S. Sheidaei; Aidin Hamidi; Hossein Sadeghi; Bita Oskouei
Abstract
A factorial experiment was conducted to evaluate the biochemical changes during the soybean seed deterioration based on a completely randomized design. The treatments consisted of germination in two levels of minimum and high quality, three initial seed moisture content (low, medium and high moisture), ...
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A factorial experiment was conducted to evaluate the biochemical changes during the soybean seed deterioration based on a completely randomized design. The treatments consisted of germination in two levels of minimum and high quality, three initial seed moisture content (low, medium and high moisture), and two storage conditions were considered including the common storage in Moghan and the controlled storage condition. Indices of germination percentage, vigor and biochemical changes including protein content, soluble sugars, malondialdehyde, catalase and peroxidase enzymes were evaluated. The study of biochemical changes of deteriorated seeds during the storage showed that, with the increase of seeds’ deterioration, the soluble sugars and protein percentage decreased, as well. Moreover, seeds’ storage in poor condition caused a significant decrease in seeds’ soluble sugar and total protein content. Also, the increase of seed moisture was followed by further seed deterioration that significantly decreased the content of soluble sugars and total protein. Significant differences were observed between seeds with different initial germinations and they had significantly higher content of soluble sugars and protein percentages. Furthermore, measuring the amount of malondialdehyde and the activity of catalase and peroxidase enzymes indicated that there exists a significant correlation between the degree of seed deterioration with the level of malondialdehyde and the activity of scavenging enzymes. Overall, along with the decrease of germination and the quality of soybean seeds after the storage, the amount of lipids peroxidation increased and the seed deterioration decreased the activity of catalase and peroxidase enzymes during the storage.
Bita Oskouei; Aidin Hamidi; Saman Sheidaei; maryam divsalar; hossein sadeghi
Abstract
This experiment was done in seed and plant certification and registration institute laboratory in 2015. The treatments were corn seed produced in Karaj and Moghan , seed storing condition in two controlled and Free weather conditions stores also Disinfection and non- Disinfection. The experiment was ...
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This experiment was done in seed and plant certification and registration institute laboratory in 2015. The treatments were corn seed produced in Karaj and Moghan , seed storing condition in two controlled and Free weather conditions stores also Disinfection and non- Disinfection. The experiment was conducted as factorial based on completely randomized design in three replications. Germination percent of Karaj seeds before accelerated aging test was 92 percent and after 144 hours aging, it reduced 3 percent in controlled storage and it dropped 6 percent in Moghan conditions storage. While similar condition led to a decrease of 18 and 28 percent in Moghan seeds produced. When seeds were stored in controlled storage, indicated 17 percent higher protein content compared to storage in Moghan conditions. Catalase activity of Karaj seeds was higher than Moghan seeds (14%). Seed treatment had significant effect on peroxidase and MDA content, as peroxidase activity in treated seeds was 11 percent higher and MDA content was 8 percent lower than untreated seeds. Karaj seeds in controlled storage had the highest peroxidase activity and the lowest MDA content. So production seed conditions in Moghan was more critical in terms of temperature and humidity than Karaj so the biochemical properties of seeds have been affected. So that Moghan seeds had less storability after storing. On the other hand, seeds in Moghan store subjected to more critical temperature and humidity than controlled condition so more deteriorated.
A. Hamidi; Hossein Sadeghi; Hamidreza Gazor; Saman Sheidaei; Bita Oskouei; Hassan Mivechi; Mohammad Nouri; Shapour Alizadeh; Saber Seifamiri; Leila Zare; Azam Dashti
Abstract
This research in order to study on post-harvest process effect on 2 soybean commercial Williams and Saba (L17) in Moghan region was conducted as a 2×5, two cultivars× 5 post-harvest process stages including after harvest, after drying, after cleaning after packing and stacking and storage, ...
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This research in order to study on post-harvest process effect on 2 soybean commercial Williams and Saba (L17) in Moghan region was conducted as a 2×5, two cultivars× 5 post-harvest process stages including after harvest, after drying, after cleaning after packing and stacking and storage, factorial experiment based on completely randomized design by 3 replications. Studied traits were normal seedlings percent in standard germination test and after accelerated ageing test, seedling weight vigour index after standard germination test, broken seeds percent, cracked coat seeds percent and electrical conductivity. Results revealed Williams cultivar had more normal seedlings percent after accelerated ageing test and seedling weight vigour index after standard germination test and less cracked coat seeds percent. Also the least normal seedlings percent in standard germination test, normal seedlings percent after accelerated ageing test and seedling weight vigour index after standard germination test and the most broken seeds percent, cracked coat seeds percent and electrical conductivity investigated. Based on this research results Williams cultivar seeds had more germination ability and vigour preservation potential during post-harvest process stages than Saba (L17) cultivar. Also germination ability and vigour decrease after drying and storage stages revealed seed drying unsuitability.
H. Sadeghi; H Heidari Sharifabad; A. Hamidi; Gh. Nourmohammadi; H. Madani
Abstract
High temperature during seed set and seed filling can reduce yield and seed quality. In order to evaluate the effect of high temperature during planting date and also plant density on soybean seed quality, an experiment was conducted at two locations, namely, Seed and Plant Certification and Registration ...
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High temperature during seed set and seed filling can reduce yield and seed quality. In order to evaluate the effect of high temperature during planting date and also plant density on soybean seed quality, an experiment was conducted at two locations, namely, Seed and Plant Certification and Registration Institute in Karaj and Agricultural and Natural Resource Center of Moghan, in 2013. The studied factors were included planting date (5th of May, 5th of June and 5th of July), plant density (300, 400 and 500 thousand plant/ha) and soybean varieties (Williams and L17) were sown in the rate of 40 plants per m-2 at 5th May, 5th June and 5th July. The experiment was conducted as a factorial based on a randomized complete block design (RCBD) with three replications. The results of standard germination test showed that in Moghan area, the highest normal seedling percentage (92.1%) was obtained at fifth of June and in Karaj area, it (96.2%) was gained at fifth of July. In addition, it was noticed that cv. L17 in Moghan and cv. Williams in Karaj had the highest normal seedling percentage. The results of accelerated aging test was cleared that the normal seedling percentage in karaj was more than Moghan area and it showed that the quality of seed that were produced in Karaj was better than Moghan area. There was no significant difference between areas in 300 and 400 thousand of plant/ha and in these both density, the result of Karaj was better than Moghan area, but there was significant difference between normal seedling percentage after accelerated aging test in Karaj (77.6%) and Moghan (58%) in 500 thousand plant/ha. The highest seedling vigor index (11.75) was obtained in 400 thousand plants/ha at fifth of July in Karaj area and the lowest rate of it (5.41) was observed in 300 thousand plants/ha at fifth of June in Karaj area.
Volume 2, Issue 1 , March 2013, , Pages 1-7
Abstract
In order to investigate the effect of seed size onemergence percentage, seedling establishment and some quantitative characteristics of four Safflower genotypes, (Goldasht, Padideh, Mahalli Esfahan and Sina) and three sizes of seed (small: 2-3mm, large: andgt;3mm and control: no sorting) an experiment ...
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In order to investigate the effect of seed size onemergence percentage, seedling establishment and some quantitative characteristics of four Safflower genotypes, (Goldasht, Padideh, Mahalli Esfahan and Sina) and three sizes of seed (small: 2-3mm, large: andgt;3mm and control: no sorting) an experiment was conducted in the field of Seed and Plant Certification and Registration Institute, during 2008-2009, located in Karaj. The seeds were planted in (4andtimes;3) factorial arrangement based onrandomized complete block design with three replications. The results expressed significant differences among cultivars for all traits except number of plant per plot, also significant differences observed among all sizes for whichcultivars Goldasht and Padideh for most of the traits were superior than other cultivars. According to mean comparison, large seeds with the highest amount of SEP (80.75%), 1000-SW (51.96g), Seed Yield (230.75g/m2 ) were superior compare to control and small seeds. Since Goldasht and Padideh were superior than other cultivars, also creating vigorous seedlings by large seeds, using cultivars with adequate food storage and selecting large seeds with more germination potential to obtain higher yield and good plant establishment recommended
Volume 2, Issue 1 , March 2013, , Pages 55-64
Abstract
In order to study effect of seed priming on seedling emergence and vigour of wheat cultivar ,experiment was conducted in laboratory seed and field ,in seed andamp; plant certification and registration Institute in 2009. Experimental design was a factorial based on completely randomized designs with four ...
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In order to study effect of seed priming on seedling emergence and vigour of wheat cultivar ,experiment was conducted in laboratory seed and field ,in seed andamp; plant certification and registration Institute in 2009. Experimental design was a factorial based on completely randomized designs with four replication. Two cultivars (Azar-2,Sardare-101)andtimes; four priming media and control (un soaked) were used in this experiment. Seeds were primed for 12 hour and 20 ċ in four priming media , PEG 10%, KCl 2%, KH2PO4 0/5%, distilled water and control. In pot experiment seedling emergence percent, seedling leugth, primary root and shoot leuth, and sedling dry weight, primary root and shoot dry weight and mean seedling emergence rate and time and in tield experimcut seedling emergence percent and mean rate and time detemined. Result vevealed . The interaction among seed priming media andtimes;cultivar showed the significant effects on stem length , root dry weight ,stem dry weight and total dry weight (andalpha;= %1), seedling length and Mean Emergence Rate (andalpha;=5%). All of the priming media caused that seeds emergence rapidly in compare with control. In compare among seed priming, Maximum root dry weight, stem dry weight and total dry weight was obtained for seeds osmoprimed with KCl 2%.The most percent emergence, mean emergence rate and seedling length was obtained for seeds osmoprimed with PEG 10%.In field condition hydro priming improved the rate of germination . In compare among seed priming, the most percent emergence in field was obtained in PEG 10%.The interaction among seed priming , seed priming media andtimes;cultivar showed the significant effects on percent emergence. The most was observed in sardari-101andtimes; KCl 2% and PEG 10%andtimes;Azar-2.
Volume 1, Issue 2 , December 2012, , Pages 139-146
Abstract
In order to evaluation of moisture content at harvesting of two Oilseed Rape(Brassica napus L.) a study was conducted in 2007- 2009 in Dezfoul region. Therefore, samples of Hyola 401 and Hyola 308 seeds at 10, 15, 25 and 35% moisture content at harvest were taken from the field in Dezfoul and tested ...
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In order to evaluation of moisture content at harvesting of two Oilseed Rape(Brassica napus L.) a study was conducted in 2007- 2009 in Dezfoul region. Therefore, samples of Hyola 401 and Hyola 308 seeds at 10, 15, 25 and 35% moisture content at harvest were taken from the field in Dezfoul and tested at the seed analysis laboratory. Some seed quality indices like primary and final germination percentage (seed viability) and daily germination speed (DGS) were measured. Data obtained using a 2andtimes;4 factorial experimental based on a completely randomized design with three replications, combined analysis revealed that primary and final germination percentage affected by cultivar andtimes; seed moisture content andtimes; year interaction and daily germination speed affected by cultivar andtimes; seed moisture content interaction. The highest primary and final germination at 15% seed moisture content and and daily germination speed in seeds with 10 and 15% moisture content was more than seeds with 25 and 35% moisture content. In addition, primary and final germination percentage of Hyola 401 was higher than Hyola 308. These results revealed that seed quality was affected by environmental factors and seeds harvested at 15% moisture content showed the highest quality.
