The Relationship Among Storage Condition and Seed Moisture Content Revisited

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 490c-490
Author(s):  
Jian Fang ◽  
Frank Moore ◽  
Eric E. Roos ◽  
Christina Walters
Keyword(s):  
Moisture Content ◽  
Storage Temperature ◽  
Selection Criterion ◽  
Seed Storage ◽  
Storage Condition ◽  
Third Order ◽  
Seed Moisture Content ◽  
Seed Moisture ◽  
Orthodox Seeds ◽  
The Relationship

Seed moisture content (MC) changes depending upon relative humidity (RH) and temperature (T). This relationship was revealed by studying the interaction of RH and T at equilibrium. Maize, cucumber, onion, lettuce, watermelon, and pea seeds were equilibrated over various saturated salt solutions (1% to 93% RH) at temperatures from 5 to 50 °C. Five-hundred-eleven subset models were selected from a complete third-order model MC = 0 + 1*RH + 2*T + 3*RH2 + 4*T2 + 5*RH*T + 6*RH3 + 7*T3 + 8*RH*T2 + 9*RH2*T using Mallows' minimum Cp as the selection criterion. All six best subset models were found to have the same functional form, MC0 + 1 = *RH + 2*T + *RH2 + 5*RH*T + 6*RH + 9*RH2*T. Coefficients had essentially the same respective values among species, except for the onion and pea models (P ≤ 0.05). All models indicated that seed MC increased as RH increased and decreased as temperature increased. A previous paper (Vertucci and Roos, 1990) indicated that optimum RH for orthodox seed storage is between 19% and 27%. Using these models, the range for the optimum moisture content for storage of most orthodox seeds can be quickly calculated for any given storage temperature.

scholarly journals Three-dimensional Models Represent Seed Moisture Content as a Function of Relative Humidity and Temperature

HortScience ◽  
1998 ◽  
Vol 33 (7) ◽  
pp. 1207-1209 ◽  
Author(s):  
Jian Fang ◽  
Frank Moore ◽  
Eric Roos ◽  
Christina Walters
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
Citrullus Lanatus ◽  
Three Dimensional ◽  
Selection Criterion ◽  
Seed Storage ◽  
Response Surfaces ◽  
Seed Moisture Content ◽  
Seed Moisture ◽  
Three Dimensional Models

Seed moisture content (MC) has been considered the most important factor controlling physiological reactions in seeds, and MC changes with relative humidity (RH) and temperature (T). This relationship is revealed by studying the interaction of RH and T at equilibrium. Cucumber (Cucumis sativus L.), lettuce (Lactuca sativa L.), maize (Zea mays L.), onion (Allium cepa L.), pea (Pisum sativum L.), and watermelon (Citrullus lanatus M. & N.) seeds were equilibrated over sulfuric acid (1% RH) and various saturated salt solutions (5.5% to 93% RH) at temperatures from 5 to 50 °C. Best-fit subset models were selected from the complete third-order model MC = β0 + β1*RH + β2*T + β3*RH2 + β4*T2 + β5*RH*T + β6*RH3 + β7*T3 + β8*RH*T2 + β9*RH2*T, using Mallows' minimum Cp as the selection criterion. All six best subset models (R2, 0.98 to 0.99) had the same functional form, MC = β0 + β1*RH + β2*T + β3*RH2 + β5*RH*T + β6*RH3 + β9*RH2*T. Coefficients had essentially the same respective values among all species except onion and pea, for which some coefficients were statistically different from those of the other species (P ≤ 0.05). All models indicated that seed MC increased as RH increased and decreased as T increased; but RH had the greater influence. The inverse relationship between seed MC and T, although slight, was evident in the response surfaces. The interaction effect of RH and T on MC was significant at P ≤0.001. These results suggest that orthodox seed species respond similarly to T and RH. This in turn suggests that a common model could be developed and used for optimizing seed storage environments.

scholarly journals Effect of Desiccation and Storage Environment on Longevity of Ehretia Cymosa Thonn. Seeds.

2020 ◽  
Author(s):  
Peter Murithi Angaine ◽  
Stephen Muriithi Ndungú ◽  
Alice Adongo Onyango ◽  
Jesse Omondi Owino
Keyword(s):  
Moisture Content ◽  
Storage Temperature ◽  
Seed Viability ◽  
Seed Storage ◽  
Storage Duration ◽  
Seed Moisture Content ◽  
Seed Moisture ◽  
Storage Behavior ◽  
Storage Studies ◽  
And Storage

Abstract Background: Globally, forestry faces challenges in the availability of seeds due to limited knowledge on seed handling of various species. Forestry seeds are constantly being reviewed and classified as either recalcitrant, intermediate, or orthodox based on their storage behavior. It is essential to understand the tree seed storage behavior to maintain seed viability and thus minimize seed losses. There is scanty literature combining factors of seed moisture content (6%, 9%, 12%, 15%, and 20%), seed storage temperature (20oC, 5oC and -20oC), seed storage duration (1, 4, 9 and 12 months), and germination in different sites with varying environmental variables. Ehretia cymosa is important in the Afromontane forestry landscape as a medicinal, rehabilitation, and conservation species. This study conducted desiccation and storage studies and their influence on the viability of E. cymosa seeds. The study sought to determine the optimum conditions for the storage of Ehretia cymosa that maintains viability. Results: This study observed that E. cymosa dried to seed moisture content of 6%, stored for 12 months at 20oC and sown in the laboratory had the highest germination performance (27.6 ± 3.18%) (p<0.05). Conclusion: This confirms that E.cymosa seeds exhibit orthodox storage behavior. The authors recommend longer storage studies (>12months) to determine the actual longevity of the seeds of this species. The significance of these results would be useful for foresters and farmers that would need to use this species for various purposes.

scholarly journals Storage of seeds of Calamus palustris var. cochinchinensis

2020 ◽  
Vol 48 (2) ◽  
pp. 201-207
Author(s):  
Y.K. Fan ◽  
M. Liu ◽  
J.X. Hu ◽  
M.Y. Ji ◽  
Q.Y. Lan
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
Storage Temperature ◽  
Aluminum Foil ◽  
Effect Of Temperature ◽  
Seed Moisture Content ◽  
Seed Desiccation ◽  
Seed Moisture ◽  
Mature Seeds

The present study examined the effect of temperature (15, 20, 25, 30 and 20/30°C) on germination and the storage behaviour of freshly harvested mature seeds of Calamus palustris var. cochinchinensis. Seed desiccation tolerance and the effects of storage temperature (4 and 15°C), perlite water content (120, 180 and 240%) and seed moisture content (27.8, 38.2 and 49.2%) on viability were observed. Seeds had a higher germination at 25°C (88.3%) than at the other tested temperatures. Germination decreased as the seed moisture content decreased during desiccation. The germination of seeds stored at 15°C was higher than that of seeds stored at 4°C. Germination of seeds stored at 15 and 4°C was <65% and with extension of storage time, the germination decreased, indicating that neither temperature can be used for long-term conservation. For short-term storage, the seeds can be stored at 15°C with perlite with 180% water content in plastic bottles or at 15°C with 49.2% moisture content sealed inside aluminum foil bags.

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 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.

Influence of oil content on the equilibrium moisture content of evening primrose ( Oenothera SPP.) seeds

2007 ◽  
Vol 55 (4) ◽  
pp. 485-489 ◽  
Author(s):  
A. Fieldsend
Keyword(s):  
Moisture Content ◽  
Equilibrium Moisture Content ◽  
Oil Content ◽  
Seed Oil ◽  
Oil Quality ◽  
Seed Oil Content ◽  
Seed Moisture Content ◽  
Evening Primrose ◽  
Seed Moisture ◽  
The Relationship

Seed moisture content is a well-recognised index of safe storage. However, when in equilibrium with the storage environment it is merely an indicator of the relative humidity of the air, which is the primary regulator of the growth of moulds and insects. The relationship is influenced by the profile of the seed components. During the 1990s, significant increases in the seed oil content of evening primrose were achieved through plant breeding. This paper shows that the equilibrium moisture content of evening primrose seeds declines significantly with increasing oil content. Hence, the moisture isotherm is altered and newer cultivars must be stored at slightly lower seed moisture contents to ensure that seed and oil quality are maintained.

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