pH of exudate test in the physiological quality of crambe seeds

Alves, Charline Zaratin; Rodrigues, Lennis Afraire; Rego, Carlos Henrique Queiroz; Silva, Josué Bispo da

doi:10.1590/0103-8478cr20141838

Cited by 8 publications

(7 citation statements)

References 9 publications

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“…An Acad Bras Cienc (2019) 91( 4) e20180734 8 | 10 submitted to a soaking period of 30 minutes at 25°C. In the same way that exudate -phenolphthalein pH test showed a significant correlation with the emergence of crambe seedlings, 'FMS Brilhante', in the combinations of 30 minutes at 25°C and 45 minutes at 30°C and with germination in all soaking periods tested (15, 30 and 45 minutes) at 30°C (Alves et al 2016).…”

Section: Cdm -mentioning

confidence: 54%

“…The exudate -phenolphthalein pH test was efficient at 25°C for 30 minutes in the evaluation of the physiological quality of soybean seeds (G. max L.) Amaral 1986, Barros andMarcos Filho 1990). As well as, for the crambe (Crambe abyssinica Hochst) seeds, cultivar 'FMS Brilhante', in which the test was promising in the distinction of the plots at vigor levels at both the constant temperature of 25°C for 30 minutes and at 30°C for 45 minutes (Alves et al 2016).…”

Section: Resultsmentioning

confidence: 99%

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Exudate - phenolphthalein pH test for evaluation of validity in seeds of Libidibia ferrea

Souto

Gonçalves

Viana

et al. 2019

An. Acad. Bras. Ciênc.

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Seed companies are looking for promising, quick and effective alternatives to determine the physiological quality of seeds. The objective of the current work was to study the efficiency of the exudate -phenolphthalein pH test to evaluate the seeds of two lots of Libidibia ferrea (Mart. ex Tul.) L. P. Queiroz var. ferrea. The statistical design for the the exudate -phenolphthalein pH test was completely randomized with four replicates of 50 seeds in a factorial design (2 x 5), two seed lots and five soaking periods (30, 60, 90, 120, and 150 minutes), respectively, using two constant temperatures (25 and 30°C). The percentage of viability and germination of the seeds did not differ in the temperatures of 25 and 30°C and in the soaking periods by the exudate -phenolphthalein pH test. Thus, it is recommended that the test be conducted for at least 30 minutes in distilled and deionized water at the constant temperature of 25 or 30°C to evaluate the vigor of the Libidibia ferrea.

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Section: Cdm -mentioning

confidence: 54%

Section: Resultsmentioning

confidence: 99%

Exudate - phenolphthalein pH test for evaluation of validity in seeds of Libidibia ferrea

Souto

Gonçalves

Viana

et al. 2019

An. Acad. Bras. Ciênc.

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“…However, Amaral and Peske (2000), Cabrera and Peske (2002), and Alves et al (2016) found positive correlation between the pH exudate and germination/emergence tests for wheat, corn and cramble seeds. In this way, this test is not recommended at these conditions to analyze the viability and vigor of C. limonia seeds, requiring more research about this specie to adjust the best concentration (indicator solution) and immersion periods of the seeds.…”

Section: Resultsmentioning

confidence: 97%

“…Through the data obtained by pH-measuring devices or acid-base indicator solutions, it is possible to evaluate the physiological condition of each seed and, consequently, the physiological potential of lots (Araldi and Coelho, 2015;Alves et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

pH exudate test as a method to estimate viability and vigor of Citrus limonia Osbeck seeds

et al. 2018

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-The pH exudate is a quick test used to check the seed membranes integrity; however, its performance is limited due to the singularity of each specie requiring adjustments about its methodology. In this sense, the aim of this study was to perform a quick and accurate physiological potential estimation of Citrus limonia Osb. ('Rangpur Lime') seeds through pH exudate test. First, there was carried out the characterization of five seedlots of 'Rangpur Lime' by determination of the thousand seed mass, water content, germination and emergence. Then, a complete randomized experimental design was installed in a factorial scheme: 5 × 3 × 2 (five seedlots, three indicator solutions, and two immersion periods), to evaluate the pH exudate. The seeds were individually distributed in polypropylene trays, and after the immersion periods, there were taken pictures and analyzed by a numeric scale. Despite the similarity, the emergence test showed to be more efficient for 'Rangpur Lime' seeds comparing to the germination test, because it promoted higher percentage of seedlings. Regarding the pH exudate test, there were not observed differences between the seedlots for both analysis, visual and image, not being efficient to discriminate lots of 'Rangpur Lime'.Index terms: 'Rangpur Lime', propagation, quick tests, seed quality.Teste do pH do exsudato como método para estimar a viabilidade e o vigor de sementes de Citrus limonia Osbeck RESUMO -O pH do exsudato é um teste rápido utilizado para verificar a integridade das membranas de sementes, porém seu desempenho é limitado devido à singularidade de cada espécie necessitando de ajustes sobre sua metodologia. O objetivo deste estudo foi realizar uma estimativa rápida e precisa do potencial fisiológico de sementes de Citrus limonia Osb. ('Limão Cravo') pelo teste pH do exsudato. Inicialmente, realizou-se a caracterização de cinco lotes de sementes de 'Limão Cravo' pela determinação da massa de mil sementes, teor de água, germinação e emergência. Posteriormente, foi instalado um delineamento inteiramente casualizado em esquema fatorial: 5 × 3 × 2 (cinco lotes de sementes, três concentrações de solução indicadora e dois períodos de imersão), para avaliar o pH do exudato. As sementes foram distribuídas individualmente em bandejas de polipropileno e, após os períodos de imersão, foram fotografadas e analisadas por meio de escala numérica. Apesar da similaridade, o teste de emergência mostrou ser mais eficiente para sementes de 'Limão Cravo' comparado ao teste de germinação, pois promoveu maior percentual de plântulas. Em relação ao teste pH do exsudato, não foi possível observar diferenças entre lotes de semente para ambas análises, visual e de imagem, não sendo um teste eficiente para discriminar lotes de 'Limão Cravo'.Termos para indexação: 'Limão Cravo', propagação, testes rápidos, qualidade de semente.1

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“…There is a reduction in total carbohydrates, sugars, soluble and phosphate proteins, an increase in free fatty acids, destabilization of enzyme activity, and synthesis of proteins. Increase in electrical conductivity due to a decrease in the grain water content is related to the process of reorganization of cell membranes as a function of grains rehydration (Barbosa et al, 2012;Alves et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Experimental silo-dryer-aerator for the storage of soybean grains

Coradi

Lemes

2018

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThis study aimed to verify the capacity of silo-dryer-aerator prototype equipment operating as a silo-storage-aerator for soybean quality analysis. Soybeans with water content of 17% (wet basis -w.b.) were dried and stored in a silo-dryer-aerator system that was designed using a drying chamber, four independent storage cells, and a static capacity of 164 kg. Another batch of grains was stored in a silo-storage-aerator with a capacity of 1,200 kg. The experiment was set up in a completely randomized factorial 5 × 4 experimental design including five grain batches stored after being dried at 30, 40, and 50 °C (mixed grains were dried at three temperatures) in the silo-dryer-aerator cells and one mixed grain batch stored in the silo-storage-aerator system under ambient air conditions for four storage times (zero, one, two, and three months). There was no difference between the grains stored in the silo-dryer-aerator and silo-storage-aerator at the end of the three-month storage in terms of the physico-chemical quality. The storage time associated with drying at 50 °C caused a reduction in the physical-chemical quality of the grains. The silo-dryer-aerator system was presented as a possible alternative to store soybean (Glycine max L.) grains.Silo-secador-aerador experimental para armazenagem de grãos de soja R E S U M O Objetivou-se com este estudo verificar a capacidade de um equipamento protótipo silosecador-aerador, operando como silo-armazenador-aerador para análise da qualidade dos grãos de soja. Os grãos de soja com teores de água de 17% (b.u.) foram submetidos à secagem e armazenagem em um sistema de silo-secador-aerador, projetado com uma câmara de secagem e quatro células independentes de armazenagem, com capacidade estática de 164 kg. Outro lote de grãos foi armazenado em um silo-armazenador-aerador com capacidade de 1.200 kg. O experimento foi montado em um delineamento experimental inteiramente casualizado, fatorial 5 x 4, sendo cinco lotes de grãos armazenados após a secagem com temperaturas do ar de secagem (30, 40, 50 °C, grãos misturados na secagem com as três temperaturas), nas células 1, 2, 3 e 4, respectivamente, do sistema silo-secador-aerador e um lote de grãos misturados e armazenados no sistema silo-armazenador-aerador nas condições do ar ambiente, quatro tempos de armazenamento (zero, um, dois e três meses). Observou-se que não houve diferença entre os grãos armazenados no silo-secador-aerador e no silo-armazenador-aerador quanto à qualidade físico-química ao final dos três meses de armazenamento. O tempo de armazenamento associado à secagem a uma temperatura de 50 °C proporcionou uma redução na qualidade físico-química dos grãos. O sistema silo-secadoraerador apresentou-se como uma alternativa viável para o armazenamento de grãos de soja.

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pH of exudate test in the physiological quality of crambe seeds

Abstract: Crambe is a rapeseed with high oil content and can be used as a winter cover or as a source of raw material for the production of biodiesel, however espite the growing interest in

Cited by 8 publications

References 9 publications

Exudate - phenolphthalein pH test for evaluation of validity in seeds of Libidibia ferrea

Exudate - phenolphthalein pH test for evaluation of validity in seeds of Libidibia ferrea

pH exudate test as a method to estimate viability and vigor of Citrus limonia Osbeck seeds

Experimental silo-dryer-aerator for the storage of soybean grains

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