scholarly journals Temperature during soybean seed storage and the amount of electrolytes of soaked seeds solution

2008 ◽  
Vol 65 (5) ◽  
pp. 496-501 ◽  
Author(s):  
Roberval Daiton Vieira ◽  
Dennis Merlin TeKrony ◽  
Dennis Bruce Egli ◽  
William Patrick Bruenning ◽  
Maristela Panobianco
Keyword(s):  
Electrical Conductivity ◽  
Storage Temperature ◽  
Soybean Seed ◽  
Storage Period ◽  
Seed Storage ◽  
Seed Vigor ◽  
Soybean Seeds ◽  
Glycine Max L ◽  
Pea Seeds ◽  
And Storage

The electrical conductivity test measures the electrolytes that leach out of seeds when they are immersed in water and this leakage is an indication of seed vigor. The level of standardization reached by the procedures of this test is such that the test is recommended for pea seeds and suggested for other large seeded legumes, including soybean [Glycine max (L.) Merrill]. This study was conducted to contribute to the standardization of this test for soybean seeds by verifying whether the seed storage temperature influences the composition of the leachate from soaked seeds solution. Two soybean seed lots of distinct physiological potential were stored in moisture-proof containers either at constant temperatures of 10ºC and 20ºC or at the temperature of 20ºC during the first seven months of storage followed by a change to 10ºC for the rest of the storage time (nine months). The chemical composition of the soaked water was evaluated every three months from January to October 1998. The highest amount of leakage was observed for potassium, followed by calcium and magnesium, iron and sodium regardless of temperature and storage period. The amount of electrolytes in the soaked water increased as the period of time and the temperature of storage increased. On the other hand the amount of leakage decrease along the time for those seeds stored at 10ºC or transferred from the temperature of 20 to that of 10ºC. The temperature at which soybean seeds remain during storage may affect the amount of electrolytes in the soaked water and consequently the results of the electrical conductivity test.

scholarly journals Perilaku Biokimia Benih Kedelai Selama Penyimpanan dalam Kondisi Terkontrol

2017 ◽  
Vol 44 (3) ◽  
pp. 255
Author(s):  
Irma Noviana ◽  
Abdul Qadir ◽  
Dan Faiza Chairani Suwarno
Keyword(s):  
Electrical Conductivity ◽  
Peroxide Value ◽  
Seed Viability ◽  
Storage Period ◽  
Seed Storage ◽  
Seed Vigor ◽  
Biochemical Changes ◽  
Soybean Seeds ◽  
Controlled Conditions ◽  
Randomized Design

ABSTRACT<br /><br />Physiological and biochemical changes in seeds indicates levels of viability and vigor during deterioration. The aims of the research were to study the patterns of biochemical changes in soybean seeds and its relationship to seed vigor during storage under controlled conditions. The experiment was arranged in a completely randomized design using two varieties as a factor which was nested into storage period and replicated four times. Two varieties were Gepak Kuning and Mallika, stored in controlled condition at temperature of 19-22 °C and 64-67% of relative humidity for six months. The seeds were evaluated for protein, peroxide value, electrical conductivity and seed viability. The exponential regression analysis was used to determine the patterns of biochemical changes of each soybean varieties during the storage period. The results showed that the biochemical behaviour of soybean seeds stored under controlled conditions for 24 weeks following the exponential equation of y = a + b expcx, which a, b, and c were constants that has different value for each variety. Electrical conductivity and peroxide value could be used as indicators of seed vigor during storage under controlled conditions for 24 weeks. Seed storage under controlled conditions are to maintain seed vigor &gt;80% up to 12 weeks for Mallika and 24 weeks for Gepak Kuning with low oxidative process and less membrane damages.<br /><br />Keywords:deterioration, storability, vigor<br /><br />

scholarly journals Assessment of physiological potential of stored pea (Pisum sativum L.) seeds

2013 ◽  
Vol 35 (1) ◽  
pp. 42-50 ◽  
Author(s):  
Fábio Mielezrski ◽  
Julio Marcos-Filho
Keyword(s):  
Electrical Conductivity ◽  
Growth Habit ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Seed Storage ◽  
Seed Vigor ◽  
Seedling Length ◽  
Pea Seeds ◽  
Cold Chamber ◽  
Pea Seed

Research on pea seed storage and the identification of efficient seed vigor tests for this species is still insufficient, especially for cultivars that produce wrinkled seeds used for consumption in natura. The objective of this study was to verify the accuracy of tests to assess the physiological potential of pea seed lots stored in different environments. Four seed lots of two cultivars, 'Telefone Alta' (indeterminate growth habit) and 'Itapuã' (determinate growth habit) were stored under different environmental conditions for 8 months: a) laboratory uncontrolled b) dry and cold chamber (10 ºC and 30% RH), c) controlled environment (20 ºC and 70% RH). Seed vigor (accelerated aging, electrical conductivity, seedling length and seedling emergence) was evaluated initially and after four and eight months storage. Results showed that the use of seed lots of high initial physiological potential is fundamental for guaranteeing the desired performance of pea seeds during storage. Wrinkled pea seeds should be stored between harvest and sowing in an environment in which the sum of the relative humidity (%) and temperature (°C) does not exceed 70. Physiological potential of pea seeds should be evaluated by at least two vigor tests; consideration to accelerated aging and electrical conductivity tests is recommended.

scholarly journals Influence of lignin content in soybean seed coat on the incidence of the storage fungus Aspergillus flavus

2012 ◽  
Vol 34 (4) ◽  
pp. 541-548 ◽  
Author(s):  
Ísis Barreto Dantas ◽  
João Almir de Oliveira ◽  
Heloisa Oliveira dos Santos ◽  
Édila Vilela Resende Von Pinho ◽  
Sttela Dellyzete Veiga Franco da Rosa
Keyword(s):  
Electrical Conductivity ◽  
Aspergillus Flavus ◽  
Seed Coat ◽  
Seed Quality ◽  
Lignin Content ◽  
Soybean Seed ◽  
Storage Period ◽  
Seed Storage ◽  
Seed Health ◽  
Physiological Quality

Seed quality may be affected by several factors, including permeability, color, and lignin content in the seed coat. This study aimed at evaluating influence of lignin content in the tegument of seed samples of six different soybean cultivars, in which half of each sample was inoculated with the fungus Aspergillus flavus, on the physical and physiological quality, and on the seed health, during 180 days storage period, under cold chamber with controlled conditions of temperature and RH. For that, at each interval of 60 days, samples were removed, and the physiological quality of these seeds was assessed by means of moisture and lignin contents; and by tests of seed health, germination, and electrical conductivity. The moisture content of seeds remained constant during all storage period. In the seed health test, it was found that inoculation was efficient, once the minimum incidence of the fungus in the inoculated seeds was 85%. In the germination test, there was a trend of reduction on percentage germination with the increase in storage period. However, there was an increase on electrical conductivity of seeds assessed. It was concluded that there is no interference of the lignin content in the seed coat on the resistance to infection by the fungus Aspergillus flavus, even after seed storage for a period of 180 days.

scholarly journals Is it possible to estimate longevity through the analyses used to measure the initial physiological potential in soybean seeds?

2021 ◽  
Vol 43 ◽  
Author(s):  
Thiago Barbosa Batista ◽  
Samara Moreira Perissato ◽  
Carlos Henrique Queiroz Rego ◽  
Gustavo Roberto Fonseca de Oliveira ◽  
Fernando Augusto Henning ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Linear Regression ◽  
Soybean Seed ◽  
Accelerated Aging ◽  
Storage Period ◽  
High Potential ◽  
Seed Longevity ◽  
Soybean Seeds ◽  
Radicle Protrusion ◽  
Over Time

Abstract: The analysis of longevity can support decisions about the length of seed lot storage until commercialization, since this characteristic implies the maintenance of viability over time. Seed longevity is analyzed by the p50 test, which expresses the time to lose 50% of the initial viability. Seeds with high vigor and germination have greater physiological potential and, thus, a greater capacity to maintain quality throughout the storage period. However, there has been little research on the correlations between the analysis of p50 (longevity) and the tests used to measure physiological potential (germination and vigor) of lots, which can be used as a tool to make inferences about longevity using the most traditional tests. Thus, the objective of this study was to investigate which tests used to measure the potential of lots can estimate p50. To this end, germination and vigor were evaluated using traditional tests while longevity was assessed in eight soybean seed lots. Correlations and linear regression were tested for the traditional variables versus p50. It was found that the use of accelerated aging, electrical conductivity, and time to 50% radicle protrusion has high potential to estimate longevity as measured by p50.

scholarly journals Harvest delay, storage and physiological quality of soybean seeds

2019 ◽  
Vol 41 (4) ◽  
pp. 506-513
Author(s):  
Rafael Vergara ◽  
Raimunda Nonata Oliveira da Silva ◽  
Arieli Paula Nadal ◽  
Gizele Ingrid Gadotti ◽  
Tiago Zanatta Aumonde ◽  
...  
Keyword(s):  
Seed Quality ◽  
Local Development ◽  
Block Design ◽  
Soybean Seed ◽  
Accelerated Aging ◽  
Storage Period ◽  
Seed Vigor ◽  
Soybean Seeds ◽  
Randomized Block Design ◽  
Harvest Delay

Abstract: Soybean is one of the leading commodities in Brazilian agribusiness. Its cultivation is widespread in different seed-producing regions of the country, where it generates income and local development. In this context, the soybean seed is a fundamental input, as its quality strongly influences the success of the crop. However, the period after the achievement of physiological maturity is critical for the maintenance of seed quality. For that reason, this study aimed at evaluating the effect of harvest delay on both the initial and final qualities of soybean seeds. The research consisted of four harvest times, in which the initial quality was assessed through tests of first germination count, germination, accelerated aging and tetrazolium. After 120 days of storage, the germination and accelerated aging tests were once again conducted. The experiment complied with a completely randomized block design with eight replications. The rainfall was monitored during the pre-harvest phase. All variables experienced negative impacts due to the delay in harvesting. Also, the seeds suffered more damage as the delay progressed, and the variables germination and seed vigor decreased after the storage period.

scholarly journals Agrochemicals and storage times on soybean seed vigor

2017 ◽  
Vol 52 (2) ◽  
pp. 129-132 ◽  
Author(s):  
Wilian Vinicius Bortoletto ◽  
Willian Rodrigues Macedo ◽  
Thalyta Coelho de Oliveira ◽  
Daniela Silva Souza
Keyword(s):  
Seed Treatment ◽  
Storage Time ◽  
Germination Rate ◽  
Soybean Seed ◽  
Seed Vigor ◽  
Soybean Seeds ◽  
Fresh Matter ◽  
Optimal Period ◽  
Storage Times ◽  
And Storage

Abstract: The objective of this work was to investigate the potential physiological damage of the treatment of '97Y07RR' soybean seeds with different pesticides at different storage times, in order to define the optimal period of sowing. The germination rate, the germination speed index, and shoot fresh matter were evaluated. Thiamethoxam did not cause losses in seed vigor with increasing storage time; however, the other agrochemicals caused significant losses. Seed treatment should be performed up to 90 days before sowing.

scholarly journals Study of storage on seed germination of Chresta sphaerocephala DC. – Asteraceae

2021 ◽  
Vol 10 (9) ◽  
pp. e50110917893
Author(s):  
Amanda Domingas Ediodato de Sousa ◽  
Luciana Botezelli ◽  
Patrícia Neves Mendes
Keyword(s):  
Seed Germination ◽  
Storage Temperature ◽  
Morphological Difference ◽  
Seed Storage ◽  
Seed Vigor ◽  
Significance Level ◽  
Different Temperatures ◽  
And Storage ◽  
Storage Temperatures ◽  
Germinated Seeds

High-altitude fields have been subjected to an intense anthropization process. Due to this, studies on germination, seed storage and propagation of species that compose this plant formation become fundamental. Among such species is the Chresta sphaerocephala DC., Asteraceae. The purpose of this work was to study different temperatures for germination and storage of this species. Four germination temperatures (15°C, 20°C, 25°C and 30°C) and two storage temperatures (-5°C and +5°C) were tested. In order to assess seed vigor, the germination speed index (GSI) and average seed germination time were calculated. ANOVA and Tukey's test were performed at a 5% significance level. In addition, a morphological difference was observed in the analyzed Chresta sphaerocephala seeds, with these being classified as C1 (small seeds), C2 (long thin seeds), C3 (thicker seeds) and C4 (dark colored seeds). As for the storage temperature, 5°C was shown to be the best. When correlated with the germination temperature, 20°C resulted in a statistically higher number of germinated seeds.

scholarly journals Electrical conductivity and soybean seedling emergence

2004 ◽  
Vol 61 (4) ◽  
pp. 386-391 ◽  
Author(s):  
Julio Cesar Fachini Colete ◽  
Roberval Daiton Vieira ◽  
Alek Sandro Dutra
Keyword(s):  
Electrical Conductivity ◽  
Water Potential ◽  
Laboratory Tests ◽  
Seedling Emergence ◽  
Soybean Seed ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Before And After ◽  
Glycine Max L ◽  
The Relationship

Evaluation of soybean [Glycine max (L.) Merrill] seeds vigor and its relation with field seedling emergence can provide secure indicatives of seed physiological potential. The present research studied the relationship between the electrical conductivity test and the seedling emergence of soybean in field and laboratory. The field experiment was sown in November 26th, December 3td and 10th, 2000. Laboratory tests were performed using levels of water potential in the substrate (soil) -0.03; -0.2; -0.4; and -0.6 MPa. Fourteen seed lots, seven of 'Embrapa 48' and seven of 'BRS 133' soybean cultivars were used. Laboratory tests comprised seed water content determination, before and after the accelerated aging; germination and vigor tests (accelerated aging and electrical conductivity). Germination and seedling emergence decreased as the substrate water potential was reduced, indicating a relationship among the germination, water potential and seed vigor. For the 'Embrapa 48' higher vigor seed lots, the best performance occurred at -0.6 MPa water potential. The electrical conductivity test may be efficient to evaluate soybean seed vigor and, consequently, the performance potential in the field. However, further studies are necessary to determine the values or the range of values that indicate the seed vigor level and the adequate use of a given seed lot.

scholarly journals Electrical conductivity as an indicator of pea seed aging of stored at different temperatures

2007 ◽  
Vol 64 (2) ◽  
pp. 119-124 ◽  
Author(s):  
Maristela Panobianco ◽  
Roberval Daiton Vieira ◽  
Dilermando Perecin
Keyword(s):  
Electrical Conductivity ◽  
Low Temperatures ◽  
Storage Temperature ◽  
Membrane Integrity ◽  
Soybean Seed ◽  
Accelerated Aging ◽  
Storage Period ◽  
Cellular Membrane ◽  
Membrane Repair ◽  
Seed Deterioration

Research on soybean seed has revealed that conductivity test results may be influenced by storage temperature and that an apparent direct relationship between deterioration at low temperatures and loss of cellular membrane integrity is not evident. The objective of this study was to verify the influence of low storage temperatures on electrical conductivity results in other species, such as seeds of two pea cultivars studied temperatures were: 10, 20, 25, 20/10 and 25/10ºC. The physiological potential of the seeds was evaluated every three months during an 18 month storage period using germination, accelerated aging and electrical conductivity tests. The electrical conductivity test was not a good indicator for the degree of seed deterioration stored at low temperatures. Seed deterioration at 10ºC did not seem to be directly related to the loss of membrane integrity, possibly due to membrane repair or reorganization during storage at this temperature.

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