QUALITY ASSESSMENT OF STORED WHEAT DURING DRYING WITH NEAR-AMBIENT TEMPERATURE AIR

1985 ◽  
Vol 65 (4) ◽  
pp. 849-866 ◽  
Author(s):  
R. N. SINHA ◽  
W. E. MUIR ◽  
D. B. SANDERSON
Keyword(s):  
Seed Germination ◽  
Moisture Content ◽  
Ambient Temperature ◽  
Quality Assessment ◽  
Biological Agents ◽  
Quality Loss ◽  
Stored Wheat ◽  
Aspergillus Glaucus ◽  
Aspergillus Candidus

Quality loss of wheat at 19% moisture content, stored in six 1-m3 bins with three levels of ventilation, was determined during 286 days of storage in the autumn, winter and spring of 1983–1984 in Manitoba. The variables measured included: moisture content, temperature, CO2-O2 composition of intergranular air, seed germination, microflora and fat acidity. In the two high-airflow bins, 12.2 (L/sec)/m3, no spoilage occurred because the grain was dried to 13% moisture content in 28 days. In the two low-airflow bins, 0.8 (L/sec)/m3, some spoilage occurred after 30 days. In the two control bins, 0 (L/sec)/m3, grain began to spoil within 10 days. Fungi of the Aspergillus glaucus group and Aspergillus candidus appeared to be the main biological agents responsible for spoilage.Key words: Ventilation, Aspergillus, fat acidity, moisture, CO2

RAPID DETERMINATION OF SEED GERMINATION POTENTIAL TO MEASURE QUALITY LOSS IN STORED WHEAT

1982 ◽  
Vol 62 (4) ◽  
pp. 1045-1048 ◽  
Author(s):  
N. D. G. WHITE ◽  
R. N. SINHA ◽  
W. E. MUIR
Keyword(s):  
Seed Germination ◽  
Moisture Content ◽  
Rapid Method ◽  
Rapid Determination ◽  
Quality Loss ◽  
Wheat Seed ◽  
Stored Wheat ◽  
Germination Potential

A rapid method of determining wheat seed germination after 1 day (G1) of incubation was found. Germination of wheat seed stored at [Formula: see text] moisture content is estimated by adding 12% to G1; at <17% moisture content germination is not consistently predicted by G1.

CATFISH DRYING (Clarias Batraclus) USING ‘TEKO BERSAYAP’ SOLAR DRYER

2012 ◽  
Vol 2 (1) ◽  
pp. 14-20
Author(s):  
Yuwana Yuwana
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
Ambient Temperature ◽  
Drying Rate ◽  
Drying Process ◽  
Drying Time ◽  
Ambient Relative Humidity ◽  
Solar Dryer

Experiment on catfish drying employing ‘Teko Bersayap’ solar dryer was conducted. The result of the experiment indicated that the dryer was able to increase ambient temperature up to 44% and decrease ambient relative humidity up to 103%. Fish drying process followed equations : KAu = 74,94 e-0,03t for unsplitted fish and KAb = 79,25 e-0,09t for splitted fish, where KAu = moisture content of unsplitted fish (%), KAb = moisture content of splitted fish (%), t = drying time. Drying of unsplitted fish finished in 43.995 hours while drying of split fish completed in 15.29 hours. Splitting the fish increased 2,877 times drying rate.

Seed Storage and Germination Performance in Knema attenuata - an Endemic Medicinal Tree of Western Ghats, India

2021 ◽  
Vol 27 (3) ◽  
pp. 162-166
Author(s):  
Abdul Azeez Hussain ◽  
◽  
Ramachandra Kurup Rajvikraman ◽  
Keyword(s):  
Seed Germination ◽  
Relative Humidity ◽  
Moisture Content ◽  
Seed Bank ◽  
Tree Species ◽  
Western Ghats ◽  
Climatic Condition ◽  
Seed Storage ◽  
Medicinal Tree

Detailed study on seed storage and germination trailed in Knema attenuata (Wall. ex Hook. f. & Thomson) Warb.– the IUCN Red Listed ‘least concern’ medicinal tree species revealed that seeds were of recalcitrant nature. Viability of the seeds could be maintained for a longer period of up to 6 months with 47% Moisture content (mc) when kept in closed polycarbonate bottles at seed bank condition [20±20C Temp. and 40% Relative Humidity (RH)]. The 55% seed germination under normal climatic condition could be enhanced to a much higher percentage (75±5) inside the mist house chamber (34±30C Temp. and 70-80% RH).

scholarly journals Cryopreservation of primed tobacco seeds

2018 ◽  
Vol 40 (4) ◽  
pp. 415-421
Author(s):  
Camila Aparecida Lopes ◽  
Maria Laene Moreira de Carvalho ◽  
Ana Cristina de Souza ◽  
João Almir Oliveira ◽  
Dayliane Bernardes de Andrade
Keyword(s):  
Seed Germination ◽  
Ambient Temperature ◽  
Silica Gel ◽  
Saline Solution ◽  
Seed Priming ◽  
Potassium Nitrate ◽  
Water Bath ◽  
Tobacco Seeds ◽  
Physiological Quality

Abstract: Priming is a commercial technique used to increase the speed and uniformity of seed germination. However, the physiological quality of primed seeds is usually negatively affected during storage. Tobacco seeds of the cultivar BAT 2101 were used to investigate whether primed seeds could be cryopreserved. The most suitable substances, type of drying, and reheating during priming and cryopreservation of tobacco seeds were studied. Seed priming was performed with water, spermidine, and potassium nitrate, and drying was carried out with silica gel and a saturated saline solution. Seeds were cryopreserved in liquid nitrogen for 24 h and reheated in a water bath for two and five minutes and at ambient temperature. Tobacco seeds primed with spermidine and water can be cryopreserved without loss of physiological quality when quickly dried on silica gel and reheated in a water bath for two minutes.

Seed storage behaviour and seed germination in African and Malagasy baobabs (Adansonia species)

2006 ◽  
Vol 16 (1) ◽  
pp. 83-88 ◽  
Author(s):  
Juvet Razanameharizaka ◽  
Michel Grouzis ◽  
Didier Ravelomanana ◽  
Pascal Danthu
Keyword(s):  
Seed Germination ◽  
Moisture Content ◽  
Seed Storage ◽  
The Other ◽  
Arid Zones ◽  
Physical Dormancy ◽  
Interspecific Differences ◽  
Wet Forests

The Adansonia (baobab) genus comprises seven species in Africa, six of which are endemic to Madagascar. Depending on the species, baobabs develop in widely varying ecosystems, including arid zones and savannahs, as well as dry and wet forests. Seeds from all species exhibited orthodox behaviour, tolerating dehydration to a moisture content of around 5%. There was no physical dormancy in the two species belonging to the Brevitubae section, A. grandidieri and A. suarezensis. Their seeds germinated without any prior scarification. The five other species, belonging to Adansonia and Longitubae section, have seeds with water-impermeable coats. In the case of A. digitata and A. za, the proportion of water-impermeable seeds was around two-thirds, whereas with A. rubrostipa, A. madagascariensis and A. perrieri, the proportion was >90%. Treatments allowing for the removal of physical dormancy needed to be markedly more severe with A. madagascariensis than with the other species. None the less, it seems impossible to link these characteristics and the interspecific differences to a strategy for adaptation by these species to their environment.

Citrus Plant and Process Ventilation

1998 ◽  
Author(s):  
Peter K. Ousley
Keyword(s):  
Moisture Content ◽  
Ambient Temperature ◽  
Heat Load ◽  
Manufacturing Plant ◽  
Citrus Plant ◽  
Plant Operations

Plant Ventilation, by definition, is the change of air within a manufacturing plant utilizing unducted ventilators. It is accomplished by bringing outside air in and exhausting it back outdoors. The degree of air change is based on how many exchanges of air per minute are required to provide an ambient temperature within the plant close to or equal to outside shade conditions. Air changes, within citrus plant operations, will vary in requirement depending on heat load, moisture content, number of workers and the degree of hazardous or noxious fumes. The following outlines various air changes often required in different areas of citrus plant operations. Paper published with permission.

scholarly journals Germination of Psidium friedrichsthalianum (O. Berg) Nied. seeds under different temperature and storage conditions

2018 ◽  
Vol 40 (3) ◽  
pp. 246-252 ◽  
Author(s):  
Daniel Felipe de Oliveira Gentil ◽  
Sidney Alberto do Nascimento Ferreira ◽  
Elizabeth Rodrigues Rebouças
Keyword(s):  
Seed Germination ◽  
Moisture Content ◽  
Storage Conditions ◽  
Germination Speed ◽  
Meloidogyne Spp ◽  
And Storage

Abstract: Psidium friedrichsthalianum is a species whose fruit can be used to make juices, jellies/jams and sweets, and its seedlings serve as rootstocks with resistance to Meloidogyne spp. The aim of this study was to evaluate the performance of seeds of this species at different germination temperatures, and to verify the effects of different moisture levels on their storage in two experiments. In the first, six germination temperatures (15, 20, 25, 30, 35, and 40 ºC) were evaluated, and in the second, seeds with different moisture levels (15.4, 9.8, 9.0, 8.4, and 8.2%) were stored in sealed containers at 20 °C for 0, 1, 3, 6, 9, and 12 months. Seed germination was favored by temperatures of 20 ºC and 25 ºC, reaching 93% and 87%, respectively, along with the highest germination speed indexes (2.582% day1 and 2.568% day-1) and shortest germination times (37.9 and 36.9 days). Temperatures of 30 °C and 35 °C maintained the seeds quiescent, while 40 °C was lethal. In storage, the seeds tolerated desiccation to 8.2% moisture content and could be stored in sealed containers at 20 ºC for 12 months, with germination higher than 70%.

Effects of osmotic priming on dormancy and storability of tomato (Lycopersicon esculentumMill.) seeds

1996 ◽  
Vol 6 (2) ◽  
pp. 49-55 ◽  
Author(s):  
Yongqing Liu ◽  
R. J. Bino ◽  
W. J. van der Burg ◽  
S. P. C. Groot ◽  
H. W. M. Hilhorst
Keyword(s):  
Seed Germination ◽  
Lycopersicon Esculentum ◽  
Ambient Temperature ◽  
Untreated Control ◽  
Seed Priming ◽  
Positive Effects ◽  
Germination Process ◽  
Controlled Deterioration ◽  
Physical Changes ◽  
Seed Storability

AbstractFreshly harvested tomato (Lycopersicon esculentumMill, cv. Moneymaker) seeds were osmotically primed for 8 d in −1.0 MPa PEG-6000 solution and dried to about 6% water content for storage. Such so–called ‘fresh PEG priming’ enhanced seed germination and improved seedling performance as compared with the untreated control. Fresh PEG priming neither alleviated seed dormancy nor promoted DNA replication as was the case when seeds were dried upon harvest and subsequently primed in PEG (normal PEG priming). However, the addition of 10 μM GA4+7to the osmotic priming solution triggered replicative DNA synthesis of fresh-priming seeds and further enhanced the germination process. After 5 months of storage in ambient temperature conditions, fresh PEG-primed seeds maintained more positive effects gained from priming, whereas, normal PEG-primed seeds had lost the promoting effects on germination. Normal PEG-primed seeds were much more susceptible to controlled deterioration than fresh PEG-primed seeds. It is suggested that the advancement of germination is negatively correlated with seed storability. The mechanisms of seed priming in relation to nuclear replication activities and physical changes are discussed.

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