List of Articles Tubers

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  1 - Investigating Effect of Gibberellin Acid on Dormancy Breaking and Germination Speed and Yield of Potato Cultivars
  Babak Maghsoudi Damavandi Sara Shirzad
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  2 - Effect of urea fertilizer application rate on nitrogen uptake and allocation and protein content in of potato
  Mahdi AghighiSahverdi Ahmad Tobeh hedieh mosanaiey
  In order to investigate the effect of different levels of nitrogen fertilizer on nitrogen uptake and allocation to different organs of the plant, especially the tubers, nitrate accumulation and protein yield in potato tuber, during the four-year an experiment implemente More

  In order to investigate the effect of different levels of nitrogen fertilizer on nitrogen uptake and allocation to different organs of the plant, especially the tubers, nitrate accumulation and protein yield in potato tuber, during the four-year an experiment implemented in Agricultural Research Station of Mohaghegh Ardabil University in randomized complete block design with three replications. Factor studied in this experiment was different levels of nitrogen included 0, 80, 160 and 200 kg N ha from urea source. The results showed that application of 160 kg nitrogen per hectare had the highest rates for fresh tuber yield, percentage and yield protein. With increasing of levels of fertilizer from zero to 200 kg per hectare were observed increasing in the characteristics of tuber and shoot nitrogen percentage, nitrogen uptake in tubers, shoots and total plant and nitrate accumulation in dry and fresh matter, so that the characters was lowest in non-fertilizer and application of 200 kg fertilizer was highest value and the highest group statistically. The highest tuber yields (31.49 ton.ha-1) and protein yield (467.95 kg.ha-1) were achived in the first and fourth year, respectively. In general, excessive increase of more than optimal nitrogen in the soil cause reduces the yield of potatoes and also by reducing the amount of protein increases the accumulation of nitrates in tuber and is caused a drop in product quality. Manuscript profile
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  3 - The effect of mini-tuber size and chemical treatments on breaking seed dormancy of potato (Solanum tuberosum L.)
  marjaneh Mansur Reza Zarghami Mehrdad Chaichi Mohsen Pourahmadi
  Seed dormancy is one of the important problems among potato minitubers. It decreases the germination percentage by rotting the tubers. To overcome this problem an experiment was conducted at Agricultural Research Institute of Hamedan in 2012-2013. The experiments were c More

  Seed dormancy is one of the important problems among potato minitubers. It decreases the germination percentage by rotting the tubers. To overcome this problem an experiment was conducted at Agricultural Research Institute of Hamedan in 2012-2013. The experiments were carried out in factorial randomized complete design with two different treatments, the weight of minituber in three levels (1-3 g, 3-5 g and 5-10 g) and chemical treatments in seven levels (no treatment, 150 ppm gibberellic acid in 1 h, 300 ppm gibberellic acid in 1 h, 1% thiourea in 1 h, 0.5% thiourea in 1 h, 45 ml.m-3 carbon disulfide in 24 h, 45 ml.m-3 carbon disulfide in 48 h) with three replications per treatment. The Sante variety was tested for minituber size. After seed dormancy breakage, the days to germination, number of sprouts per minitubers and the sprout diameter were studied and then the mini-tubers were grown in pots. After tuber collection (harvesting), the number of tuber per plant, tuber weight and the total weight of all tubers were measured. We observed the highest stem diameter in 5 – 10 g tubers and the lowest sprout length in 1-3 g tubers. Also, among different breaking seed dormancy treatments, the 45 ml carbon disulfide in 48 h showed the significant increase in sprout length compare to the 45 ml carbon disulfide in 24 h which resulted the highest tuber size and weight. The gibberellic acid (300 ppm) treatment showed the highest number of tubers. The interaction study among treatments showed that, the 45 ml carbon disulfide in 48 h produced tubers with different size and they were high in weight compare to the others.   Manuscript profile
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  4 - Evaluating of Hybrid Mini Tubers Performance as Seed Tubers in Potato Production Compared to Their Parents
  Ebrahim Fataei Hossein Shahbazi1 Jaber Panahande Mehdi Mehdipours Davoud Rezaei
  In order to evaluate the possibility of the use of hybrid mini tubers in potato production, nine TPS families including Desiree×Payezeh, Caesar×Payezeh, Caesar×Aula, Aula×Desiree and Draga ×esiree Hybrids and Desiree, Aula and Daiezer open More

  In order to evaluate the possibility of the use of hybrid mini tubers in potato production, nine TPS families including Desiree×Payezeh, Caesar×Payezeh, Caesar×Aula, Aula×Desiree and Draga ×esiree Hybrids and Desiree, Aula and Daiezer open pollinated populations with five Clonally varieties: including Aula, Caesar , Desiree, Draga, Astrix were compared in an augomented design based on completely randomized blocks. Agronomic traits such as plant yield, plant height, number of stem in plant and number of tubers in plant were noted. The results showed that there are significant differences among treatments for plant height, number of stems and number of tubers and yield. Desiree variety with 557gr per plant yield and then Desiree×Payezeh and Caesar×Payezeh hybrids with 549 and 445gr per plant yield respectively had the higher yield. The least yield was of Aula×Desiree and Payezeh×Aula hybrids. The Desiree×Payezeh hybrid had the highest and the Draga variety and open pollinated Caesar had the lowest height respectively. Astrix and Desiree varieties with average stem number of 4.5 and 4.4 had the highest number of stems. Concerning the number of tubers, Desiree×Payezeh Hybrid with average 20 tubers and Draga with average 4.6 tubers had the highest and lowest number of tubers respectively. The study of correlation coefficient between traits showed a significant relationship between yield plant with the numbers of stem and height of the plant, and also the plant height showed a significant relationship at 5% probability level with the number of tubers and stems. Manuscript profile