Teste de condutividade elétrica em sementes de soja armazenadas sob diferentes temperaturas

Fessel, Simone Aparecida; Panobianco, Maristela; Souza, Cláudia; Vieira, Roberval Daiton

doi:10.1590/s0006-87052010000100026

Cited by 36 publications

(34 citation statements)

References 9 publications

(5 reference statements)

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“…The best quality of cooled seeds, over storage, can be related to the lower temperature of the seed mass in the first 15 days of storage (Figure 2A). It has been observed that the temperature affects the leaching of solutes in soybean seeds (Vieira et al, 2008;Fessel et al, 2010). However, there is no direct relationship between the leaching of solutes and the content of fatty acids and carbohydrates in seeds (Panobianco and Vieira, 2007).…”

Section: Relative Humidity (%)mentioning

confidence: 99%

Physiological quality of dynamically cooled and stored soybean seeds

et al. 2013

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-Storage is an important step in the production of soybean seeds, mainly in tropical regions, where high temperatures can drastically reduce seed quality. The storage at cooler temperatures may be a feasible alternative to preserve seed quality during storage. The objective of this study was to evaluate the physiological quality of soybean seeds artificially cooled by a dynamic process and stored in an environment, with non controlled temperature and relativity humidity. Two seed lots of cultivars Monsoy 8757, TMG 115 RR and BRS Valiosa RR were used. After processing and during packaging the seeds were cooled to 18 o C by a dynamic process. Seed samples were collected after 0, 60 and 120 days of storage, using the following parameters germination, accelerated aging, seedling emergence in sand, speed of emergence index, electrical conductivity, tetrazolium and seed health. Although soybean seeds artificially cooled by the dynamic method may have slightly superior performance in maintaining physiological quality during storage in non-refrigerated warehouse, for lots of high physiological quality, these advantages are not observed.

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Section: Relative Humidity (%)mentioning

confidence: 99%

Physiological quality of dynamically cooled and stored soybean seeds

et al. 2013

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“…However, variation in electrical conductivity values, over the experiment, indicates that the test wasn't sensitive enough to detect a decrease in beans vigor, corroborating with Silva et al (2012), who studied beans of high vigor; with Fessel et al (2010) who tested soy seeds stored at 10 and 20 ºC, and finally with Soares et al (2010), using sorghum seeds. However, the test was effective to distinguish beans vigor in Santos et al (2005) work, and also to batches of beans studied by Cassol et al (2012), during storage for eight and three months, respectively.…”

Section: Resultsmentioning

confidence: 61%

“…High concentrations -of the above substances -can be an indicative of vigor and germination loss (MARCOS FILHO, 2005;BINOTTI et al, 2008). Among the best studied electrolytes, to try establishing a correlation with physiological quality of seeds, are calcium, magnesium and potassium, which are researched by many authors (BINOTTI et al, 2008;COSTA et al, 2008;FESSEL et al, 2010;SILVA et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Biochemical behavior of bean seeds and grains during storage

et al. 2016

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ABSTRACT:The development of researches about vigor provides greater insight about the physiological behavior of seeds over storage periods. The aim of this study was to evaluate the biochemical changes which occurred in beans stored for 360 days. Analyses were performed at 0, 30, 90, 180, 270, and 360 days after receiving the seeds (S1 and S2) and grains (G1 and G2) of BRS Splendor. The following tests were conducted: water content, electrical conductivity, and chemical composition of the soaking solution, where sugars and ions Fe 2+ , Zn, Ca 2+ , Mg 2+ and K + were quantified. The experimental design was completely randomized split-plot and means were compared through Tukey test (p>0.05). Water content decreased after 90 days, and after 180 days reached an average of 16%. The electrical conductivity showed the greatest loss of solute after 90 days. Larger amounts of soluble sugars were found in S1 and G1. The quantities of potassium and calcium decreased after 360 days, while magnesium increased after 90 days of storage. The electrical conductivity test showed no direct relation to the quantification of the investigated ions. The amount and behavior of amino acids and studied ions did not showed relation to the decrease in vigor of beans.

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“…According to Coradi et al (2011), reading the electrical conductivity of the solution containing the seeds can be used to evaluate this effect, since the conductivity value is related to the amount of ions leached into solution, which is directly associated with cell membrane integrity; poorly structured damaged cells and membranes are generally associated with seed deterioration and, therefore, the low vigor. The lowest values, corresponding to the lowest level of ions indicate high physiological vigor and show less intense disorganization of the cell membrane system (PANOBIANCO et al, 2007;FESSEL et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

Alternatives of storage of corn grains for the conditions of the brazilian cerrado

et al. 2016

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ABSTRACT:The storage of grains under technical conditions in favorable environment ensures grain quality and regulates the supply of raw material for food production. For this reason, the objective of this study was to evaluate the different forms of storage (aerated silo, non-aerated silo, silo bags and airtight) of grains produced in the Brazilian cerrado, over time (zero, three and six months), for different physical qualities of maize (normal grains, whole grains and broken grains). The research was conducted at the Federal University of Mato Grosso do Sul (UFMS), Chapadão do Sul Campus (CPCS), Grain Postharvest Laboratory. To determine the physical-chemical quality and the physical properties of grains over six months, samples were taken from the stored lots. Analysis of variance and comparison of means by Tukey's test were conducted at 5% probability. The six-month storage time was the main factor contributing to the reduction of the quality of maize grains. Storage alternatives with aeration, non-aeration, bags and airtight environment did not influence the physical properties of maize grains. The broken maize grains showed the worst physical and chemical quality during storage time, while the batch of whole corn grains differ in quality during storage. It was concluded that airtight storage and storage in aerated silos were the conditions that best preserved the physical and chemical quality of maize grains over time.

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Teste de condutividade elétrica em sementes de soja armazenadas sob diferentes temperaturas

Cited by 36 publications

References 9 publications

Physiological quality of dynamically cooled and stored soybean seeds

Physiological quality of dynamically cooled and stored soybean seeds

Biochemical behavior of bean seeds and grains during storage

Alternatives of storage of corn grains for the conditions of the brazilian cerrado

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