scholarly journals Evaluation of a seed storage facility in relation to preserving seed moisture, vigour and germination

2021 ◽  
Vol 21 (07) ◽  
pp. 18368-18390
Author(s):  
Sipho Sibanda ◽  
◽  
S Mdlalose ◽  
T Workneh ◽  
M Laing ◽  
...  
Keyword(s):  
Moisture Content ◽  
Solar Collector ◽  
Germination Rate ◽  
Seed Storage ◽  
Ambient Air ◽  
Storage Facility ◽  
Control Room ◽  
Seed Vigour ◽  
Storage Room ◽  
Seed Moisture

The performance of a solar energy-assisted seed storage room was evaluated through an ordinary 22-m3 room that was retrofitted with a solar collector, inlets and chimney. The structure was made of a solar collector to heat the ambient air before entering the chimney. The chimney circulated the air inside the structure and inlets. To compare the performance of the modified storage room, a room with a similar capacity and without the retrofitted components (control storage room) was used. Twelve 8 kg bags of maize were stored in each storage room for a period of three months. Samples were taken every two weeks to determine germination rate, moisture content and seed vigour. The temperature and relative humidity (RH) was measured during storage. The RH in the control storage was significantly higher (P≤0.05) (60.6 ± 5.87%) than in the modified storage (40.1 ± 3.21%) during the day. However, at night, the RH in the control storage room was significantly lower (P≤0.05) (58.5 ± 7.32%) than in the modified storage (63.7 ± 6.28%). The RH in the modified storage room increased from 40.1% during the day to 63.7% at night. The RH in the control storage room decreased slightly from 60.6% to 58.5% during the day and night. The seed moisture content in the modified storage facility was significantly lower (P≤0.05) (12.6 ± 0.21%) than in the control storage room (13.3 ± 0.52%). The moisture content in the modified storage room decreased from 12.6% to 12.4%, whereas in the control room, moisture content increased from 12.6% to 13.8% in three months. The seed germination rate obtained after three months of storage in the modified storage room was significantly higher (P≤0.05) (98.5 ± 0.85%) than in the control storage room (96.8 ± 1.49%).The seed vigour obtained in the modified storage room was significantly higher (93.6 ± 0.35%) than in the control room (91.7 ± 2.08%) (P≤0.05). Seed stored in the control storage lost vigour at a faster rate, compared to the seeds stored in the modified storage room. Therefore, the modified naturally-ventilated seed storage room maintained seed quality better than the control storage room.

Durum wheat (Triticum durum Desf.) seed storage under controlled conditions

2020 ◽  
pp. 105-115
Author(s):  
O.A. Zadorozhna ◽  
T. P. Shyianova ◽  
M.Yu. Skorokhodov
Keyword(s):  
Seed Germination ◽  
Moisture Content ◽  
Durum Wheat ◽  
Germination Rate ◽  
Seed Storage ◽  
Seed Longevity ◽  
Forest Steppe ◽  
Controlled Conditions ◽  
Seed Moisture ◽  
Wheat Seeds

Aim. The aim of this work was to determine the longevity of durum wheat seeds according to the results of seed germination monitoring after seed storage for up to 19 years under controlled conditions in the National Plant Gene Bank of Ukraine. Results and Discussion. 36 accessions of spring durum wheat were investigated. These accessions belonged to var. hordeiforme, var. leucurum, var. melanopus, var. alexandrinum, var. apulicum, var. australe from seven countries; seven samples of durum winter wheat belonged to var. hordeiforme, var. leucurum were from Ukraine. Accessions were received by the Ukrainian genebank from seven countries: Ukraine, Russia, Mexico, France, Portugal, Kazakhstan and Tunisia. Seed accessions for storage were grown mainly in the eastern forest-steppe of Ukraine, stored in the National depositary in this region at unregulated temperature and at 4°C with seed moisture content of 5.5-8.0%. The mode of seed drying, which took place at temperature not higher than 25°C is discussed. The obtained results indicate high seed longevity of durum wheat under these conditions with initial seed germination rate more than 90% even in a storage facility at unregulated temperature. There were no differences in seed longevity between varieties of durum wheat under the studied storage conditions. Conclusions. Seeds of durum wheat remain unchanged for at least 10 years with a high initial germination of seeds, storage in sealed containers with moisture content 5.5-8.0% even at unregulated temperature of the eastern forest-steppe of Ukraine. Durum wheat seeds should be storage at temperature 4°C to increase seed longevity at seed moisture 5.5-8.0%.

scholarly journals Temperature and Relative Humidity Govern Germination and Storage of Gladiolus Seed

HortScience ◽  
1991 ◽  
Vol 26 (8) ◽  
pp. 1054-1057 ◽  
Author(s):  
W.J. Carpenter ◽  
G.J. Wilfret ◽  
J.A. Cornell
Keyword(s):  
Relative Humidity ◽  
Seed Treatment ◽  
No Reduction ◽  
Germination Rate ◽  
Seed Viability ◽  
Seed Storage ◽  
Moisture Contents ◽  
Seed Moisture ◽  
Germination Temperature ◽  
And Storage

Gladiolus (G. grandiflorus) seed germination was light-independent, but temperature influenced the germination rate. Constant 20C promoted higher total germination (97%), fewer days (4.3) to 50% of final germination, and shorter span of days (4.8) between 10% and 90% germination than other constant temperatures, although similar results were achieved by alternating 12-h cycles of 20 to 25C. Total germination was unchanged after seed treatment for 7 days at 10 to -20C, but longer germination periods were required after treatments below -10C. Reducing seed moisture contents from 11.8% to 4.2% caused no reduction in total germination, but moisture contents below 6.6% delayed achieving 50% of final germination and extended the periods from 10% to 90% of germination. Temperature and relative humidity (RH) during storage were important in retaining seed viability, with RH having a larger effect. Smallest declines in total germination during 12 months of storage occurred at 11% and 33% RH at 15C. The statistical analysis estimated the optimum seed storage at 14C and 26% RH.

scholarly journals Effect of Scarification, Seed Storage Temperature, and Relative Humidity on Lupinus havardii Wats. and Lupinus texensis Hook. Seed Germination

HortScience ◽  
2005 ◽  
Vol 40 (3) ◽  
pp. 782-785 ◽  
Author(s):  
Wayne A. Mackay
Keyword(s):  
Relative Humidity ◽  
Storage Temperature ◽  
Germination Rate ◽  
Seed Storage ◽  
Significant Decline ◽  
Rapid Decline ◽  
Seed Moisture Content ◽  
C Storage ◽  
Seed Moisture ◽  
Seed Scarification

Seeds of Lupinus havardii Wats. and L. texensis Hook. were subjected to scarification, storage temperature (4 or 22 °C), and relative humidity (RH) treatments (11%, 23%, 52%, 75%, or 97% RH) for 12 months. Seed moisture increased as relative humidity increased with scarified seed having the greatest increase in seed moisture content regardless of storage temperature. For both species, the combination of seed scarification before storage, 75% RH, and 22 °C storage temperature resulted in a significant and rapid decline in germinability beginning at 4 months. Scarified L. texensis seed stored at 52% RH and 22 °C also exhibited a significant decline in germinability following 6 months storage. Seed of both species stored under all other conditions germinated similar to or higher than the initial germination rate after 12 months. These results clearly show that scarification can be performed before seed packaging as long as the seed packets are stored at ≤23% RH under 4 or 22 °C with no loss in germinability for at least 1 year.

scholarly journals Design, Building and Performance Evaluation of a Mixed-Mode Solar Dryer for Agricultural Products

2020 ◽  
Vol 15 ◽  
Keyword(s):  
Performance Evaluation ◽  
Relative Humidity ◽  
Moisture Content ◽  
Ambient Temperature ◽  
Solar Collector ◽  
Mixed Mode ◽  
Ambient Air ◽  
Agricultural Products ◽  
The Third ◽  
And Performance

This research work presents the detailed explanation of the design, construction and performance evaluation of mixed-mode solar agricultural products dryer. The experimental set up used for testing the performance of the mixed-mode solar agricultural products dryer and determining the influence of various drying methods on the drying behaviour of agricultural products. Evaluation of the dryer was centered on the moisture content reduction, temperatures and relative humidities variations. 1680 g of freshly potato slides were used for evaluation. The test results gave that the temperatures inside the dryer cabinet and the solar collector were much higher than the ambient temperature during most hours of the daylight. The temperature inside the solar collector was up to 27 o C approximately higher than the ambient temperature. The temperature inside the drying cabinet was up to 22 o C approximately higher than the ambient temperature for about three hours immediately after 12.00 h (noon). The relative humidity in the solar collector and drying cabinet were lower than the ambient air relative humidity, with the ambient air recording the highest relative humidity at each reading followed by the drying cabinet and finally by the solar collector. Because of the decreased relative humidity inside the dryer, all the time, the temperature inside the dryer was high which is sufficient enough to dry the potato at an early time. Based on the results obtained during the test, temperature above 65 o C was recorded inside the drying cabinet. This high temperature in the drying cabinet causes 419 g of moisture to be removed on the first day, 257 g on the second day, 191 g on the third day, 136 g on the fourth day and finally 108 g on the fifth day. At the end of the five days of drying process, the mass of 1680 g of potato was reduced to 569 g. Total amount of moisture removed was 1111 g and total moisture loss was 66.1 %, which is the required amount of moisture to be removed for safe drying of freshly potato slides. The moisture content of the freshly potato slides was 24.9 % at the end of drying for the first day at about 5:00 pm, 20.4 % at the end of drying for the second day, 19 % at the end of drying for the third day, 16.7 % at the end of drying for the fourth day and finally 15.9% at the end of drying for the fifth day. It was observed that the drying rate increased from the end of one day to another, which shows the earlier and faster removal of moisture from the dried item.

scholarly journals Effect of different storage conditions and seed treatments on seed viability in soybean [Glycine max (L.) Merr.]

2017 ◽  
Vol 9 (1) ◽  
pp. 245-252
Author(s):  
J. B. Patel ◽  
Jyoti Sondarva ◽  
C. A. Babariya ◽  
R. R. Rathod ◽  
V. J. Bhatiya
Keyword(s):  
Moisture Content ◽  
Cold Storage ◽  
Storage Conditions ◽  
Germination Percentage ◽  
Seed Treatments ◽  
Seed Moisture Content ◽  
Seed Vigour ◽  
Seed Moisture ◽  
Vigour Index ◽  
Leaf Powder

The present investigation was carried out in laboratory of the Department of Seed Science and Technolo-gy, College of Agriculture, Junagadh Agricultural University, Junagadh from the April 2013 to April 2015, wherein two kg of freshly harvested quality seed of soybean cv. Gujarat Junagadh Soybean 3 having high germination percentage and low moisture content (below 8%) was taken for each repetition and for each combination of treat-ments. The treatment consisted of two storage conditions (C) viz., C1 (Ambient temperature) and C2 (Cold storage at 7oC + 2oC), and five seed treatments (S) viz., S1 = Control, S2 = Carbendazim @ 2g/kg seed, S3 = Mancozeb @ 2g/ kg seed, S4 = Neem leaf powder @ 10g/kg seed, and S5 = Neem Oil @ 5 ml/kg seed. The experiment was carried out using Completely Randomized Design (Factorial) repeated three times. After proper mixing or smearing the seeds as per the treatments, seeds were packed in cloth bag and kept in laboratory under two different storage conditions. Observations were recorded at 90 days interval on germination (%), root length (cm), shoot length (cm), seedling dry weight (g), seed vigour index I, seed vigour index II and seed moisture content (%). The results revealed that storage condition (C) and seed treatments (S) exhibited significant differences almost for the all the traits for germination and seedling parameters after 2 years of storage. The results of soybean seed stored in two different storage conditions showed that on an average, the seed stored under cold storage (70C + 20C) noted higher values for all the traits studied except seed moisture content after 2 years of storage. Among the seed treatments, on an average, after 2 years of seed storage, significantly (P<0.05) higher values were recorded by all the seed treatments over the control. However, seed treated with Mancozeb @ 2g/kg of seed recorded the significantly highest germination percentage (71.50 %) and it was at par with Neem leaf powder @ 10 g / kg seed (70.67%) and Carbendazim @ 2g /kg seed (69.67%) after 2 years of storage. The germination percentage noted in control treatment was 33.17 per cent after 2 years of storage. An ISTA standard for germination in soybean is 70 per cent. Most of the interactions effects were found significant (P<0.05) for all the traits studied.

scholarly journals Model Dinamik Vigor Daya Simpan Benih Kedelai pada Penyimpanan Terbuka

2016 ◽  
Vol 34 (3) ◽  
pp. 219
Author(s):  
Ari Wahyuni ◽  
M. R. Suhartanto ◽  
Abdul Qadir
Keyword(s):  
Moisture Content ◽  
Initial Moisture Content ◽  
Seed Viability ◽  
Soybean Seed ◽  
Storage Period ◽  
Seed Storage ◽  
Seed Moisture Content ◽  
Seed Moisture ◽  
Input Model ◽  
Seed Storability

<p>Soybean seed viability declines during seed storage. Soybean seed deteriorates rapidly, affected by its high protein content and often high humidity in the tropical environment. This research was aimed to develop dynamic model of soybean seed viability in an open storage. The study was conducted in three stages, namely: 1) desk study, 2) seed storage experiment, 3) development of seed storage model, simulation and verification of the model. The second stage of the experiment consisted of soybean seed storing and germination testing using completely randomized design. Treatments were three initial moisture content (7-8%, 9-10% and 11-12%) and four varieties of soybean (Anjasmoro, Wilis, Detam-1 and Detam-2). The results showed that the seed behaviour during storage period were affected by initial seed moisture content, initial viability, varieties and environmental condition. Therefore, seed moisture content, initial viability and varieties may be used as input model. Moisture content, integreting seed respiration, electric conductivity and seed storability vigor (VDSDB) were as model output. Simulation of Seed Storability Vigor Prediction Model with Model Construction Layer-Stella (MCLS) using relative humidity (RH), temperature, seed permeability, initial moisture content and initial viability as input model could logically predict the seed moisture content and seed storability vigor (VDSDB).</p>

scholarly journals Evaluation of Temperature and Moisture Content during Storage on the Germination of Flowering Annual Seed

HortScience ◽  
1995 ◽  
Vol 30 (5) ◽  
pp. 1003-1006 ◽  
Author(s):  
William J. Carpenter ◽  
Eric R. Ostmark ◽  
John A. Cornell
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
Seed Storage ◽  
Seed Moisture Content ◽  
Moisture Contents ◽  
Seed Moisture ◽  
Storage Temperatures

Various combinations of temperature and moisture contents were used in evaluating the seed storage of nine genera of annual flowers. Relative humidity (RH) levels of 11%, 32%, 52%, and 75% provided wide ranges in seed moisture during storage at 5, 15, and 25C. At each temperature, total germination percentages (G) generally declined as seed moisture content increased during storage. The seed moisture range giving the highest G after 12 months of storage was determined for each temperature and plant genus. For all genera, seed moisture contents during storage increased as storage temperatures increased at constant RH levels. Moisture contents at 25C storage were 37%, 34%, 29%, and 20% higher than at 5C when RH levels were at 11%, 32%, 52%, and 75%, respectively.

Moisture level effect on seed longevity of wheat species representatives

2019 ◽  
pp. 121-128
Author(s):  
M.Yu. Skorokhodov ◽  
R.L. Boguslavskyi ◽  
V.S. Lyutenko
Keyword(s):  
Seed Germination ◽  
Moisture Content ◽  
Germination Rate ◽  
Accelerated Aging ◽  
Seed Longevity ◽  
High Plasticity ◽  
Wheat Species ◽  
Seed Moisture Content ◽  
Germination Energy ◽  
Seed Moisture

Аim. To determine the optimum moisture content and comparative longevity of seeds of wheat species accessions for long-term storage according to the results of the “accelerated seed aging” experiment. Results and Discussion. There was estimated seed longevity of the representatives of wheat species Triticum aestivum L., T. spelta L., T. durum Desf., T. dicoccum (Schrank) Schuebl., T. monococcum L., T. sinskajae A. Filat. et Kurk. of three reproduction years – 2014, 2016 and 2017, at three moisture levels – 5 %, 6 % and 7 % in the experiment with accelerated aging. Germination energy and germination rate depended on the year conditions, seed moisture, the interactions year – genotype, year – seed moisture and all three factors: year conditions, seed moisture, genotype (influence power from 16.1 to 20.1). Accelerated aging caused decrease in seed germination energy and germination rate in almost all samples at all three moisture levels. Under the accelerated aging, with an increase in seed moisture content from 5 % to 7 %, on average by the accessions, the seed germination energy (from 83 % to 63 %) and germination rate (from 90 % to 68 %) decreased on samples. At all three moisture levels, relatively high germination energy and germination rate after accelerated aging had T.monococcum (86-95 % and 88-97 %) and Polba 3 (74-96 % and 85-98 %). A low germination energy (66-69 % и 68-77 %) and germination rate showed T.sinskajae UA0300224 (66-69 %) and T.durum Spadschyna (56-75 % и 61-92 %). At all three seed moisture levels, the high plasticity of germination energy had T.sinskajae UA0300224 and T.durum Spadschina, germination rate – T.sinskajae. With all three seed moisture levels, T.sinskajae UA0300224 and T.aestivum Harkivska 26 were characterized by stable germination rate. Conclusions. The highest seed longevity of the studied accessions is provided by moisture of 5%, less but close longevity – the moisture of 6%. The least longevity in three test options had seeds with 7 % moisture content. Among studied accessions of wheat species most longevous seeds had T.monococcum UA0300439 and Polba 3. The seeds of T.sinskajae UA0300224 and T.astivum PI619379 were less longevous.

CHROMOSOME DAMAGE INDUCED BY ARTIFICIAL SEED AGING IN BARLEY. I. GERMINABILITY AND FREQUENCY OF ABERRANT ANAPHASES AT FIRST MITOSIS

1981 ◽  
Vol 23 (2) ◽  
pp. 267-280 ◽  
Author(s):  
Minoru Murata ◽  
Eric E. Roos ◽  
Takumi Tsuchiya
Keyword(s):  
Moisture Content ◽  
Seed Storage ◽  
Germination Percentage ◽  
Mitotic Division ◽  
Root Tips ◽  
Hordeum Vulgare L ◽  
Seed Moisture Content ◽  
Seed Aging ◽  
Seed Moisture ◽  
Higher Temperature

In order to study the genetic changes which occur during seed storage, barley (Hordeum vulgare L. 'Himalaya') seeds were subjected to artificial aging using six combinations of temperature (21 °C, 32 °C, and 38 °C) and seed moisture content (12% and 18%). With increasing time in storage, germination of the seeds was delayed and reduced. Abnormal seedlings without roots also occurred with increased storage. Higher temperature and seed moisture content induced rapid loss of germinability. At the first mitotic division in the root tips, the frequency of aberrant anaphases and of roots with aberrations increased with increased storage time. The frequencies of aberrant anaphases and of roots with aberrations were also increased by higher temperature and seed moisture content. Frequencies of aberrant anaphases and of roots with aberrations were negatively correlated with germination percentage. This indicated that the frequency of chromosomal aberrations induced by seed aging might be estimated from the germination percentages.

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