scholarly journals Envelhecimento acelerado de sementes de Celosia argentea e Celosia cristata

2018 ◽  
Vol 24 (4) ◽  
pp. 459-465
Author(s):  
Janine Farias Menegaes ◽  
Geovana Facco Barbieri ◽  
Rogério Antônio Bellé ◽  
Ubirajara Russi Nunes ◽  
Tiéle Stucker Fernandes ◽  
...  
Keyword(s):  
Heat Exposure ◽  
Accelerated Aging ◽  
Average Moisture Content ◽  
Randomized Design ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Celosia Argentea ◽  
Celosia Cristata ◽  
Two Temperatures ◽  
Cold Chamber

Celosia argentea L. and Celosia cristata L. are plants that are differentiated by the intensity and color of their flowering, and can be used as garden or cut-flower, with characteristic propagation by seeds produced in large quantities. The present study aimed to evaluate the physiological and sanitary quality of Celosia argentea and Celosia cristata seeds subjected to the accelerated aging test. The experiment was carried out in October 2016, using a completely randomized design, in a 2 × 6 factorial scheme (two temperatures: 41 and 45 oC and six periods of heat exposure: 0 (control), 24, 48, 72, 96 and 120 h), with four replicates of 50 seeds, for the two species of cockscomb (C. argentea and C. cristata). The seed lots of the two species of celosia are from the crops in the year 2012 and were stored in a cold chamber (15 oC and 40% RH), with an average moisture content of 11% and a mean germination of 98%. After the accelerated aging test, the physiological and sanitary qualities of the seeds of the two species of celosia were evaluated. We conclude that the accelerated aging proved to be effective for the evaluation of vigor, germination and emergence in the species field, when submitted to temperatures of 41 and 45 oC up to 120 h.

scholarly journals Qualidade fisiológica e sanitária de sementes de celosias armazenadas por diferentes períodos

2019 ◽  
Vol 25 (1) ◽  
pp. 34-41
Author(s):  
Janine Farias Menegaes ◽  
Geovana Facco Barbieri ◽  
Rogério Antônio Bellé ◽  
Ubirajara Russi Nunes
Keyword(s):  
Moisture Content ◽  
Relative Frequency ◽  
Average Moisture Content ◽  
Kraft Paper ◽  
Randomized Design ◽  
Celosia Argentea ◽  
Celosia Cristata ◽  
Completely Randomized Design ◽  
Cold Chamber

The objective was to evaluate the physiological and sanitary quality of cockscomb seeds stored for different periods. The experiment was conducted in a completely randomized design, with a 2x5 factorial scheme (two species of cockscomb: Celosia argentea L. and Celosia cristata L., and five seed lots with different storage periods: 0, 4, 8, 12 and 16 years, from the date of harvest) with four replicates. After harvesting each batch of seeds, in their respective years, they were stored with an average moisture content of 11% and average germination of 98% in cold chamber in packages of Kraft paper (15 ºC and 40% RH). It was observed that the average vigor (first count of germination) of the seeds of the two species of cockscomb was 88%, and the average germination of normal seedlings was 89 and 96% for the C. argentea and C. cristata species, respectively, with mean germination of 2.9 days for all storage periods. The relative frequency demonstrated homogeneity in the germination of the two species of cockscomb maintaining germinative viability in all periods of storage. It is concluded that the physiological potential and sanitary quality of the seeds of the C. argentea and C. cristata were preserved for periods ranging from zero to sixteen years of storage.

Reduction of the Forage Seeds Physiological Quality by the Contact with Fertilizer in the Crop-Livestock Integration

2019 ◽  
pp. 1-11
Author(s):  
Anne Caroline Dallabrida Avelino ◽  
Dayana Aparecida De Faria ◽  
Carlos Eduardo Avelino Cabral ◽  
Joadil Gonçalves De Abreu ◽  
Elisangela Clarete Camili ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Contact Time ◽  
Accelerated Aging ◽  
Germination Percentage ◽  
Randomized Design ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Physiological Quality ◽  
Completely Randomized Design ◽  
Seeds Germination

The aim of this study was to evaluate the effects of Brachiaria seed contact time with 05-25-15 fertilizer (N-P2O5-K2O) on the seed’s physiological quality. The experimental design was a completely randomized design with four replicates. Treatments were arranged in a 5x4 factorial, being: five seeds contact times with fertilizer (0, 24, 48, 72 and 96 hours); four forages: Marandu palisadegrass, Piatã palisadegrass, Xaraés palisadegrass and Ruziziensis grass. The performed tests were: water content, germination (first count and germination percentage), tetrazolium (viability), electrical conductivity, accelerated aging, sand emergency and emergence speed index. Contact time of 05-25-15 fertilizer with Brachiaria seeds reduces linearly: Germination, emergence and emergence speed index of Brachiaria seeds; Piatã and Xaraés palisadegrass seeds viability; vigor (electrical conductivity), except in Ruziziensis grass seeds; and seeds germination of Piatã palisadegrass submitted to accelerated aging test (vigor). Piatã palisadegrass is the least recommended, among the analyzed grasses, for intercropping in simultaneous sowing.

scholarly journals Accelerated aging test in niger seeds

2015 ◽  
Vol 37 (3) ◽  
pp. 234-240 ◽  
Author(s):  
Carla Regina Baptista Gordin ◽  
Silvana de Paula Quintão Scalon ◽  
Tathiana Elisa Masetto
Keyword(s):  
Seedling Emergence ◽  
Accelerated Aging ◽  
Biodiesel Production ◽  
Germination Test ◽  
Decay Period ◽  
Content Variation ◽  
Randomized Design ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Completely Randomized Design

Abstract:Niger is a promising oilseed species for biodiesel production but there is no much information about the physiological potential of its seeds. Thus, the aim was to adapt the methodologies of accelerated aging test on six lots of niger seeds. The test was carried out by traditional and with saturated salt solution (20 and 40 g NaCl.100 mL-1) methods at 41 and 45 °C for 24, 48, 72 and 96 hours. After the decay period, the seeds were submitted to the germination test, proceeding to an evaluation on the seventh day after sowing, counting the normal seedlings percentage. A completely randomized design with four replications of 50 seeds was used and the means were compared by Tukey's test. The accelerated aging test was correlated with seedling emergence and provided lots classification in at least two levels of vigor. For the accelerated aging test, the method with 20 g NaCl.100 mL-1 at 41 °C for 24 hours is recommend. The traditional method is not suitable because it provides water content variation between samples above what is tolerable.

scholarly journals Physiological quality of popcorn seeds assessed by the accelerated aging test

2018 ◽  
Vol 40 (4) ◽  
pp. 428-434 ◽  
Author(s):  
Cristiane da Silva Rocha ◽  
Hugo César Rodrigues Moreira Catão ◽  
Franciele Caixeta ◽  
Heloisa Karoline Kavan ◽  
Talis Melo Claudino ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Moisture Content ◽  
Accelerated Aging ◽  
Seed Moisture Content ◽  
Randomized Design ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Physiological Quality ◽  
Consistent Information

Abstract: Despite the insufficient internal supply of popcorn kernel cultivars, the Brazilian production is continuously increasing. Therefore, searching for tests that offer fast results and reliable information on the physiological potential of the seeds is very important. The objective of this study was to assess the efficiency of the accelerated aging test, by using different times and exposure temperatures, for the evaluation of the physiological quality of popcorn seed lots. Popcorn seeds from three lots of the hybrid AP 8203 were used. For the initial characterization of the lots, the following tests were conducted: seed moisture content, first and final germination count, and field emergence. The accelerated aging test was performed in a 3x4x2 factorial scheme. After aging, the seeds were tested for moisture content, germination, and electrical conductivity. The experiment was carried out in a completely randomized design. The characteristic vigor was affected during aging, as evidenced by the increase in the amount of leachate detected by the electrical conductivity test. Seed lot 3 was most vigorous in the aging test conducted for 48 h at 45 °C. The accelerated aging test at 42 ºC for 48 h provides consistent information to differentiate seed lots of popcorn.

scholarly journals Accelerated Aging for the Evaluation of the Physiological Potential of Eggplant Seeds

2018 ◽  
Vol 10 (8) ◽  
pp. 477
Author(s):  
Cristiane Deuner ◽  
D. B. Rodrigues ◽  
L. V. M. De Tunes ◽  
A. S. Almeida ◽  
A. S. Suñe ◽  
...  
Keyword(s):  
Moisture Content ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Saturated Solution ◽  
Germination Test ◽  
Randomized Design ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Completely Randomized Design ◽  
Different Levels

The use of healthy and vigorous seeds is necessary to ensure adequate plant stands, therefore, vigor tests are used to measure the physiological potential of seeds alongside with the germination test. The objective of this study was to evaluate different procedures for the estimation of the physiological potential of eggplant seeds through the accelerated aging test. Seed lots were tested for moisture content, germination, first count of germination, seedling emergence and speed of emergence index. Then, seeds were subjected to the conventional accelerated aging test, using an unsaturated NaCl solution or a NaCl saturated solution, for 24, 48 and 72 hours at 41 °C, estimating the moisture content after each period of aging. The treatments were allocated in a completely randomized design, with four treatments (seed lots) and four replicates. The use of the saturated solution of NaCl decreases the absorption of water and the rate of deterioration of eggplant seeds during the accelerated aging test, providing more uniform results. The accelerated aging test allows eggplant seed lots from cv. Napoli to be ranked at different levels of vigor and, among the procedures tested, the combinations 41 °C/48 hours and 41 °C/72 hours allowed the proper assessment of the physiological potential of seeds of this cultivar.

scholarly journals PRE-GERMINATIVE TREATMENTS IN POMEGRANATE SEEDS (Punica granatum L.):EFFECT ON PHYSIOLOGICAL QUALITY

2017 ◽  
Vol 39 (spe) ◽  
Author(s):  
JOSEANO GRACILIANO DA SILVA ◽  
KILSON PINHEIRO LOPES ◽  
JERFFESON ARAÚJO CAVALCANTE ◽  
NATALI ALMEIDA EVANGELISTA PEREIRA ◽  
ROBERTA CHAIENE ALMEIDA BARBOSA
Keyword(s):  
Accelerated Aging ◽  
Punica Granatum ◽  
Coarse Sand ◽  
Index Number ◽  
Randomized Design ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Physiological Quality ◽  
Number Of Leaves ◽  
Pomegranate Seeds

ABSTRACT This study aimed to evaluate the efficiency of different removal methods of sarcotesta and their effects on the physiological quality of the seeds. We applied the following treatments: T1 - friction in coarse sand on a sieve; T2 and T3 - immersion in sulfuric acid (98%) for 30 minutes and washing in water, with and without a vernalization for 48 hours in a refrigerator at 4 °C, respectively; T4 and T5 - natural fermentation for 72 hours, with seeds submitted and not submitted to drying in shade for seven days; and T6 - seeds with intact sarcotesta as control. The experiment was carried out in a completely randomized design. For the analysis of the viability and vigor, we used the germination test, germination on first count, germination speed index, accelerated aging, emergence test, emergence speed index, number of leaves, plant height, stem diameter, and root length. The data were submitted to analysis of variance and Tukey test. Seeds submitted to fermentation showed the highest germination and emergence values. However, it was not statistically different from the control, probably due to the sensitivity to desiccation or seed dormancy, which was shown in the accelerated aging test.

scholarly journals Accelerated aging test for quality evaluation of surfasse (Lactuca sativa L) and arugula seeds (Eruca sativa M)

2020 ◽  
Vol 14 (1) ◽  
pp. 1
Author(s):  
T. Carlos ◽  
L. L. Silva
Keyword(s):  
Lactuca Sativa ◽  
Saline Solution ◽  
Water Solution ◽  
Accelerated Aging ◽  
Exposure Period ◽  
Eruca Sativa ◽  
Lactuca Sativa L ◽  
Randomized Design ◽  
Accelerated Aging Test ◽  
Aging Test

The present work aimed to verify the efficiency of the accelerated aging test in the evaluation of the vigor of lettuce and arugula seeds. Two lots of lettuce seeds (Lactuca sativa L) and two lots of arugula seeds (Eruca sativa M) were used, submitted to germination and accelerated aging tests, using the exposure periods of 48, 72 and 96 hours, at a temperature of 42ºC, with and without the use of saturated solution and saline solution of NaCl, the experimental design used was a completely randomized design (DIC), composed of three replications in a 2x3x3 factorial scheme for the studied cultivars. The accelerated aging test is efficient to demonstrate the vigor of lettuce and arugula seeds, and the exposure period of 48 hours in saline solution for lettuce and in water solution for arugula is sufficient to check the quality.

scholarly journals Electrical conductivity for seed vigor test in sorghum (Sorghum bicolor)

2017 ◽  
Vol 1 (1) ◽  
pp. 6-12 ◽  
Author(s):  
KHODRATIEN FATONAH ◽  
IRFAN SULIANSYAH ◽  
NALWIDA ROZEN
Keyword(s):  
Electrical Conductivity ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Test Method ◽  
Water Volume ◽  
Conductivity Method ◽  
Randomized Design ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Potassium Leakage

Fatonah K, Suliansyah I, Rozen N. 2017. Electrical conductivity for seed vigor test in sorghum (Sorghum bicolor). Cell Biol Dev 1: 6-12. The objectives of this study were to obtain electrical conductivity test method for seed vigor test in sorghum, to recognize relationship between electrical conductivity test and potassium leakage, and to recognize relationship between electrical conductivity test and other variable on seed vigor. This study have two step experiments. The objective of Experiment I was to determine accurate combinations of water volume and amount seed of the electrical conductivity test for seed vigor test in sorghum. Completely Randomized Design of 15 seed lots with 3 replications were used to determine electrical conductivity method with different vigor. Experiment II were to test electrical conductivity method of 21 seed lots of sorghum without accelerated aging test and 21 seed lots of sorghum were given accelerated aging test. Completely Randomized Design of 21 seed lots with 3 replications were used in Experiment II. The variable were observed : standard germination, field emergence, speed of germination, first count, conductivity, potassium leakage and eight combination conductivity method of water volume (50, 100, 150 and 200 ml) and amount of seed sorghum (50 and 75 seed count). The result of this experiments showed that electrical conductivity test method with 150 ml water volume and 75 seed count was accurate and suitable for sorghum seed vigor test; electrical conductivity test showed positive correlation with potassium leakage;and electrical conductivity test can be used for seed vigor test in sorghum and provided the potential of physiological seed were shown through : standard germination test, field emergence test, first count test and speed of germination with negative correlation.

scholarly journals Viability of seedling image analysis (Vigor-S) to determine the physiological potential of melon seeds

2020 ◽  
Vol 42 ◽  
Author(s):  
Moadir de Sousa Leite ◽  
Salvador Barros Torres ◽  
Francisco Guilhien Gomes Junior ◽  
Carlos Henrique Queiroz Rego ◽  
Emanoela Pereira de Paiva ◽  
...  
Keyword(s):  
Image Analysis ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Nacl Solution ◽  
Randomized Design ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Analysis System ◽  
Melon Seeds

Abstract: Melon is a vegetable crop of food and nutritional importance whose cultivation is growing worldwide. In this sense, investments in technologies are necessary, especially regarding the quality of seeds used in the establishment of new areas. This study aimed to verify the effectiveness of the Automated Seed Vigor Analysis System (Vigor-S) in the evaluation of the physiological potential of melon seeds. Eight seed lots (four lots of the hybrid Supreme and four of the hybrid Premier) were used. The physiological potential of the seeds was evaluated through tests indicated for analyzing the quality of melon seeds associated with the image analysis by using the software Vigor-S, which included the analysis of seedlings from the germination test and accelerated aging in saturated NaCl solution. The experiment was conducted in a completely randomized design, with five replications. The results indicated the effectiveness of Vigor-S, especially when it was used associated with the accelerated aging test in saturated NaCl solution, with results similar to those obtained in traditional vigor tests. Thus, the Automated Seed Vigor Analysis System (Vigor-S) was effective in evaluating the physiological potential of melon seeds.

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