months of storage.

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ARMAZENAMENTO DE SEMENTES DE IPÊ-AMARELO-DO-BREJO (<i>Handroanthus umbellatus</i> (Sond.) Mattos. Bignoniaceae)

Cited by 11 publications

References 3 publications

PHYSIOLOGICAL AND BIOCHEMICAL CHANGES IN BRAZILIAN PEPPER (Schinus terebinthifolius Raddi) SEEDS DURING STORAGE

PHYSIOLOGICAL AND BIOCHEMICAL CHANGES IN BRAZILIAN PEPPER (Schinus terebinthifolius Raddi) SEEDS DURING STORAGE

Germinação e vigor de sementes de Mimosa tenuiflora após o armazenamento

Storage of Simarouba amara Aubl. seeds

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