Teste de envelhecimento acelerado em sementes de crambe (Crambe abyssinica Hochst), cultivar FMS Brilhante

Amaro, Hugo Tiago Ribeiro; David, Andréia Márcia Santos de Souza; Neta, Izabel Costa Silva; Assis, Miquéias de Oliveira; Araújo, Eduardo Fontes; Araújo, Roberto Fontes

doi:10.1590/s0034-737x2014000200007

Cited by 12 publications

(10 citation statements)

References 10 publications

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“…In addition, seeds in this treatment showed delayed germination, with a lower germination speed index. Amaro et al (2014) analysed five lots of crambe seeds and obtained an average germination of 42%, indicating that crambe seeds have a low germination percentage, which was also observed in this study. This relates to the fact that crambe seeds are characterised by post-harvest dormancy, resulting in a low germination percentage when compared to other agricultural seeds (Costa et al, 2012;Oliveira et al, 2014).…”

Section: Resultssupporting

confidence: 81%

Foliar application of plant growth regulators changes the physiological quality of crambe seeds

Boiago

Coelho

Fernandes

et al. 2019

Acta Sci. Biol. Sci.

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The application of plant growth regulators can manipulate the development of cultivated plants, and their physiological effects may be reflected in the physiological quality of the seeds. This study evaluated the effects of plant growth regulators (PGR) on the physiological quality of crambe seeds produced in the 2014 and 2015 harvests. During crop development, we applied two foliar sprayings of the following treatments: 1) control treatment with distilled water; 2) indole-3-acetic acid 100 mg L-1 (IAA); 3) 3-gibberellic acid P.A. 100 mg L-1 (GA3); 4) commercial PGR Stimulate® 6 mL L-1. The seeds were harvested and evaluated for water content, germination percentage and germination speed index (GSI), electrical conductivity and concentrations of leached Ca, Mg and K ions. Means were compared by Tukey´s and Dunnett tests (p<0.05). Applying Stimulate® increased the germination percentage and the germination speed index, while IAA application showed an opposite effect, increasing the electrical conductivity of crambe seeds. Calcium leaching decreased with IAA application, and all regulators reduced K leaching. We therefore infer that the application of plant growth regulators influences the physiological quality of crambe seeds.

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Section: Resultssupporting

confidence: 81%

Foliar application of plant growth regulators changes the physiological quality of crambe seeds

Boiago

Coelho

Fernandes

et al. 2019

Acta Sci. Biol. Sci.

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“…Our results verified that the exposure of the seeds of passion fruit to aging at 43ºC for 72 h did not influence the germination of the unripe seeds but there was a significant difference between the unaged and aged seeds of the sweet passion fruit, collected at medium altitudes. Previous studies showed that aging at 43 °C in the 48, 72, and 96 h periods promoted an increase in the percentage of germination in the seeds of Crambe (Amaro et al, 2014). A significant difference in vigor was also observed between the unaged and aged seeds in our study (Table 3).…”

Section: Physiological Quality Of the Seeds Of Passion Fruitsupporting

confidence: 81%

The physiological quality of the seeds of passion fruit (Passiflora spp.) grown at different altitudes

Maciel¹,

Lima²,

Madalon³

et al. 2018

Aust J Crop Sci

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Altitudes, ranging between 100 m and 900 m are the most suitable for growing passion fruit and the studies on the distinct geographical locations suggest the expression of different genotypes under the influence of adequate environmental conditions. The objective of this study was to evaluate the physiological quality of the seeds of Passiflora spp., cultivated at three different altitudes in the state of Espírito Santo, Brazil. Before conducting the physiological tests for seed quality, pre-tests were performed on the physically scarified, gibberellic acid-treated, and intact seeds of the yellow passion fruit (Passiflora edulis Sims f. flavicarpa Degener), the purple passion fruit (Passiflora edulis Sims), and the sweet passion fruit (Passiflora alata Curtis), collected from three different altitudes (high, medium, and low), in order to overcome dormancy. The higher values of germination and vigor were observed after the pre-germination treatments of the intact seeds of the yellow passion fruit, the scarified seeds of the purple passion fruit, and the gibberellic acid-treated seeds of the sweet passion fruit. The seeds with the highest values of germination and vigor were selected for the accelerated aging test with a saturated salt solution at 43 ºC for 72 h and the controlled deterioration test with 25% of moisture at 45 ºC for 24 h, respectively. Using these tests, it was possible to differentiate the species of passion fruit, collected from different altitudes. The seeds of the yellow passion fruit and the seeds, collected from higher altitudes presented higher physiological quality in this study.

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“…This suggests that this test has sensibility limitations for separating seed lots by their physiological potential (Amaro et al, 2014). Thus, Marcos-Filho (2015b) also reinforces the importance of using more than one test to estimate seed vigor, due to the variation of efficiency of the available procedures.…”

Section: Resultsmentioning

confidence: 88%

Methodological adjustment of the accelerated aging test to evaluate the vigor of chia seeds

et al. 2018

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-Chia cultivation is expanding in Brazil, but there is still no standardized test to evaluate the quality of the seeds. Therefore, vigor tests that expose seeds to stress conditions must be standardized. This study aimed to establish the methodology for the accelerated aging test in chia seeds. Six chia seed lots with similar germination behavior were used. They were submitted to germination, first germination count, seedling emergence, emergence speed index and accelerated aging tests. Aging periods of 24, 48, and 72 hours were used in the conventional methodology, and also with the use of unsaturated and saturated sodium chloride (NaCl) solutions. The results obtained from the accelerated aging tests revealed tendencies for lot separation similar to the classification of chia seed lots in relation to the physiological potential obtained in the preliminary quality tests. The accelerated aging test can be used to evaluate the physiological potential of chia seeds by using water or unsaturated saline solution. In the conventional test (water), the seeds should be exposed for 24 hours. When using unsaturated saline solution, the exposure time must be of 48 hours.

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Teste de envelhecimento acelerado em sementes de crambe (Crambe abyssinica Hochst), cultivar FMS Brilhante

Cited by 12 publications

References 10 publications

Foliar application of plant growth regulators changes the physiological quality of crambe seeds

Foliar application of plant growth regulators changes the physiological quality of crambe seeds

The physiological quality of the seeds of passion fruit (Passiflora spp.) grown at different altitudes

Methodological adjustment of the accelerated aging test to evaluate the vigor of chia seeds

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