2024-03-28T11:54:33+03:30 http://yujs.yu.ac.ir/jisr/browse.php?mag_id=2&slc_lang=fa&sid=1
2-31 2024-03-28 10.1002
Iranian Journal of Seed Research Iranian J. Seed Res. 2383-1251 2383-1480 10.61186/yujs 2014 1 1 Quantification of seedling emergence of volunteer canola and wild mustard under various burial depths Elias Soltani elias.soltani@ut.ac.ir Afshin Soltani Serollah Galesh Farshid Ghaderi-Far Ebrahim Zeinali The aim of this study was to investigate and to quantify the effect of burial depth on seedling emergence of volunteer canola and wild mustard. Seeds were buried in 12 different depths (1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 30 cm) in 4 replications and seedling emergence was measured daily. Results indicated that emergence percentage of volunteer canola was around 98 % from 1 to 2.9 cm of burial depth and deeper depths decreased emergence percentage with a slope of -0.4 and reached to zero in burial depth of 10 cm. Seedling emergence percentage of wild mustard was described using an exponential model on the response to burial depth. According to the model, wild mustard seedling emergence decreased from 66 % in 1 cm depth to 0 % in 8 cm depth. Increasing burial depth leads to reduction of seedling emergence rate that it well quantified for both species. Seeds of these two species that buried in deeper soil layers from 10 cm for volunteer canola and 8 cm for wild mustard can expand soil seed bank and will not emerge. The results of this study may provide useful information in ecological weed management and prediction seedling emergence of weeds. Seed bank Burial depth Wild mustard Volunteer canola. 2014 5 01 1 10 http://yujs.yu.ac.ir/jisr/article-1-31-en.pdf 10.29252/yujs.1.1.1
2-29 2024-03-28 10.1002
Iranian Journal of Seed Research Iranian J. Seed Res. 2383-1251 2383-1480 10.61186/yujs 2014 1 1 Effects of different storage temperatures on sunflower seeds vigor Leila Yari yaril2001@yahoo.com Shahla Hashemi Farshid Hasani The cultivation of sunflower (Helianthus annuus L.) has significantly increased in recent years, mainly due to the quality of its oil, which is useful for the human consumption and industrial purposes. In order to investigate the effect of different seed storage temperatures on seed quality of two sunflower cultivars (Euorfluor and Rcord), seeds were exposed to three storage temperatures (5, 20 and 20-30C°) for four months. Experimental units were arranged factorial manner in a completely randomized design with four replications. The effect of storage under 20C° was more effective in maintaining the vigor of sunflower seeds. The effect of storage at 5C° culminated in damage of vigor of sunflower seeds by increasing electrical conductivity (EC) and mean germination time. The effect of storage at 20-30C° (alternative temperature) brought about seedling growth by comparing with other treatments. This study indicated that best results for germination and vigor of sunflower seeds found for the seed of Euorflour cultivar in comparison with to Record cultivar under seeds storage temperature. Storage Electrical conductivity Germination Helianthus annuus Seed vigor 2014 5 01 11 19 http://yujs.yu.ac.ir/jisr/article-1-29-en.pdf 10.29252/yujs.1.1.11
2-36 2024-03-28 10.1002
Iranian Journal of Seed Research Iranian J. Seed Res. 2383-1251 2383-1480 10.61186/yujs 2014 1 1 The reaction of different cultivars of rice (Oryza sativa) to high and low salinity in vitro condition Asad Masoumi Asl masumiasl@yahoo.com Rreza Amiri Fahliani Hamidreza Balouchi Salinity is one of the most extensive environmental stresses and is a limiting factor for the growth and development of crops, such as rice. Then, an experiment based upon completely randomized design with four low levels (0, 7.5, 15, 22.5) and four high of salinity (75, 150, 225 and 300 mM) with control as the first factor and nine cultivars of rice (dollars, Hasan Saraii, Mousa Tarom, Kamfiruz, Lenjan Askari, Gharib, Domsiah Mamassani, 304, Champa Yasouj) as the second factor with three replications was conducted in 2012 in the Yasouj University. Results showed that Hasan Saraii had salinity tolerance with the most germination percentage, germination rate and shoot length at high salinity levels (more than 75 mM), and Domsiah Mamassani with the minimum of that traits had not any salinity tolerance. But in the low salinity (less than 22.5 mM), Hasan Saraii, Lenjan and Mousa Tarom had the highest percentage of germination. The maximum germination rate was due to Mousa Tarom and the maximum shoot length observed in Gharib variety. So it seems, if we would only consider the germination percentage, Hasan Saraii is the best variety and if the maximum germination percentage and rate are considered, the variety that would be considered is Mousa Tarom. Therefore, high salinity we should not just rely on the germination but the germination rate should also be noted and in lower salinity due to different cultivars germination percentage, germination rate and dry weight of root should be paid much more attention. Rice Salinity Germination Percentage Germination Rate Seed Vigor 2014 5 01 20 32 http://yujs.yu.ac.ir/jisr/article-1-36-en.pdf 10.29252/yujs.1.1.20
2-32 2024-03-28 10.1002
Iranian Journal of Seed Research Iranian J. Seed Res. 2383-1251 2383-1480 10.61186/yujs 2014 1 1 Effect of different levels of salinity stress on seed germination and early growth of fenugreek (Trigonella foenum-greacum) seedling Azam Roumani Mohammadreza Ehteshami smrehteshami@yahoo.com In order to study the effect of different levels of salinity stress on germination indices and early growth of Trigonella foenum-greacum L., an experiment was conducted in agronomy laboratory of Faculty of Agricultural at the University of Guilan in 2012. The experiment was arranged base on completely randomized design with four replications. The used treatments were different levels of salinity stress due to NaCl (0, -0.2, -0.4, -0.6, -0.8, -1, -1.2, -1.4, -1.6 and -1.8 MPa). Results showed, by increasing of salinity levels, decreased germination percentage, germination speed, germination energy, germination rate index, water percentage of seedling tissue, seedling length, the dry and fresh weight of seedling and vigor index significantly. However, the levels of salinity (-0.2 and -0.4 MPa) increased the dry and fresh weight of seedling in comparing with control by growth stimulation. Moreover, germination rate reduction had increased trend in comparing with control. Results indicated that there was a positive significant correlation between percent of germination and other germination indices except for germination rate. Generally, the results showed fenugreek seed can tolerate salinity amount until -1.2 MPa (38.9 ds/m) in germination time. Fenugreek Germination Salinity stress Vigor 2014 5 01 33 45 http://yujs.yu.ac.ir/jisr/article-1-32-en.pdf 10.29252/yujs.1.1.33
2-34 2024-03-28 10.1002
Iranian Journal of Seed Research Iranian J. Seed Res. 2383-1251 2383-1480 10.61186/yujs 2014 1 1 Effect of priming on millet (Panicum miliaceum) seed germination under drought and salt condition Hamdollah Eskandari ehamdollah@gmail.com Ashraf Alizadeh-Amraie A laboratory experiment was conducted to evaluate the effect of seed priming under salt and drought conditions on seed germination and early seedling development of millet. A factorial experiment (3×2×5) based on completely randomized design with three replications was employed. The first factor was the effect of seed priming (control, hydro priming and KNO3), the second factor was the effect of salt and drought stresses including NaCl and PEG 6000 and the third factor was the effect of osmotic potential levels (-0.3, -0.6, -0.9 and -1.2 MPa). Results showed that germination performance was negatively affected by decreasing osmotic potential. There was a variable germination with different stress condition, in which seeds were able to germinate at all concentration of NaCl but no significant germination was occurred at -0.6 MPa of PEG for no primed and KNO3. However, both seed priming treatments (Hydropriming and KNO3), improved seed germination performance with the clear effectiveness of Hydropriming in improving germination properties under salt and drought conditions. It was concluded that germination inhibition resulted from osmotic effect rather than salt toxicity. Germination Priming Seedling growth Stress 2014 5 01 46 55 http://yujs.yu.ac.ir/jisr/article-1-34-en.pdf 10.29252/yujs.1.1.46
2-35 2024-03-28 10.1002
Iranian Journal of Seed Research Iranian J. Seed Res. 2383-1251 2383-1480 10.61186/yujs 2014 1 1 The effect of methanol and some micro-macronutrients foliar application on Maize (Zea mays) maternal plant on seed vigor Ebrahim Khalilvand Behrouzyar e.khalilvand@iaut.ac.ir Mehrdad Yarnia yarnia@iaut.ac.ir In order to investigate the seed vigor of corn hybrid 704 after maternal plant foliar application with methanol, some micro and macro-nutrients an experiment was conducted in a factorial form based on RCBD with three replications during growing seasons of 2010-2011. Treatments were four growth stages (the 8-10 leaves, the tasseling, the seed-filling, all the stages), seven levels of foliar application (Methanol, Zn, B, Mg, N, Mn, a mixture of all combinations) and control. The analysis of the data showed a significant effect of the combination type of foliar application in different stages on the germination percent, mean daily germination, germination speed, seedling vigor index, radical length, plumule length and seedling dry weight. The detailed results of the study showed that foliar application with N, Mg, Zn, Mn and B in grain-filling stage, foliar application with N, Mg and Mn in tasseling and foliar application with N, Mg and B in all stages had the highest germination percent (100%) and mean daily germination (14.29%). Also, Mg-foliar application in grain-filling and all stages, B-foliar application in grain-filling stage had the highest germination seed (12.33). In addition, Mg-foliar application in grain-filling stage had the vigor index, radical length, plumule length and seedling dry weight. Germination Growth stage Vigor 2014 5 01 56 66 http://yujs.yu.ac.ir/jisr/article-1-35-en.pdf 10.29252/yujs.1.1.56
2-30 2024-03-28 10.1002
Iranian Journal of Seed Research Iranian J. Seed Res. 2383-1251 2383-1480 10.61186/yujs 2014 1 1 Effect of seed priming on growth features of Spinach (Spinacia oleracea) in sub-tropical regions Gholam Reza Sharifi-Sirchi sharifi-sirchi@hormzgan.ac.ir In order to extend the cultivation season and increase in growth ability in tropical regions, the effect of priming media, SA, NaCl, PEG, water and vitamin B1 with chemical elimination of pericarp by sulphuric acid, evaluated on growth characters of spinach under high temperature stress (25, 30, 35 °C). Results showed that PEG and vitamin B1 pretreatment after scarification with sulphuric acid 9 M increased germination percentage under 25 and 30°C. Also, for the propose of considering the effect of different priming media on spinach see at the optimum temperature of winter, seeds were sown in greenhouse and farm in Minab city. Results of greenhouse cultivation showed that hydro-primed seed and seed which primed with vitamin B1 and PEG had the highest emergence. In the field, the primed plant treated with vitamin B1, NaCl and distilled water had the highest yield. Therefore, this study suggests proofing laboratory results some experiments should be performed in farm filed with hotter temperatures by using vitamin B1 and PEG pretreatments. Vitamin B1 Sulphuric acid Pericarp Germination 2014 5 01 67 75 http://yujs.yu.ac.ir/jisr/article-1-30-en.pdf 10.29252/yujs.1.1.67