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Kamrul Hasan et al. / Agricultural Advances (2017) 6(1) 383-390
383
Agricultural Advances (2017) 6(1) 383-390
ISSN 2251-7820
doi: 10.14196/aa.v6i1.2359
Effect of moisture levels and storage periods on the seed quality of lentil (Lens
culinaris L.)
Kamrul Hasana, Shafiqul Islam Sikdara, Ayman EL Sabaghb, Hany Gharibb, Mohammad Sohidul
Islama,*
aDepartment of Agronomy, Hajee Mohammad Danesh Science and Technology University, Bangladesh.
bDepartment of Agronomy, Faculty of Agriculture, Kafrelsheikh University, Egypt.
*Corresponding author; Department of Agronomy, Hajee Mohammad Danesh Science and Technology University, Bangladesh.
A R T I C L E I N F O
Article history,
Received 11 December 2016
Accepted 12 January 2017
Available online 19 January 2017
iThenticate screening 13 December 2016
English editing 10 January 2017
Quality control 17 January 2017
Keywords,
Lentil
Moisture levels
Storage
Seed quality
A B S T R A C T
To evaluate the effect of moisture levels (ML) and storage
periods (SP) on the seed quality of lentil was investigated in the
laboratory of Agronomy Department, Hajee Mohammad Danesh
Science and Technology University (HSTU), Dinajpur, Bangladesh
during March-April 2016. Three moisture levels i.e. ML1 (8.88%),
ML2 (12.23%) and ML3 (14.10%), and three storage periods viz, i)
15 DAS, ii) 30 DAS and iii) 45 DAS were included in the study. Lentil
seeds of ML1 were found in good condition in respect of
germination percentage (GP), better shoot and root length, vigor
index and poor fungal incidence. The highest GP (84.69%) was
found at ML1 (the initial moisture level), with shortened SP (15
DAS) while the lowest GP (52.84%) was found at ML3 of 14.10%
moisture level with the longest SP of 45 DAS. The maximum shoot
length (17.40cm) was recorded at ML1 seed with 15 DAS while the
minimum (12.72cm) was found at ML3 with 45 DAS. The seeds in
less moisture content with 15 DAS SP produced the highest root
length (9.24 cm) and vigor index (2284) and the lowest root length
(3.74 cm) and vigor index (813) was obtained in seeds with ML3 at
the SP of 45 DAS, respectively. Fungal incidence was found less
(14.0%) in lentil seeds with the initial ML (ML1) and it increased
18.33% at ML3 with 15 DAS. It also increased with the increasing
ML from 8.88 to 14.10% and storage periods from 15 to 45 DAS.
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Kamrul Hasan et al. / Agricultural Advances (2017) 6(1) 383-390
384
The least ML with shortened SP was the best and the highest ML
with the longest SP was the worst in respect of all the parameters.
Therefore, optimum moisture level and ideal storage condition
have the greatest benefit on the quality of lentil seeds.
© 2017 Sjournals. All rights reserved.
1. Introduction
Lentil (Lens culinaris L.) is one of the most important legumes among pulses of Bangladesh. It contributes
about 34.65% of the total production of pulse in our country (BBS, 2011). Lentil is widely used by the people of this
country and ranks the second position both in areas and production. The protein content is found to vary from
21.75 to 32.48% (Purseglove, 1968; Dimitrive, 1973). Bangladesh faced seriously in protein malnutrition that has
been threatening to gammy the whole nation. Pulses are considered as the "poor men’s meat” as these are the
cheaper source of protein (Mian, 1976). In Bangladesh capita-1 day-1 consumption of pulses is only 12 gm whereas
the World Health Organization suggest an intake of 45gm of pulses capita-1 day-1 (BARl, 2008). Lentil enhances the
soil fertility and productivity through biological nitrogen fixation. The total yield of legume is very lower as
compared to cereals. Further, yield of legumes in farmers’ field is usually less than 1 ton ha-1 against the potential
yield of 2 to 4 t ha-1 suggesting a large yield gap. So, it is a great scope to increase the total production of lentil at
farm level. Several causes are responsible for low yield of lentil of which the use of traditional local cultivar, uses of
low quality seeds, seed borne infection, insects and disease infestation, fluctuations of temperature and relative
humidity during storage, and crop management practices constitute the major ones. Insufficient amount of quality
seed and its proper storing procedures/conditions, the lentil cultivation is interrupted. During the Rabi season
(November to March) lentil is grown well and seeds harvested from crops are stored for at least 8 to 9 months
before sowing in the next season. Seeds tend to lose their viability at this time due to prevailing high temperature
and high relative humidity. The deterioration of stored seed becomes faster if the seeds are not properly dried and
the atmosphere is not controlled (Delouche et al., 1973). The longevity of seed is determined by many factors
during storage. These include seed moisture content, temperatures, relative humidity, initial viability, stage of
maturity at harvest, storage gas and the initial moisture content of seed entering into the storage (Harrington,
1972). This condition can be achieved by storing the seeds in a climatic region where relative humidity is naturally
low by reducing the level of relative humidity to a favorable level by conditioning of storage environment or by
storing seeds in moisture proof containers (Delouche, 1968).
Moisture is one of the major factors contributing to the deterioration during storage of durable agricultural
products in the tropics and sub-tropics. Above 13% moisture content, infestation of seed storage fungi increases
and also increases respiration due to high temperature causing to decline longevity at a faster rate. Once seed
moisture reaches 18 to 20%, increased respiration and the activity of microorganisms cause rapid deterioration of
the seed. The most non-dormant seeds germinate at 30% moisture content. Seed deterioration increases as
moisture content increase (Harrington, 1972).
The molds and insects severely attacked the seed having 18% moisture content and can be damaged
mechanically. If the crop, whether it is cereal, oilseed or legume, contain viable organism and as such, it continually
respires producing heat and moisture, which, if present in excessive amount, produce suitable conditions for the
growth of other injurious organisms. These, in turn, will cause a loss in both quantity and quality of the crop while
in storage. Therefore, proper storage of seed is a very important factor for crop production. Thus, the primary
importance to the seed industry is successful storage. The main factors affecting seed quality during storage are
the seed relative humidity, temperature and storage conditions. However, research work regarding on the effect
of storage periods and moisture levels on the seed quality of lentil are scarce in Bangladesh. Therefore, a research
work has been undertaken to identify the optimum moisture level for storage and to observe the optimum storage
period for lentil seed.
2. Materials and methods
The experiment was conducted at Hajee Mohammad Danesh Science and Technology University (HSTU),
Dinajpur, during March to May 2016. The experiment was carried out in two factors completely randomized design
Kamrul Hasan et al. / Agricultural Advances (2017) 6(1) 383-390
385
(CRD) with three replications. The experiment consisted of three moisture levels viz. i) ML1 (8.88%), ML2 (12.23%)
and ML3 (14.10%) and three storage periods viz. i) 15, ii) 30, and iii) 45 DAS (days after storage). The seeds of lentil
were supplied by the Institute of Research and Technology (IRT) of Hajee Mohammad Danesh Science and
Technology University (HSTU), Dinajpur for this experiment. Seeds were stored at room temperature and relative
humidity (RH) with three moisture levels for one and a half months. During the storage period, seeds samples were
taken every 15 days from the containers for determination of moisture content of seeds and germination
percentage. To determine the moisture content, the high constant temperature oven method was used following
ISTA rules for seed testing in the laboratory of Agronomy, HSTU. The seeds of about five gram were taken from
each 3 containers. The seeds in grinding mill was weighed after grinding ground materials were poured in a small
container with cover and kept at a temperature of 125-130oC in an oven maintained for a period of 2 hours. The
seeds moisture content of (wet basis) was determined by the following formula.
% MC =
(X2 - X3)
X 100
(X2 - X1)
X1 = Wt. of container
X2 = Wt. of container ground materials before drying
X3 = Wt. of container ground materials after drying
Sampling was done randomly for 3 times from each storage container. First sampling was done at 15 days
after storage, second at 30 days after storage and last one at 45 days after storage for testing germinability and
health status of the seeds of storage containers. The seeds were preserved in the containers and closed with the
lids. The samples were enclosed in three different containers viz. sealed plastic container, polythene bag and
gunny bag with proper labeling at 25±2°C until used for subsequent studies. About 300-400g seeds were used per
container as required filling up the containers based on the size. The lids of the containers were placed firmly to
make it air tight as per as possible. The containers were kept in the wooden rack in the laboratory.
The sand was used as substratum during the germination test. The sand was finely sieved to remove particles
bigger than 0.8 mm and smaller than 0.05 mm in diameter. The rectangular plastic boxes were used to put the
sand. The new sand was used for every test. A uniform layer of moist sand was selected for seed germination and
then covered with sand to a depth of 10 mm, which was left loose. In each plastic tray one hundred seeds were
placed and replicated with fourth. At room temperature the plastic trays with seed were incubated and irrigated at
every odd day. After 8 days, germination percentage was recorded. The normal seedlings and abnormal seedlings
and ungerminated seed were classified according to the prescribed rules given by ISTA.
Germination percentage =
No. of seeds germinated at final count
X 100
No. of seeds placed for germination
At 10 days after placement for germination, seedlings from each plastic glass were collected as a sampling.
Length of shoot and root of individual seedling were recorded manually with scale. The mean lengths (cm) were
calculated as per treatment combination. For vigor index or seedling vigor, data was recorded everyday on
germination up to 10 days of sowing for calculating vigor index. Then root length and shoot length were measured
from seedlings of the pots. Vigor index (VI) was calculated by using the formula of Baki and Anderson (1973) as
shown below:
Vigor index (VI) = Germination (%) X (Mean shoot length + mean root length)
Fungi associated with lentil seeds were detected by using Blotter method as followed by ISTA (1996). In
blotter test, three layers of blotter papers (Whatman filter paper No. l) were soaked in sterilized water and placed
at the bottom of 9 cm diameter Plastic petridish in which twenty five (25) seeds of lentil were placed on the
moistened blotting paper at equal distance between seeds and petridish wall in each plate. One hundred (100)
seeds were tested for each replication. Petridishes containing seeds were incubated for seven to eight days at
25±2°C under 10-12 hours alternating cycles of Near Ultra Violet (NUV) light and 12-14 hours of darkness. The
incubated seeds were inspected individually with the help of a stereo microscope of 25x magnification following
Kamrul Hasan et al. / Agricultural Advances (2017) 6(1) 383-390
386
the keys outlined by Ramnath et al. (1970) and Khan (1975). The pathogens were detected on the basis of their
growth character.
2.1. Data analysis
The data were analyzed by partitioning the total variance with the help of computer using MSTAT-C program.
The treatment means were compared using Duncan’s Multiple Range Test (DMRT) (Gomez and Gomez, 1984).
3. Results and discussion
3.1. Germination percentage
Germination is the most important function of a seed as an indicator of its viability and worth as seed. The
germination capacity of lentil seeds was observed in this study. Germination percentage (GP) at the different
storage period was presented in Fig. 1. The germination of lentil seeds after one and half month storage at all the
moisture levels ranged from 52.84 to 84.69%. The highest GP (84.69%) was recorded at the moisture level of 8.88%
while the minimum germination (52.84%) was recorded at the moisture level of 14.10% in 15 and 45 days after
storage (DAS), respectively.
Fig. 1. Effect of moisture levels and storage conditions seed on germination percentage.
3.2. Shoot length
Various moisture levels and storage periods treatments significantly influenced the shoot length of
mungbean. The maximum shoot length (17.40cm) was recorded in initial moisture level (8.88%) seed at 15 DAS
while the minimum (12.72cm) was found in the highest moisture level (14.10%) at 45 DAS (Table 1).
Table 1
Effect of different moisture levels and storage conditions on shoot length.
Moisture levels
Storage conditions
Shoot length (cm)
15 DAS
30 DAS
45 DAS
ML1 (8.88%)
17.40a
15.29bc
12.20e
ML2 (12.23%)
16.44ab
14.17cd
13.27de
ML3 (14.10%)
16.05ab
14.04cde
12.72de
LSD
1.88
CV%
0.79
In a column, figures having similar letter (s) do not differ significantly whereas
figure s bearing dissimilar letter (s) differ significantly (as per DMRT).
84.69
80.61
79.64
78.21
74.14
72.14
67.51
59.69
52.84
0
10
20
30
40
50
60
70
80
90
100
15 DAS
30 DAS
45 DAS
Germination (%)
Storage periods
8.88%
12.23%
14.10%
Kamrul Hasan et al. / Agricultural Advances (2017) 6(1) 383-390
387
3.3. Root length
Root length varied significantly due to moisture level treatments at different storage periods. The minimum
moisture level (8.88%) treatment produced significantly higher root length than the moisture levelsof 12.23 and
14.1% in all the sampling date from 15 to 45 DAS. The highest root length (9.24 cm) was recorded in the lowest
moisture levels (8.88%) seeds at 15 DAS and the lowest root length (3.74 cm) was recorded in the highest moisture
leveled (14.1%) seeds at 45 DAS (Table 2).
Table 2
Effect of different moisture levels and storage conditions on root length.
Moisture levels
Storage conditions
Root length (cm)
15 DAS
30 DAS
45 DAS
ML1 (8.88%)
9.24 a
8.15 b
6.93 c
ML2 (12.23%)
7.52 bc
6.00 d
4.95 ef
ML3 (14.10%)
5.30 de
4.47 fg
3.74 g
LSD
0.79
CV%
3.55
In a column, figures having similar letter (s) do not differ significantly whereas
figure s bearing dissimilar letter (s) differ significantly (as per DMRT).
3.4. Seedling vigor
The different moisture levels and storage periods significantly influenced the vigor index or seedling vigor.
Vigor index was decreased with the increase of moisture levels and storage periods. The highest vigor index
(2283.97) was obtained from 8.88% moisture level, while the lowest vigor index (813) was recorded in 14.10%
moisture in 15 and 45 days after storage, respectively.
Fig. 2. Effect of different moisture levels and storage conditions on vigor index of lentil seed.
3.5. Germination rate and abnormal seedling
Among the different storage periods and moisture levels, the average germination rate of seeds was found
highest at 15 DAS followed by 30 and 45 DAS and at ML1 (8.88%) followed by ML2 (12.23%) and ML3 (14.10%),
respectively. The analysis of variance indicated that the percentage of abnormal seedlings did not influence
significantly by the storage containers and seed moisture levels. At the end of 45 DAS the abnormal seedling of
lentil seed were increased in all treatment combinations (data now shown).
2283.97
2003
1796
1812
1525
1329
1294
1030
813
0
500
1000
1500
2000
2500
15 DAS
30 DAS
45 DAS
Vigor index (%)
Days after storage
ML(8.88%)
ML(12.23%)
ML(14.10%)
Kamrul Hasan et al. / Agricultural Advances (2017) 6(1) 383-390
388
3.6. Fungal infection of seed
The fungal infection of seed increased with the increasing storage periods from 15 to 45 DAS and moisture
levels 8.88 to 14.10%. The lowest fungal infection (14%) was observed with the lowest ML of 8.88% at 15 DAS and
the highest fungal infection (28.33%) was observed with the highest ML of 14.1% at 45 DAS (Table 3).
Table 3
Effect of moisture levels and storage periods on fungal infection of lentil seed.
Moisture levels
Storage periods
Fungal infection (%)
15 DAS
30 DAS
45 DAS
ML1 (8.88%)
14.00 g
17.33 ef
22.22 cd
ML2 (12.23%)
16.33 f
20.89 d
26.67 b
ML3 (14.10%)
18.33 e
23.00 c
28.33 a
LSD
1.65
CV%
2.33
Values having same letter(s) do not differ significantly by DMRT at P ≤ 5% level.
The highest GP of stored seeds was found at ML (8.88%) in the 15 days after storage conditions for the two
storage duration which were significantly different from other treatments. The highest decreasing rate of GP was
observed at ML3 (14.10%) which was significantly different from all other treatments. It was observed that there
was significant difference in emergence of normal seedlings influenced by storing periods. In case of storage
periods, the GP gradually decreased with increasing storage periods and the highest percentage of normal
seedlings was produced 15 DAS and the lowest at 45 DAS in all moisture levels with the increase in storage
duration, percentage of normal seedlings decreased whereas production of abnormal seedlings and the number of
dead seeds increased indicating substantial loss in seed viability. Similar observation was also reported by Kaur et
al. (1990). Storage conditions along with pathogenic presence of inocula also responsible for causing loss in seed
germination and also eventually causing disease to the emerged seedlings. As seed is highly hygroscopic living
material. It absorbs moisture from air if it is stored in natural environment where relative humidity is higher than
the seed moisture content. For this reason, seeds absorbed moisture from the ambient air and tended to
equilibrium with relative humidity resulting germination percentage decreased.
Moisture levels and storage periods remarkably influenced the shoot and root length of lentil seed. The
decreasing trends of shoot and root length were observed with increasing moisture levels from 8.88 to 14.10% and
increasing storage duration from 15 to 45 DAS (Table 1 and 2). Seed deterioration is natural phenomena and life
span of seeds decrease with the passing of time. Seed deterioration processes however depend on a large number
of genetically and environmental factors. As seed is highly hygroscopic living materials and it absorbs moisture
from the surrounding atmosphere. This higher moisture in the seed may be the main reason of quick deterioration
of GP as well as shoot and root length in the seeds of gunny bag. The results are in agreement with the findings of
Kaur et al. (1990) who stated that seeds absorbed moisture from atmosphere over time and increased the
infestation of insects and diseases resulting decreased GP as well as shoot and root length.
Higher moisture level in seed during storage is one of the main reasons for loses of viability and vigor sooner.
Vigor index decreasing gradually with time (up to 45 DAS) in all moisture levels from 8.88 to 14.10%, might be due
to the low vigor of seeds for long storage periods and fungal more infestation for high moisture content. The
moisture accelerates the respiration rate of seed and microorganism. A higher moisture level may produce heat
rapidly enough to deteriorate seed quality (Brandenburg et al., 1961). Moreover, high moisture initiates
incomplete physiological process of seed germination resulting in loss of viability and germination rate (Harrington,
1972). It is interred that the increase rate of deterioration is agreed with the increase of moisture level in seed
(Agrawal, 2003). Copeland (1967) reported that seedling vigor (growth rate) decline rapidly with the length of seed
storage.
Results from the present experiment revealed that the occurrence of fungal flora is influenced by moisture
levels where in the seeds are stored up to 45 DAS. The incidence of occurrence of different storage fungi increased
gradually with the storing periods of seed. The lower moisture absorption by seeds stored in less time after storage
helped to maintain the seed quality i.e. less infestation (14.0%) during the storage period (Table 3). The present
Kamrul Hasan et al. / Agricultural Advances (2017) 6(1) 383-390
389
results are in agreement with the findings of Ching et al. (1960) who observed that seed moisture plays a vital role
in keeping the seed viability and seed contamination by storage fungi. Moisture content in seeds and storage
periods are responsible for the infestation of fungus diseases (Christensen, 1970; Mian and Fakir, 1989). Mendoza
and Molina (1980) also reported that seed-borne pathogens are also responsible for seedling abnormalities.
Incidence of most of the field fungi was found to reduce with the increase in storage period, whereas there
was no reduction on the occurrence of the storage fungi. The association of field fungi in stored seeds and the
reduction of their incidence with lowering seed moisture content have also been observed by Mian and Fakir
(1989). The seeds under experiment were collected from Kharif-1 season immediately after harvest by the retailer.
The weather condition especially humidity was high in that season. So the seeds were initially infested with the
field as well as seed-borne fungi.
Here it is also found that seed moisture content influenced the lentil seed-borne pathogens during storage.
Moreover, lentil seed-borne fungi were dominant at six months storage compared to that of three months of
storage when kept in different like poly-bag, gunny-bag, earthen pots, tin containers etc. This phenomenon is
supported by Sutherland (1981) who observed that gunny bag seeds contained higher percent of moisture (18 and
20%) than the other containers and cause higher amount of seed borne infection (11.2 and 15.4%). Moisture
content was greatly influenced by the storage containers especially in gunny bag possibly due to the fact that
gunny bag absorbed more moisture through its pore space from the atmosphere and it is highly correlated with
the relative humidity.
4. Conclusion
Germination percentage and growth rate of stored seed at ML1 was significantly higher than the seeds stored
at ML3 with 15, 30 and 45 DAS and the GP decreased with increasing storage periods. Seeds preserved in 8.88%
moisture level along with 15 DAS performed the highest vigor index, root length and less fungal infections.
Therefore, it can be concluded that seeds should be stored in minimum moisture level for short duration of
storage periods.
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How to cite this article: Hasan, K., Sikdar, S.I., EL
Sabagh, A., Gharib, H., Sohidul Islam, M., 2017.
Effect of moisture levels and storage periods on the
seed quality of lentil (Lens culinaris L.). Agricultural
Advances, 6(1), 383-390.
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To observe the moisture content and germination capacity of durum wheat seed stored in different storage containers for certain storage periods, a Lab. experiment was carried out at the Agronomy laboratory, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur, Bangladesh during March-May 2016. The experiment was designed completely randomized design (CRD) with three replications under three storage periods (30, 45, and 60 days after storage) and three seed containers (sealed plastic container, polythene bag and gunny bag). Initial seed moisture content (MC) and germination percentage (GP) was measured before storage of seeds. Seeds stored in containers gradually absorb moisture from air with the advancement of storage periods, and air leaked storage container i.e., gunny bag quickly absorb moisture than other two containers. The maximum values of GP were recorded of durum wheat seed with 30 days after storage (DAS) and the GP reduced significantly with increasing storage periods from 30 to 45 DAS. The highest GP (78.00 %) was found at 30 DAS in sealed plastic container while the lowest (57.67 %) at 60 DAS in gunny bag. The rate of reduction was found to increase with the advancement of storage periods. Durum wheat seed kept in sealed plastic container and ply bag maintained the minimum MC and eventually showed highest GP. An outstanding performance of GP was observed in sealed plastic container seed while the gunny bag provided the inferior GP among all of the three containers. Several fungi was observed such as Alternaria, Aspergillus, Colletotrichum, Fusarium, Penicillium and Rhizopus during germination study, although no insect was found to any storage container during the storage periods. Higher number of fungus was observed in seeds of gunny bag than sealed plastic container and poly bag. In conclusion, durum wheat seeds should be stored in air tight container for certain periods. Keywords Storage containers storage periods moisture content abnormal seedlings biotic factors durum wheat seed 338 Islam et. al.
... Also, the knowledge as such is important for food science, plant breeders, processors and other scientists (Mohsenin, 1986). The moisture content of lentil seeds is important in crop storability and in maintenance of seed quality (Hasan et al., 2017). Also, moisture content strongly influences the mechanical properties of seed and thus the grinding process (Dziki and Laskowski, 2005). ...
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The physical properties and the hardness of lentil seeds, which can also be affected by harvest times, are very important variables in the designing and adjustment of machineries used during harvest, handling and other processes. The objective of this study is to determine the effects of different harvest times on some physical and mechanical properties of lentil seeds. A field experiment was conducted at six harvest times including the harvesting at physiological maturity (H1) and 5, 10, 15, 20 and 25 days after physiological maturity (H2, H3, H4, H5 and H6, respectively). The variables determined were moisture content, diameter, thickness, sphericity, seed mass, bulk density, true density, porosity and hardness of lentil seeds. It was found that seed moisture content, seed dimensions, seed mass and bulk density decreased with delayed harvest time. However, sphericity, true density, porosity and hardness of lentil seeds increased with increased harvest time
... For this reason, seeds absorbed moisture from the ambient air and go ahead to equilibrium with relative humidity, consequently the MC increased. These findings are in corroborated with the results of Kaur et al. (1990) and Hasan et al. (2017b), who stated that seeds absorbed moisture from atmosphere over time and increased the infestation of insects and diseases resulting decreased GP, as well as shoot and root length. Seed deterioration is natural phenomena and life span of seeds decrease with the passing of time. ...
... For this reason, seeds absorbed moisture from the ambient air and go ahead to equilibrium with relative humidity, consequently the MC increased. These findings are in corroborated with the results of Kaur et al. (1990) and Hasan et al. (2017b), who stated that seeds absorbed moisture from atmosphere over time and increased the infestation of insects and diseases resulting decreased GP, as well as shoot and root length. Seed deterioration is natural phenomena and life span of seeds decrease with the passing of time. ...
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A laboratory experiment was conducted at the Department of Agronomy, Hajee Mohammad Danesh Science and Technology University, Dianjpur-5200, Bangladesh to evaluate the storage containers and duration of seed storage on the germinability and health of wheat seeds. The experiment was carried out in two factors, viz. three storage containers naming i) sealed tin container, ii) plastic container, iii) gunny bag, and four storage periods of i) 15 days, ii) 30 days, iii) 45 days, and iv) 60 days. Completely randomized design (CRD) was used in this experiment with eight replications. The results revealed that the germination percentages (GP) of the seeds stored in the gunny bag decreased quickly from 66.1 to 32.8% due to contained with high moisture content in seed. But, slowly decreasing trends of GP from 80.4% to 69.2% was observed in the sealed tin container seeds with lesser moisture content than that of gunny bag and plastic container. The reduction of GP was so higher of 50.38% in the seeds contained in gunny bag than that of only 13.93% in the seeds contained sealed tin container. Wheat seeds stored in sealed tin container, plastic container and gunny bag significantly increased moisture content in ambient condition for 60 DAS. The moisture content of the seeds stored in gunny bag was found to rise remarkably more than other containers. This escalation of seed moisture content was closely related to the surrounding environmental conditions, like temperature and relative humidity where seeds were stored. The rate seed deterioration in gunny bag and plastic container paralleled the level of invasion by storage insect was found. During storage period, insect infected the seeds, and the insect bitten seeds were also found higher in gunny bag and plastic container, but lower in sealed container. Wheat seeds should be stored in air tight sealed container and M. GOLAM AZAM ET AL. 14 drying should be done after some days of storage (45-60 DAS).
... The results in our study are in corroborated with the findings of Umarani & Selvaraj (1996) in soybean, Islam (2008) in durum wheat, Hasan et al. (2017a) in lentil, Islam et al. (2017b) in mungbean, who reported that the GP decreased progressively with increasing storage periods due to absorption moisture from the surrounding environment, which prominently depend on the nature of the storage containers. The rate of reduction of GP due to storage containers and periods are 0.4, 2.71 and 12.86% for tin container, 5.03, 11.72 and 24.11% for poly bag and 13.01, 19.95 and 32.68% for gunny bag at 15, 30 and 45 DAS, respectively. ...
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A laboratory test was carried out to examine the influence of various storage containers and periods on the germination percentage of black gram seed. In this research, three seed containers, viz. sealed tin container, poly bag and gunny bag were used to store the seeds, as well as seeds were stored for three different storage periods, viz. 15, 30 and 45 days and thereby conducted germination tests. The results revealed that storage and storage periods considerably influenced the germination percentage (GP) of black gram seed. The highest GP of 87.73% was found in the seeds stored at sealed tin container, while the lowest GP (71.08%) was observed in the seeds stored in gunny bag. Among the three storage containers, the GP reduced rapidly in the seeds stored in gunny bags (6.52%), followed by poly bag (18.98%). The maximum values of GP (85.43%) of black gram seed were recorded when 15 days after storage (DAS), whereas the lowest GP (68.33%) was at 45 DAS, and the GP decreased noticeably with the increase of storage periods from 15 to 30 and to 45 DAS. In combination influence of storage containers and storage periods, the maximum GP (85.90%) was recorded at when seeds kept in sealed tin container with stored for the shortest duration (15 DAS), while the minimum (58.11%) was recorded in the seeds stored in gunny bag for the longest period with 45 DAS. Seeds stored in 36 the sealed tin containers exhibited an excellent performance regarding GP with the shortest storage periods and, thereby, black gram should be kept in sealed tin containers or like this air tight containers for storage, as well as seeds should be sun dried after a short period for maintaining seed quality.
... We observed a noticeable reduction of GP in the seeds preserved into the air-unprotected container like gunny bag. Similar trends were found by Haque (1982), Kaur et al. (1990), Eswarappa et al. (1991), Umarani and Selvaraj (1996), Hasan et al. (2017a) who reported the suitability of air tight container over gunny bag in keeping the higher GP of seed. ...
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383 This article was published in an Sjournals journal. The attached copy is furnished to the author for non-commercial research and education use, including for instruction at the authors institution, sharing with colleagues and providing to institution administration. Other uses, including reproduction and distribution, or selling or licensing copied, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Sjournals΄s archiving and manuscript policies encouraged to visit: http://www.sjournals.com A B S T R A C T A germination test was carried out to observe the germinability of mungbean seed under storage periods and storage containers at Agronomy laboratory of Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur, Bangladesh during April-May 2014. The experiment was designed completely randomized design (CRD) with eight replications under three storage periods (15, 30 and 45 days after storage (DAS)) and three seed containers (tin container, polythene bag and gunny bag). The maximum values of germination percentages (GP) were recorded of mungbean seed with 15 days after storage (DAS) and the GP reduced significantly with increasing storage periods from 15 to 30 and 45 DAS. The highest GP (82.00%) was found at 15 DAS in tin container while the lowest (51.01%) at 45 DAS in gunny bag. The rate of reduction was found to increase with the advancement of storage periods. The germinability of mungbean seed was observed maximum levels (82.00, 80.89 and 72.68%) when seeds stored in tin container, and the minimum levels (72.42, 66.11 and 51.01%) whilst the seeds stored in gunny bags among the three storage containers under all storage conditions. Mungbean seed kept in gunny bag and tin container provide the highest and lowest reduction of GP, respectively. An excellent performance of germination was observed in tin containers seed while the gunny bag provided the inferior seed germination among all of the three containers. Finally, it could be possible to enhance and maintain the quality of mungbean seeds through proper storage medium with the adequate periods.
Book
Preface. Introduction. Flowering Processes in Plants. Seed Formation and Development. The Chemistry of Seeds. Seed Ecology. Seed Germination. Seed Viability and Viability Testing. Seed Dormancy. Seed Vigor and Vigor Testing. Seed Storage and Deterioration. Seed Production. Seed Conditioning and Handling. Seed Drying. Seed Enhancements. Seed Certification. Seed Testing. Seed Pathology and Pathological Testing. Seed Marketing. Seed Legislation and Law Enforcement.
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Ad- and desorption moisture contents of sorghum seed exposed to relative humidities of 75, 80, and 85% were 14.9-15.8, 15.9-16.6, and 17.0-17.5%, respectively. At moisture contents of 14.5% and above, wet wt basis, invasion by storage fungi and decrease in germinability were proportional to increasing moisture content and to increasing time of storage. A temperature difference of 12-14 C in grain on opposite sides of containers in sorghum originally of 14.3% moisture resulted in rapid transfer of moisture from the warmer to the cooler portion of the grain. That portion of the grain in which the moisture accumulated became heavily invaded and decayed by storage fungi.
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The effects of time, temperature, and moisture on incidence of seeds infected by Caloscyphafulgens (Pers.) Boudier in Sitka spruce, Piceasitchensis (Bong.) Carr., cones was determined by incubating pathogen-inoculated cones on forest duff and subsequently storing them under conditions used to air dry cones before seed extraction. In the field, the percentage of diseased seeds increased gradually and reached about 10% over the 8-week incubation period. This increase was about equally well correlated with increasing time, cone moisture content and cumulative rainfall, decreasing temperature, and all combinations of these parameters. The percentage of diseased seeds did not increase when field-incubated cones were subsequently stored (air-dried) up to 8 weeks, probably because cone moisture content decreased.
Seed Technology. Oxford and IBH Publication Co
  • R L Agrawal
Agrawal, R.L., 2003. Seed Technology. Oxford and IBH Publication Co. New Delhi, India. 395-397.