Akram Rostamipour; Reza Tavakkol Afshari; Hamidreza Khazaie; Danial Kahrizi; Hamid Reza Eisvand
Abstract
Camelina, an oilseed plant in the Brassicaceae family, is extensively utilized in the food and pharmaceutical industries. This study aimed to investigate the effects of micronutrient foliar application on the growth and yield traits of two camelina genotypes (Soheil cultivar and Line-69) during the periods ...
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Camelina, an oilseed plant in the Brassicaceae family, is extensively utilized in the food and pharmaceutical industries. This study aimed to investigate the effects of micronutrient foliar application on the growth and yield traits of two camelina genotypes (Soheil cultivar and Line-69) during the periods 1400-1401 and 1401-1402 at the Agriculture Research Station of Ferdowsi University of Mashhad,, Iran. The experiment was conducted as a factorial design based on a completely randomized block with three replication, considering line and cultivar. The applied treatments included foliar application of iron sulfate, zinc sulfate, manganese sulfate, a mixture of micronutrients (iron sulfate, zinc sulfate, manganese sulfate), distilled water, and a control. These treatments were applied at two stages: 50% flowering and 50% pod formation. The experiment was conducted as a factorial design based on a completely randomized block with three replication, considering line and cultivar. The results of mean comparison revealed that, over two cropping years, the highest 1000-grain weight (1.20 grams) was attained in the Soheil cultivar during the 50% flowering stage in the first crop year, following the application of manganese sulfate via foliar application. The highest number of pods per plant (214 pods) was also observed in the Soheil cultivar during the 50% flowering stage, achieved through foliar application of iron sulfate in the second crop year. Under the influence of cultivar, the highest seed yield per hectare was obtained in the Soheil cultivar (1930 kg/hectare).
H. Zaremanesh; H.R. Eisvand; N. Akbari; A. Ismaili; M. Feizian
Abstract
In order to reduce the effects of salinity on germination and growth of Khuzestani savory by humic acid, two experiments were performed. The first experiment was done by priming the seeds with zero concentrations, 20, 40 and 60 mg / l of humic acid (H1, H2, H3 and H4, respectively) and germinating them ...
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In order to reduce the effects of salinity on germination and growth of Khuzestani savory by humic acid, two experiments were performed. The first experiment was done by priming the seeds with zero concentrations, 20, 40 and 60 mg / l of humic acid (H1, H2, H3 and H4, respectively) and germinating them in zero salinity (distilled water), 50, 25, 75 and 100 mM أNaCl (S1, S2, S3, S4 and S5, respectively) in petri dishes. In the second experiment in the greenhouse, humic acid at zero, 10, 20, 30 and 40 mg / kg soil (H1, H2, H3, H4 and H5, respectively) and salinity stress including zero, 50, 25, 75 and 100 mM sodium chloride (S1, S2, S3, S4 and S5, respectively). The results of the first experiment showed that germination percentage and rate were decreased by increasing in salinity, While, germination rate and percentage were improved by humic acid priming. Salinity also decreased the growth characteristics in pot experiment. While humic acid led to the improvement of these growth traits. With increasing salinity, electrolyte leakage increased, but it was reduced by humic acid. The positive results of using humic acid in reducing the harmful effects of salinity, in addition to laboratory (seed priming) were also proven in pots (soil application). Therefore, in general, according to the positive results of this study on improving the germination and growth indices of Khuzestani savory plant, the use of humic acid can be recommended to reduce the adverse effects of salinity.
Ameneh Akbarzadeh Sharafi; Hamid Reza Eisvand; N. Akbari; D. Goodarzi
Abstract
In order to study effects of seed priming with Gibberellin (GA), Ascorbic acid (AsA) and Salicylic acid (SA) on mitigation of seed deterioration damage and improvement of seed and seedling qualities of three sunflower cultivars (Farrokh, Barzegar and Shamshiri), a pot experiment was done in 2016. This ...
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In order to study effects of seed priming with Gibberellin (GA), Ascorbic acid (AsA) and Salicylic acid (SA) on mitigation of seed deterioration damage and improvement of seed and seedling qualities of three sunflower cultivars (Farrokh, Barzegar and Shamshiri), a pot experiment was done in 2016. This research was carried out as a factorial experiment based on RCBD with three replications. Seeds were exposed to accelerated aging then primed. Priming treatments were included: control, hydropriming, GA (50 and 75 ppm), AsA (100 and 150 ppm), SA (138 and 207 ppm), GA 50 ppm + AsA 100ppm, GA50 ppm + SA 138 ppm, AsA 100ppm + SA 138ppm, and GA 50ppm + AsA 100ppm + SA 138 ppm. Barzegar cultivar had better seedling emergence percentage and rate than the Shamshiri and Farrokh. Seedling emergence was improved by priming treatments; however, suitable treatments were different for the cultivars. Maximum seedling emergence percentage was obtained in Barzegar by GA 50ppm + SA 138ppm; however in Shamshiri and Farrokh by hydropriming. Priming improved seedling emergence rate of the three cultivars, but the response to priming was cultivar specific. Priming decreased seedling malondialdehyde (MDA) significantly in three cultivars. The lowest MDA content was obtained in Barzegar cultivar primed by AsA + SA.
Saeed Moori; Hamid Reza Eisvand; Ahmad Ismaili; Shahryar Sasani
Abstract
Germination and seedling production have an important role in crop production. This stage is influenced by quality of the seed strongly. Seed priming with gibberellic (GA3 100 ppm) acid and brassinosteroid (BR 100 ppm) on deteriorated wheat (Triticum aestivum. L) seeds were studied. A factorial experiment ...
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Germination and seedling production have an important role in crop production. This stage is influenced by quality of the seed strongly. Seed priming with gibberellic (GA3 100 ppm) acid and brassinosteroid (BR 100 ppm) on deteriorated wheat (Triticum aestivum. L) seeds were studied. A factorial experiment based on a completely randomized design with three replications was conducted in 2016. Treatments were seed aging (non-aged and accelerated aged) and seed pretreatment with GA3 and BR. No priming and hydro priming also were used as controls. Analysis of variance showed that the interaction of accelerated aging and priming was significant for germination percentage, plumule length, R/P L, germination rate, MDG, and GI; and for radicle length, DGS and CVG at 5% level. However, on the seedling length and mean germination time was not significant. The results showed that accelerated aging significantly reduced the soluble protein in seedlings and in turn caused a significant increase in malondialdehyde, soluble sugar, and proline content. The results showed that, the germination characteristics were improved under GA3 treatment.
Volume 4, Issue 2 , December 2015, , Pages 51-65
Abstract
To study the problems of the Astragalus seed germination, a factorial experiment includes ecotype and dormancy breaking was carried out in base of a completely randomized design with 3 replications. The first factor consisted of different ecotypes Samirom, Damavand, Zanjan and the second factor was seed ...
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To study the problems of the Astragalus seed germination, a factorial experiment includes ecotype and dormancy breaking was carried out in base of a completely randomized design with 3 replications. The first factor consisted of different ecotypes Samirom, Damavand, Zanjan and the second factor was seed dormancy breaking treatments in 10 levels (mechanical scarification plus chilling time with 10, 20 and 30 days prechilling at 4 °C, mechanical scarification and gibberellic acid at a concentration of 400 and 500 ppm for 48 hours, scarification with sulfuric acid 96% for 2 and 4 min, mechanical scarification and 2% potassium nitrate for 72 h, mechanical scarification and gibberellic acid 400 ppm for 48 h with 20 days prechilling and intact seeds as control. Results showed that the ecotypes were different significantly for all traits except root length. Interaction of seed dormancy breaking treatments and ecotype were significant for all traits. Damavand ecotypewas higher than the restdue to the high viability, total germination percentage, germination rate and seedling vigor index. Among the treatments, mechanical scarification+gibberellic acid 400 ppm had more effective for germination parameters. Based on the results it could be said that seed dormancy is physical, because of seed scarification treatments they were able to absorb water and germinate.
