scholarly journals Hydric restriction as vigor assessment method of soybean seeds

2012 ◽  
Vol 34 (2) ◽  
pp. 241-246 ◽  
Author(s):  
Denis Santiago da Costa ◽  
Cartiane Rubishirley Macêdo da Rocha ◽  
Ana Dionisia da Luz Coelho Novembre
Keyword(s):  
Aqueous Solution ◽  
Polyethylene Glycol ◽  
Water Potential ◽  
Accelerated Aging ◽  
Assessment Method ◽  
Deionized Water ◽  
Soybean Seeds ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Randomized Experimental Design

The objective of this study was to investigate the possibility of using hydric restriction as a method for evaluating vigor of soybean seeds. The soybean seeds, cultivar BRS 245RR, represented by four different seed lots, were characterized by germination and vigor. For the treatment of hydric restriction and temperature, the combination of substrate water potential and temperature were the following: deionized water (0.0 MPa); polyethylene glycol (PEG 6000) aqueous solution (-0.1, -0.3 and -0.5 MPa); and four temperatures (20 ºC, 25 ºC, 30 ºC, and 35 ºC), respectively. A completely randomized experimental design was used, with four replications per treatment, and the ANOVA was performed individually for each combination of temperature and water potential of substrate. According to results obtained, the test of hydric restriction has the same efficiency of the accelerated aging test in estimating vigor of soybean seeds, cv. BRS 245RR, when water potentials of -0.1 MPa or -0.3 MPa at a temperature of 25 ºC, or -0.3 MPa at a temperature of 30 ºC are used.

scholarly journals Accelerated Aging Test to Determine the Vigor of Mungbean Seeds

2019 ◽  
Vol 11 (7) ◽  
pp. 42
Author(s):  
Luciana Maria da Silva ◽  
Anderson Dias Vaz de Souza ◽  
Rogério Lámim Silva Junior ◽  
Natália Arruda ◽  
Nei Peixoto ◽  
...  
Keyword(s):  
Seed Quality ◽  
Germination Rate ◽  
Accelerated Aging ◽  
Dry Weight ◽  
Precise Determination ◽  
Germination Test ◽  
Accelerated Aging Test ◽  
Seedling Length ◽  
Aging Test ◽  
Randomized Experimental Design

The use of good quality seeds is fundamental for proper establishment of a crop. In this way, for more precise determination of seed quality, vigor tests are performed in addition to the germination test. These tests enable the selection of the best lots for commercialization and planting. This study evaluates the effects of temperature and exposure times of the accelerated aging test for vigor classification of mungbean seed lots. Seeds of the mungbean cultivar Esmeralda were used, being obtained from four cultivated plots at the State University of Goiás (UEG), Ipameri Câmpus, in the 2013, 2015, 2016, and 2017 harvests. The lots were initially characterized using germination and vigor tests (first germination count, germination rate index, seedling length, and seedling fresh and dry weight). The accelerated aging test was conducted with a completely randomized experimental design, in a 2 × 4 factorial arrangement consisting of two temperatures (40 and 42 °C) and four times (24, 48, 72, and 96 hours), with four replicates of 50 seeds per lot. The lots showed significant differences in the germination test, first germination count, germination rate index, and seedling length. The accelerated aging test was efficient in classifying lots. Lot 3 obtained the best results, while lot 1 obtained the lowest ones. The combination of 42 °C temperature and 72 h of seed exposure to the accelerated aging test is the best to classify mungbean seed lots.

scholarly journals Slurry Composition and Physiological Quality of Treated Soybean Seeds Over Storage

2018 ◽  
Vol 11 (1) ◽  
pp. 376
Author(s):  
Andréia K. Suzukawa ◽  
Giovanna E. G. Mariucci ◽  
Lucas C. Pereira ◽  
Alessandro L. Braccini ◽  
Raissa M. Ponce ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Accelerated Aging ◽  
Storage Period ◽  
Soybean Seeds ◽  
Time Model ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Physiological Quality ◽  
Slurry Composition

Industrial seed treatment assures uniform coverage of seeds with insecticides, fungicides, micronutrients and bioestimulant at precise dose, however often resulting in higher slurry volume. Furthermore, seeds are coated long periods of time prior sowing and may influence germination and vigor. Thus, the aim of this work was to evaluate the influence of seven industrial seed treatments and their respective slurry volumes on the physiological potential of soybean seeds at 0, 15, 30, 45, 60 and 90 days of storage. In each storage period, the variables germination, accelerated aging test and emergency speed index were evaluated and studied in the repeated measures in time model. The products used were: fungicide (thiabendazole, fludioxonil and mefenoxam), insecticide (thiametoxam), insecticide/nematicide (abamectin), micronutrients (cobalt and molybdenum), bioregulator, drying powder and polymer. High volumes of seed-coating mixtures reduce the physiological quality of soybean seeds over storage. However, the slurry composition also influenced on the maintenance of the seed germination and vigor throughout the storage.

scholarly journals SUITABILITY OF ELECTRICAL CONDUCTIVITY TESTING AND ACCELERATED AGING FOR EVALUATING THE VIGOR OFCITHAREXYLUM MYRIANTHUM CHAM. DIASPORES

FLORESTA ◽  
2019 ◽  
Vol 49 (4) ◽  
pp. 701
Author(s):  
Ana Paula Bazzanella ◽  
Gabriele Larissa Mathias ◽  
Henrique Roberto Gattermann Mittelstaedt ◽  
Maiara Iadwizak Ribeiro ◽  
Andréa Maria Teixeira Forte ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Accelerated Aging ◽  
Germination Test ◽  
High Demand ◽  
Tukey Test ◽  
Aging Period ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Randomized Experimental Design ◽  
Native Tree Species

The Atlantic Forest is one of the most threatened Brazilian biomes by anthropic action. Thus, the interest inrecovering degraded areas through the use of native tree species has increased, causing a high demand in the use of vigorous seeds. This research aimed at evaluating the suitabilityof the electrical conductivity and accelerated aging tests to evaluate the vigor of C. myrianthum diaspores. For the adequacy of the electrical conductivity test, a completely randomized experimental design (CRD) was used in a 2 x 3 x9 (number of diaspores x volume of water x imbibition time)at a constant temperature of 25 °C. The procedure for the accelerated aging test was conducted at 40 ºC for 0 (no aging), 24, 48 and 72 hours. ACRDwas also used for the accelerated aging test, totaling 4 treatments. The results were submitted to analysis of variance (ANOVA) and the means were compared by the Tukey test at 5% probability. It is concluded that the electrical conductivity test for C. myrianthum diaspores can be conducted with 25 diaspores soaked with 50 mL of deionized water for 96 hours, thus replacing the germination test with the advantage of being carried out in a shorter period of time. Moreover,the 24 and 48 hour accelerated aging period is adequate to discriminate the vigor of C. myrianthum diaspores, with GSI and MGT being the most sensitive variables.

scholarly journals Accelerated aging test and its relationship to physiological potential of soybean seeds

2019 ◽  
Vol 41 (3) ◽  
pp. 301-308 ◽  
Author(s):  
Thaisa Cavalieri Matera ◽  
Lucas Caiubi Pereira ◽  
Alessandro Lucca Braccini ◽  
Francisco Carlos Krzyzanowski ◽  
Carlos Alberto Scapim ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Linear Regression Analysis ◽  
Accelerated Aging ◽  
Soybean Seeds ◽  
Seedling Vigor ◽  
Accelerated Aging Test ◽  
Randomized Experimental Design ◽  
Field Emergence ◽  
Physiological Tests ◽  
Relationship Of

Abstract: Although accelerated aging is one of the tests most used for evaluation of the physiological quality of soybean seeds, there are few studies that relate it to other physiological tests used for the crop. In this context, the objective of this study was to investigate the relationship of accelerated aging to the results of physiological performance obtained in the vigor tests most frequently used in the soybean quality control system (germination, first count, seedling vigor classification, accelerated aging, electrical conductivity, emergence speed index, final emergence in sand substrate, and field emergence). The experiment was conducted with seeds that had different vigor levels, adopting a completely randomized experimental design with four replications. Pearson simple correlation analysis (r) and simple linear regression analysis at both 1% and 5% probability were conducted on the data. The results showed that the seedling vigor classification test (r = 0.9160) and the field emergence test (r = 0.9198) were those that best correlated with accelerated aging, followed by the germination (r = 0.8690), first count of germination (r = 0.8460), and electrical conductivity (r = 0.8912) tests.

scholarly journals Physiological quality of soybean seeds of cultivars submitted to harvesting delay and its association with seedling emergence in the field

2013 ◽  
Vol 35 (2) ◽  
pp. 147-152 ◽  
Author(s):  
Fábio Oliveira Diniz ◽  
Múcio Silva Reis ◽  
Luiz Antônio dos Santos Dias ◽  
Eduardo Fontes Araújo ◽  
Tuneo Sediyama ◽  
...  
Keyword(s):  
Seed Quality ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Soybean Seeds ◽  
Test Results ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Physiological Quality ◽  
The Relationship

With the aim of studying the relationship between the physiological quality of soybean seeds submitted to three harvest times and seedling emergence in the field, seeds of cultivars UFV-16, Splendor, Vencedora, Confiança, UFV-18, UFV-TN 105, Garantia and Celeste were harvested at stages R8, R8+15 and R8+30 days. The following tests were performed: accelerated aging, electrical conductivity, emergence in sand, emergence speed index and seedling emergence in the field. Germination and vigor were reduced in seeds harvested at 30 days after stage R8 in all the tests, except for the accelerated aging test, which showed a decline in vigor seeds harvested with a delay of 15 days. Seeds of cultivars UFV-16, Confiança and Garantia showed lower physiological quality in most tests, while the seeds of cultivar Celeste had higher physiological quality than the others. There was similarity between the test results of seed quality and seedling emergence in the field.

scholarly journals Envelhecimento acelerado em sementes de sorgo sacarino Sorghum bicolor (L.) Moench

2017 ◽  
Vol 12 (3) ◽  
pp. 374
Author(s):  
Cristiane Deuner ◽  
Andréia Da Silva Almeida ◽  
Matheus Luiz Testa ◽  
Anna Dos Santos Suñé ◽  
Lilian Madruga de Tunes
Keyword(s):  
Sorghum Bicolor ◽  
Sweet Sorghum ◽  
Accelerated Aging ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Accelerated Aging Test ◽  
Seed Analysis ◽  
Aging Test ◽  
Randomized Experimental Design

<p>O sorgo sacarino é cultivado a partir de sementes, necessitando técnicas adequadas de produção, colheita e secagem das mesmas para garantir sua disponibilidade e qualidade. Objetivou-se avaliar a qualidade inicial estudando uma metodologia mais adequada do teste de envelhecimento acelerado para a avaliação do potencial fisiológico de sementes de sorgo sacarino. A pesquisa foi conduzida no Laboratório Didático de Análise de Sementes do Departamento de Fitotecnia, Universidade Federal de Pelotas, em Pelotas, Rio Grande do Sul. Utilizou-se delineamento experimental inteiramente casualizado com 4 repetições. Foram utilizados quatro lotes de sementes de sorgo sacarino. Inicialmente, foi avaliada a qualidade inicial das sementes através dos seguintes testes: teor de água, germinação, primeira contagem de germinação e emergência a campo. Após, os lotes foram submetidos ao teste de envelhecimento tradicional e com uso se solução salina saturada (NaCl), nos períodos de 12, 24, 48, 72, 96 e 120h à 41 ºC. A exposição das sementes por 24h a 41 ºC no envelhecimento acelerado com uso de solução saturada de NaCl e por 48h a 41 ºC no envelhecimento acelerado tradicional são adequados para diferenciar lotes de sementes de sorgo sacarino.</p><p align="center"><strong><em>Accelerated aging in sorghum sacarino seeds </em></strong><em>Sorghum bicolor<strong> (L.) </strong></em><strong><em>Moench</em></strong></p><p><strong>Abstract</strong><strong>: </strong>Saccharin sorghum is cultivated from seeds, requiring adequate production, harvesting and drying techniques to ensure the availability of quality seed and, therefore. The objective was to evaluate the initial quality by studying a more adequate methodology of the accelerated aging test for the evaluation of the physiological potential of sorghum seeds. The research was conducted in the Laboratory of Seed Analysis of the Department of Plant Science, Federal University of Pelotas, in Pelotas, Rio Grande do Sul. A completely randomized experimental design with 4 replicates was used. Four lots of sweet sorghum seeds were used. First we assessed the quality of the seeds by the following tests: water content, germination, first count and emergency field. Following evaluation of initial quality, lots were submitted to the traditional aging test and use saturated saline, in periods of 12, 24, 48, 72, 96 and 120 hours at 41 °C. Exposure of seeds for 24 hours at 41 °C in accelerated aging with saturated NaCl and use for 48h at 41 °C in traditional accelerated aging are suitable to differentiate batches of sweet sorghum seeds.<strong></strong></p>

scholarly journals Adequacy of the accelerated aging test for soybean seeds

2021 ◽  
Vol 17 (4) ◽  
pp. 1-13
Author(s):  
Anna dos Santos Suñé ◽  
Andréia da Silva Almeida ◽  
Josiane Cantuária Figueiredo ◽  
Bruna Barreto dos Reis ◽  
Camila de Avila Nunes ◽  
...  
Keyword(s):  
Water Content ◽  
Accelerated Aging ◽  
Soybean Seeds ◽  
Distilled Water ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Initial Characterization ◽  
Pre Treatment ◽  
Forced Air

Seed companies use vigor tests in their internal seed quality control procedures. Therefore, it is necessary to choose effective methods to obtain quick responses for making decisions related to the handling, disposal and marketing of seed lots. Thus, the objective of this work was to adapt a methodology for the accelerated aging test in soybean seeds. Sixty-nine lots were used and the experimental design used was completely randomized, with four replications. For the initial characterization of the lots, water content was determined, germination test and field emergence. The soybean seed lots selected based on the initial characterization, were submitted to the standard accelerated aging methodology and twenty-one adapted methodologies. After the physiological characterization of the 69 lots, 24 lots with similar germination with different levels of vigor were selected. For adapted methodologies that used only distilled water inside the gerbox box, there was an increase in the water content of the seeds of all analyzed lots. However, all methodologies with the use of saline solution had alower water content. The adapted methodologies N (pre-treatment in forced air oven at 35-40°C for two hours, BOD 42°C for 24 hours, using saline) and S (pre-treatment in forced air oven at 35-40°C for two hours, BOD 45°C for 12 hours, with the use of distilled water) are the most suitable for use in the accelerated aging test for soybean crops, as they present relevant results in a shorter evaluation period.

scholarly journals Accelerated aging methodologies for evaluating physiological potential of treated soybean seeds

2021 ◽  
Vol 43 ◽  
Author(s):  
Rayssa Fernanda dos Santos ◽  
Henrique Fabrício Placido ◽  
Leonardo Lemes Bosche ◽  
Hugo Zeni Neto ◽  
Fernando Augusto Henning ◽  
...  
Keyword(s):  
Seed Treatment ◽  
Storage Time ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Soybean Seeds ◽  
Nacl Solution ◽  
Thiophanate Methyl ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Physiological Quality

Abstract: This work evaluated the efficiency of accelerated aging test to determine the physiological potential in treated soybean seeds with fungicides and insecticides, in addition to analyzing the concordance between the results obtained by different accelerated aging methods with the actual results of the physiological quality in seeds after the storage. The study was divided into two experiments, both with entirely randomized delineation, with four replications. In the first experiment, seed germination was evaluated after imposing some treatments that were arranged in a 3 x 2 x 3 factorial scheme: seed treatment (imidacloprid + thiodicarb; fipronil + thiophanate methyl + pyraclostrobin; no treatment); vigor levels (high; low); and accelerated aging (traditional; saturated NaCl solution; no aging). In the second experiment, seedling emergence was evaluated after applying some treatments that were arranged in a 3 x 2 x 2 factorial scheme: seed treatment (imidacloprid + thiodicarb; fipronil + thiophanate methyl + pyraclostrobin; no treatment); vigor levels (high; low); storage time (0 and 135 days). The accelerated aging methods were efficient to determine the physiological potential of the seeds, in which, the NaCl method presented better results. The physiological potential of soybean seeds decreased throughout storage and the application of chemicals in seed treatment impaired the germination and emergence percentages, regardless of the active ingredient used. The accelerated aging method with NaCl presents greater agreement with the actual storage results.

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