Initial Seed Moisture Content Research Articles

Sorghum Seed Vigor as Affected by Storage Duration

Abstract Sorghum (Sorghum bicolor (L.) Moench.) was primarily used as food and feed in Indonesia. Although it has spread in many locations, productivity remains low because of a low emergence percentage and poor stand establishment. One of the most critical elements contributing to this low output is seed vigor. Farmers typically preserve their seed for the following season. Sorghum seed is typically stored in standard storage facilities and other types of warehouses. Environmental factors influencing seed quality in storage include seed viability at harvest, initial seed moisture content, mechanical damage during seed processing, packaging material, temperature and humidity in storage, and biochemical injury of seed tissue. The effect of the storage period on sorghum seed will be discussed in this research.

Comparison of hermetic and conventional bags for maize seed preservation in Azad Kashmir, Pakistan

Maize (Zea mays L.) is a major cereal crop used as a staple food worldwide for decades. Farmers store their produce in porous polypropylene bags under humid conditions which negatively affects their quality. In this study, maize seeds were stored in hermetic and conventional bags with an initial seed moisture content of 13.5% (wet basis) and 96.3% germination for 8 months at four major maize growing districts (Athmuqam, Hattian Bala, Muzaffarabad and Rawlakot) of Azad Jammu and Kashmir, Pakistan. Due to high ambient relative humidity conditions (>80%), an increase in moisture was observed in seeds stored in porous conventional bags (14. 7%). This increase was because of high initial relative humidity conditions (79–85%) in conventional bags. Seed moisture content remained unchanged in hermetic bags and internal humidity was 59–60%. As a result of hermetic conditions, germination and seed integrity were maintained in hermetic bags compared to conventional woven bags. Germination drastically decreased in conventional bags and fell to 9 % (Athmuqam), 13 % (Hattian Bala), 11 % (Muzaffarabad) and 12 % (Rawlakot). Higher physical quality losses of maize in conventional bags were because of infestation activity of live insect pest populations (S. zeamais, R. dominica and T. castaneum) that initiated 21.7–23.7 % weight loss in polypropylene bags. Hermetic bags protected seeds from insect pest attack and maintained seed quality. Higher contamination of aflatoxin B1, G1, B2 and G2 (ppb) was recorded in seeds stored in conventional bags as compared to hermetic bags. Aflatoxin B1 was maximum in conventional bag at Hattian Bala (8.93 ppb) followed by Muzaffarabad (6.68 ppb), Athmuqam (5.02 ppb) and Rawlakot (0.71 ppb). In conclusion, the use of hermetic dry chain storage preserves maize seed quality and thus can have a significant impact on the livelihoods of smallholder farmers of humid areas.

Mathematical modelling and verification of open sun drying of cotton seeds

Abstract Researchers have carried out the kinetics of various agro products for open sun drying, but research articles still need to address such analysis for cotton seeds. Open sun drying of cotton seeds has been experimentally investigated and presented in this paper. Shorting of cotton seeds was carried out to collect appropriate samples in current research work. Cotton seeds were found to have a nearly ovoid shape with an average radius of 2 to 2.5 mm. The initial moisture content of cotton seeds was estimated to be 14.65% wet-basis using the hot air oven method. During drying, the reduction in the mass of cotton seeds was measured at every one-hour time interval. From this data, it was observed that drying occurred with a falling rate period. Drying data were fitted with 10 mathematical models available in the literature. Multi-regression analysis in Excel-solver equation was performed to obtain values of constants and coefficients of these models. Coefficient of determination (R2), reduced chi-square (χ2) and root mean square error were taken as criteria for the selection of the best drying model. The diffusion approach and models by Verma et al. were chosen as the most suitable drying models for open sun drying of cotton seeds. Effective diffusivity was estimated and found within the range suggested in the literature.

Physiological and sanitary quality of black bean seeds dependent on storage time and initial seed moisture content

Black beans (Phaseolus vulgaris L.) are a species of great importance for family farming, both for food security and socioeconomic activity. The objective of this work was to assess the physiological and sanitary viability of black bean seeds stored with different initial moisture contents and cold storage periods. It was used a completely randomized design, 3×5 (seed moisture levels: 10, 13 and 16%, and storage periods: 0, 3, 6, 9 and 12 months in cold rooms, with four repetitions). Black bean seeds belonging to variety IPR88 Uirapuru were grown in the municipality of Santa Maria, Brazil, harvested in March 2020, and stored in a cold room (15ºC and 40% RH) in Kraft paper bags (brown type, 1.0 kg). Physiological variables and sanitary quality were assessed through laboratory tests. According to the results, it was possible to verify that the physiological and sanitary quality of black beans were negatively affected with the increase of storage period, in all grades. However, it is possible to store these seeds with moisture contents of 10 or 13% for a period of up to nine months in a cold room, with a 70% germination quality.

Humidity effect on epiphytic microflora development and seed germination of spring bread wheat

The study of accumulated seed funds of spring bread wheat was carried out at the seed production department of the SibRIA (FSBSI “Omsk ARC”). The purpose of the current work was to characterize the development of epiphytic microflora on seeds of spring bread wheat and the change in their germination capacity during a long-term storage with different humidity. There was found out that the seed germination on 88% depended on the moisture content during storage and a number of fungi on their surface. On increasing the initial moisture content of seeds to 17%, the number of microorganisms on them increased significantly, and germination decreased after three years of storage in plastic containers to 0–1.9% in 28 months (2.3 years). There has been established multiple correlation between grain germination (x), moisture content (y) and a number of fungi on its surface (z), significant at the 5% level rxyz = 0.94. Seeds with high humidity, as well as feeble, shrivelled seeds were better stored under aerobic conditions, linen bags in a warehouse with a wooden floor. In polyethylene bags, ripe dry grain (with a moisture content of 6–14%) was stored for a long time, regardless of the floor type in the warehouse, wood or cement. When harvesting seeds in damp cool weather and drying them to a standard moisture content of 14%, it is better to pack the seeds in plastic bags, the type of floor in the warehouse does not matter. At a higher humidity of 17%, it is better to store the seeds in linen bags in a warehouse with a wooden floor to maintain germination.

PEBEDAAN BOBOT DAN KADAR AIR BENIH KOPI TERHADAP KONSENTRASI HORMON GIBERELLIN (GA3) DAN JENIS AIR

West Sumatra is one producing coffee area in Indonesia a significant contribution to economy in Indonesian, because production coffee in West Sumatra unstable, it is necessary to expand the area. The propagation plants coffee is carried out in generative manner and needs be optimized with treating gibberellin hormone and water temperature to germination stage of coffee seeds.This research was conducted at the Seed Technology Laboratory of the Faculty of Agriculture, Andalas University from May to August 2021. The parameters observed were initial seed weight (g), seed weight after treatment (g), initial seed moisture content (%), seed moisture content after treatment (%). The results showed that the observation of initial seed weight and initial seed moisture content showed no significant effect. While the data had a significant effect on the observation of seed weight after treatment with the concentration of gibberellin hormone and seed moisture content after treatment in the treatment of water types, where the observation of seed weight after the highest treatment was in the treatment of gibberellin hormone concentration of 400 ppm with aquadest (G4J1) of 4.23 g and on the observation of the water content of the seeds after the highest treatment, namely the treatment with the concentration of the hormone gibberellin 300 ppm with aquadest (G3J1), which is 46.32%. Key words: Seed Weight, Moisture Content, Aquadest

Hydrothermal treatments affect the development of the hard‐to‐cook defect in cowpeas

AbstractThe hard‐to‐cook defect is a well‐known problem in stored legumes, including cowpeas, which reduces the consumption and utilization of these nutritious foods. It is a generally held view that the enzyme, phytase is involved in the development of the defect. The effectiveness of steam treatments in preventing the characteristic hardening of cowpeas stored under unfavorable conditions was investigated. The factors considered were steaming temperature (100°C, 121°C), steaming time (2, 4, and 6 min) and initial seed moisture content (13%, 20%). The treated cowpeas were stored at either 4°C (no relative humidity [RH] control) or 42°C/80%RH. The texture of cooked treated cowpeas was comparable with the control; the peak forces were 504–639 N and 616 N, respectively, for treated and control cowpeas before storage. Although the treatments reduced the texture of cooked cowpeas prior to storage, only steaming at 121°C for 4 or 6 min prevented hardening during storage. Steaming reduced the phytase activity of cowpeas to 53%–64% of original activity; however, a significant increase occurred with storage. Steaming and storage significantly decreased water absorption from 91.28 g/100 g to 75.68–88.02 g/100 g after 24 h soaking. A decrease in phytate content and increases in electrolyte leakage and pectin loss were also recorded. A lack of significant correlation between cooked bean hardness and the physicochemical indices implies that the improved texture of cooked treated cowpeas occurred through a pathway not typically associated with the development of the hard‐to‐cook defect in cowpeas.

Pengaruh Silica Gel dan Waktu Pengeringan Terhadap Penurunan Kadar Air dan Viabilitas Benih Kedelai Anjasmoro

Soy plant (Glycine max L.) has an important meaning to meet food needs in order to improve the nutrition of the society. Based on previous research, the provision of seeds in sufficient and timely quantities is often constrained due to improper seed processing and the initial moisture content of seeds before relatively high storage. This then attracted the attention of the authors to research to find out whether there is an interaction between silica gel treatment with drying duration to decreased moisture content and seed viability and the growth and yield of soybean varieties of Anjasmoro using experimental methods with Complete Random Design (RAL) 2 factors and the treatment is repeated 3 times so that 12 samples are obtained. The results achieved from this study are that there is an interaction between silica gel treatment and the duration of drying of seed moisture content, seed viability, and the growth and yield of soybean plants (Glycine max L.). The tallest plant of 68 cm is achieved by control treatment with a drying length of 2 weeks. The highest yield weight per plant of 147 grams was achieved by the Control s0 treatment with a drying duration of 2 week.

Influence of desiccants on seed quality attributes of wheat crop under hermetic storage

An investigation was undertaken with main objectives to know the effect of desiccants on seed quality parameters of crop seeds during storage and to assess the benefit cost ratio of storage method (economics) in wheat with initial seed moisture content of 12.3 %, was carried out at Department of Seed Science and Technology, College of Agriculture, UAS, Dharwad. Quantity of desiccants stored per kilogram of seed in wheat seeds is 0.37 kg for zeolite beads, one kg for silica gel, calcium carbonate and control without desiccant in airtight container. The experiment was laid out in Completely Randomized Design with four treatments and five replications. Seed stored with zeolite beads recorded the highest germination (88.8 %) which was on par with silica gel (87.2 %) at the end of storage period. Lower seed moisture and hundred seed weight was observed in the seeds stored with silica gel at the end of storage period. Higher shoot length, root length, seedling vigour-I and seedling dry weight was observed in seeds stored with zeolite beads which was on par with Silica gel at the end of storage period. compared to control. Therefore, it can be concluded that the zeolite beads can safely be used for seed drying without impairment in seed quality.

INFLUENCE OF SEED INITIAL MOISTURE CONTENT, STORAGE CONDITION AND TIME OF STORAGE ON SEEDLING GROWTH STAGES OF COFFEE (COFFEA ARABICA L.)

Coffee is one of the most important agricultural products in the international market and many countries are involved in its production, trade or consumption. Arabica coffee is self-pollinated, homozygous, and normally propagated by seeds. Seeds have been considered intermediate storage behavior with varying results. It is highly desirable that seeds are stored safely to optimize coffee seedling production at the appropriate time and season. The objective of this study was to evaluate the effect of storage temperature, time of storage and initial seed moisture contents on early seedling performances of coffee seeds and to determine the appropriate seed handling method. In this experiment, the influence of initial seed moisture content with four levels (12, 17, 22 & 27%) with storage two temperature (15oC & ambient), time of storage with six levels (sowing after each month and upto 6 months) and on coffee seedling growth stages were studied in a split-split-plot factorial design. The data collected were subjected to ANOVA. The storage environment with cold temperature (15oC) accelerated seedling growth stages parameters much better performances than did ambient temperature condition. All tested seedling growth stages were faster at initial time of storage. After third month seed quality drastically reduced especially under ambient storage condition. Seeds dried to 12% moisture content showed delayed performance throughout the trial period. Seeds with 27% initial moisture content took shorter days to reach at different growth stages at initial storage time but when aged took much days. Storage temperature, time of storage and initial seed moisture contents showed highly significant main and interaction effects and seeds dried to intermediate moisture level (17 and 22%), stored under cold temperature and sown at early times resulted in enhanced seedling growth. It was concluded that drying coffee seeds to 17% to 22% moisture contents and kept under storage with relatively lower temperatures (15oC) for not more than six months of storage showed better performance.

DESIGN FEATURES OF VIBRATION EQUIPMENT FOR DRYING HIGH-MOISTURE SEEDS

Significant difficulties arise in the process of post-harvest processing of high-moisture seed raw materials, in particular, in the process of drying seed lots of vegetable and melon crops such as squash, zucchini, pumpkin. Natural properties and preparatory technological operations cause the initial moisture content of seeds in the range from 55% to 75%, which is mainly due to unbound free moisture. For storage of sowing batches of seeds humidity should make 10% thus duration of postharvest processing and bringing of seeds to conditional properties should be carried out within days after the beginning of harvesting. Of all the branches of the agro-industrial complex, melon seed production remains the least mechanized, and its level of mechanization does not meet the requirements of modern production. Due to the lack of special equipment in the laborious processes of growing seeds and its refinement, machines are used that are not designed for this, which leads to large losses of seed material and its quality. The main reason for this situation is the lack of complete information, scientific research and substantiation of techniques, design and operating parameters of machines and their working bodies. Information that generates contradictions is often encountered. This is due to the lack of generalized theoretical and experimental studies of the drying process of high-moisture seed raw materials in the post-harvest period, which negatively affected the development of equipment and technological lines. In view of the above, the need for technical means for post-harvest treatment should be determined in terms of the need to process the entire crop on farms. All seeds of the harvested crop, which require a long stay in the dryer during the technological process, are subject to drying. The article presents a new design of a vibrating dryer and describes the features of its operation when removing moisture from seed materials from 55% to 10%.

The Effectiveness of Different Priming Treatments on Seeds of Eggplant (Solanum melongena L.) Varieties

Bu araştırmada, farklı patlıcan çeşitlerine ait tohumların hidropriming (HP), ozmopriming (OP) ve termopriming (TP) uygulamalarının tohum çimlenme kalitesi üzerine etkileri araştırılmıştır. Manisa kır çizgili (MKÇ), Kemer 27 (K) ve Aydın Siyahı (AS) çeşitlerinin farklı olgunluk seviyelerinde hasat edilen (çiçeklenmeden sonraki 50, 55, 60 ve 75 gün sonra) patlıcan tohumları 35 0C’de 4 ve 8 saat (1:2/karanlık-aydınlık koşulda) süre boyunca, %10’luk PEG-6000 ile OP, 35 0C’de 4 ve 8 saat (1:2/karanlık-aydınlık koşulda) sürede saf su ile HP ve 50°C’de 2 farklı sürede (15 ve 30 dakika) su banyosunda TP işlemlerine tabi tutulmuştur. Tüm çeşitlerde kontrol ve uygulama gruplarında tohum nem miktarları belirlenmiştir. Uygulamalar sonunda tohumlar yüzey kuruluğu sağlanıncaya kadar bekletilerek ardından petri çimlendirme testine tabi tutulmuştur. Denemeler sonucunda, patlıcan tohumlarının OP, HP ve TP uygulamaları ile canlılık (ortalama çimlenme oranı ve süresi, fide kök-sürgün uzunlukları) bazında değerlendirilmiştir. İncelenen parametreler değerlendirildiğinde, priming olumlu etkisi tohumların olgunluğu ile ilişkili olduğu görülmüştür. Bağımlı değişkenler olan normal ve toplam çimlenme parametreleri; priming, çeşit, olgunluk ve bunların interaksiyonu ile istatistiksel olarak anlamlı bulunmuştur (p

Research of the process of vegetable oil extracting under the influence of a high frequency wave field

Research in a laboratory press equipped with an ultrasonic vibrator was performed to study the nature of a high frequency wave field influence on the process of vegetable oil extracting from safflower seeds. The initial moisture content of safflower seeds, the rotational speed of the press screw, the frequency and amplitude of ultrasonic vibrations have the greatest influence on the oil yield and the cake residual oil content. The analysis of the dependences obtained showed that the parameters of the safflower seed pressing process, the values of which could be varied during the experiments, affect the oil yield identically, namely, with an increase in the rotational speed of the press screw, the oil yield decreases and, consequently, the cake oil content increases. It was found out that moisture content raising increases the oil yield and reduces the residual oil content. Moreover, the most rational value of moisture content in terms of absolutely dry matter is 8.7…11.2%. It was revealed that an increase in the pressure given to the product in the press occurs with a decrease in the effective viscosity inside the surface layer of the mass being pressed due to ultrasonic vibrations imposition. The following parameters should be focused on as rational parameters for safflower seeds pressing providing the minimum residual oil content in the cake: the ultrasonic waves frequency is 22…28 kHz, the amplitude is more than 40 • 10−3 m and the pressure value in the press is from 12…13 MPa. These values obviously depend directly on the grain behavior and its movement in the press during exposure to high-frequency ultrasonic vibrations.

Standardization of ultra- seed drying of okra cv. Kashi Kranti with Zeolite beads and silica gel

Ultra-dry storage, also called low moisture content storage, is a technique for decreasing seed moisture content to below 5-6 per cent using different methods and then stored hermetically at ambient temperatures. Though sun drying is common practice to dry the seeds, it is difficult to bring down seed moisture where high humidity and high temperature is frequently fluctuating. Use of seed dryer also a best alternative to reduce the seed moisture. But it may affect the viability due to temperature fluctuation at the time of seed drying. Zeolite beads (aluminum silicate) and silica gel are desiccants, which can be utilized to Ultra- dry the seeds even in fluctuated temperature and RH without affecting quality of seeds. In this study, standardization of the drying method performed by mixing okra cv. Kashi Kranti seeds with zeolite beads and silica gel, separately, in the ratio of 1:0.5, 1:1, 1:2 and 1:3 (seed: desiccant, by weight) in an air tight container and kept at room temperature. Initial moisture content of seeds (10.5%) was estimated by hot air oven method. Seeds were separated from desiccant and estimated for moisture content after 24h, 48h, 72h, 96h and 120h of drying. Moisture content of the seeds was noted down at every 24h interval. At the end of the experiment, final moisture content of dried seeds was estimated. It was observed that seed drying with zeolite beads was faster than silica gel. Significantly higher moisture content was removed from seeds by zeolite beads, and final moisture content of seeds dried with zeolite beads reached 4.59% in 1:3 ratio, which was higher moisture elimination than seeds dried with silica gel in the same ratio 6.21%. Since, hard seed formation is a problem in over dried okra seeds, germination test were conducted to know the germination (%) and vigour of dried seeds. Germination test reveals no reduction in germination (%) and no hard seed formation even in 1:3 ratio of seeds with zeolite beads. More than 80% germination was observed in all drying conditions and non-dried control which was on par with each other’s. Further work is necessary to know the storability of ultra-dried seeds under air tight condition.

Climate smart Dry Chain Technology for safe storage of quinoa seeds

Quinoa (Chenopodium quinoa) is a climate resilient crop having superior nutritional profile compared to other cereal grains and may help to ensure future food security. Commercial cultivation of quinoa is dependent upon availability of quality seed. Adoption of Dry Chain Technology: drying before storage and maintaining seed dryness through hermetic packaging, may prevent quinoa seed deterioration. Quinoa seeds were dried to 8, 10, 12 and 14% initial seed moisture content (SMC) and stored in conventional (Paper, polypropylene, cloth and jute) and hermetic Super Bags for 6, 12 and 18 months. Seed stored in Super Bag at 8% initial SMC maintained low seed moisture and higher germination. Total soluble sugars and α-amylase activity were higher while EC, reducing sugars and MDA contents were low for the seeds stored in hermetic bag at 8% initial SMC. Seed stored in traditional packaging materials irrespective of initial seed moisture contents, gained moisture due to ambient high relative humidity which resulted in seed deterioration as indicated by increased reducing sugars, MDA contents and seed leachates conductivity and reduced vigor, viability, soluble sugars. The Dry Chain Technology preserves seed quality by maintaining low seed moisture and reducing deteriorative physiological and biochemical changes in the quinoa seed.

The effect of temperature and humidity of storage on maize seed quality

Orthodox seed storage involves storage conditions under low temperature and humidity. Various factors affecting seed storage include: the initial moisture content of seeds, the use of packaging or an airtight packaging and low temperature storage system. Seed storage using different temperatures and humidity will affect the quality of the seeds during the storage period. Storage using room temperature is very crucial particularly on seeds that have deteriorated during handling process prior to storage. In addition, the rate of seed quality decline is relatively drastic. The use of low temperature and air humidity can keep the viability and vigor of seeds even though it has deteriorated. Thus, the quality of seeds during the storage period is strongly influenced by the quality of the initial seed (before storage), seed moisture content, temperature and humidity during the storage period.

Moisture level and storage container effects on seed quality of soybean genotypes under ambient condition

The experiment was conducted at the Seed Laboratory, Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Jamalpur in 2013 to study the effect of seed moisture content and storage containers on seed quality of soybean genotypes. Three genotypes of soybean (AGS 191, ASET 93 and Shohag), four initial seed moisture content (6, 8, 10 and 12%) and two types of storage containers (polythene bag and glass jar) were included in the experimental treatment. Seeds of soybean genotypes was stored at ambient condition were temperature ranged from 15.97 to 29.37 0C, relative humidity ranged from 75.21 to 86.23% and rainfall ranged from 0.00 to 425mm during the whole storage period. Seed moisture content (%), germination (%) and vigour index were recorded at 50, 100, 150 and 200 days after storage (DAS). Result showed that final seed moisture content increased with the increase of initial seed moisture content. Genotype AGS 191 showed the highest germination (%) and vigour index. Seeds stored in polythene bag or glass jar showed similar performance for germination (%) and vigour index. Highest seed moisture content significantly reduced the germination and vigour index errespective of containers. The results indicate that soybean seed can be stored safely for at least 200 days maintaining >80% germination and high vigour when stored in polythene bag or glass jar with 6-8% initial moisture content at ambient room temperature and relative humidity.
 Bangladesh J. Agril. Res. 44(4): 631-640, December 2019

Moisture Content and Packaging Condition on the Germination of Amaranth BRS Alegria Seeds

The objective of this work was to evaluate the effect of the packaging conditions and the initial moisture content of amaranth BRS Alegria seeds, stored in the period of 13 months (10 months ambient conditions and 3 months in cold chamber). The experimental design was completely randomized in a factorial scheme with two initial moisture contents (9.82% and 7.84%), and two packing conditions (sealed and unsealed), with four replications, totaling 16 plots. The germination was in 12 hours photoperiod and 25°C constant temperature, for 7 days. The variables analyzed were percentage of germination (PG), first germination count (FGC), non-germinated seeds (NGS), germination speed index (GSI) and mean germination time (MGT). The sealed 9.82% seed lot presented better results for PG, NGS and GSI (77.5%, 22.5% and 24.88, respectively). The moisture content of 9.82% is adequate for the storage of Amaranthus cruentus BRS Alegria, with no further drying required. It is recommended to seal the packages for the storage of amaranth seeds of BRS Alegria, as it maintains its physiological quality for longer.

Moisture adsorption isotherms and quality of seeds stored in conventional packaging materials and hermetic Super Bag.

Seed moisture content (SMC) is an important attribute to seed quality. Maintaining seed dryness throughout supply chain (The Dry Chain) prevents seed germination and quality losses. Ambient relative humidity (RH) and temperature affect seed moisture and thereof seed moisture isotherm. Present study was conducted to compare the moisture adsorption isotherms of wheat, maize, cotton and quinoa seeds packed in hermetic Super Bag and traditional packaging materials including paper, polypropylene (PP), jute and cloth bags. Seeds were incubated at 60, 70, 80 and 90% static RH. Nearly straight line moisture isotherms for all crop seeds were obtained in Super Bag. Seed moisture contents increased in traditional packaging materials with increasing RH. At higher level of RH, moisture contents increased slightly (1–2%) in Super Bag, whereas this increase was much higher in traditional packaging materials (≈9% higher than original SMC at 90% RH). In second study, seeds were dried to 8 and 14% initial seed moisture contents using zeolite drying beads and were stored in hermetic and conventional packaging materials for a period of 18 months. For all crop seeds, germination was severely affected in all packaging materials both at 8 and 14% initial SMC except storage in Super Bag at 8% SMC. Wheat seed stored in Super Bag at 8% SMC almost maintained initial germination while germination of cotton, maize and quinoa seeds declined 7%, 14% and 30% respectively in Super Bag at 8% SMC. Seed storage in Super Bag can help to prevent the significant increase in seed moisture at higher RH as is evident from moisture isotherm study, thus helps to preserve quality of maize, wheat, cotton and quinoa seeds by maintaining The Dry Chain throughout the storage period.

Fabaceae species: physiological behavior of desiccation tolerance during the germination process

This study aimed to evaluate the behavior of seed, as the sensitivity of desiccation tolerance after being subjected to drying, and observe their effects on the germination of seeds of Tamboril and Mororo. It was determined the moisture content of the seeds for the greenhouse method at 105 ± 3 °C for 24 hours. To determine the standard curve was determined by soaking, as to characterize the loss of desiccation tolerance, seeds were dried for 72 hours over silica gel using a soaking treatments: 0, 24, 48, 72, 96 or 120 hours. Then the seeds were placed in humid chambers and replaced in germination conditions for the resumption of growth analysis thus seeds that germinated and continued its growth were considered tolerant to desiccation, the others were considered hard or killed. The experimental design was completely randomized and the data were submitted to analysis of variance and polynomial regression. It was observed that the initial seed moisture content was 7.33% and 19% for Tamboril and Mororo, respectively. During drying the seed weight of both species showed sharp drop in the first 12 hours. It was found that drying did not cause serious damage to the seed monkfish, in which there was no loss of desiccation tolerance at any stage of germination. Already the seeds of Mororo in periods of 72 and 96 hours, the seeds did not resume growth, highlighting the loss of desiccation tolerance will be shown.