List of Articles True Potato Seed

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  1 - Effect of potassium hummate on seed germination, tuber yield and yield components, and estimation of heterosis rate and dominance degree in true potato seed hybrids
  Davoud Hassanpanah Anvar Asadi
     This research was performed to evaluate the effect of potassium humate on potato seed germination rate in the greenhouse, tuber yield and yield components in the field and estimation of heterosis rate and dominance degree in true potato seed hybrids during More

     This research was performed to evaluate the effect of potassium humate on potato seed germination rate in the greenhouse, tuber yield and yield components in the field and estimation of heterosis rate and dominance degree in true potato seed hybrids during three years (2008-2010). In this experiment, 3500 true seeds of potato hybrid variety HPS-II/67 were planted after treated with potassium humate for 6, 12, 18 and 24 hours in the planting bed of Biolan peat mass in the greenhouse and direct seed planting was considered as a control. Attributes such as time to seed germination, seed germination percentage and days to germination were recorded in the greenhouse. 540 potato seedlings were transferred to the field at 4-5 leaf stages. The experimental design was a completely randomized block design with three replications. After harvest, number and weight of tubers per plant, tuber average size and marketable tuber yield were counted and measured and 300 hybrids were selected. The selected hybrids with Agria cultivar (control) were planted at Agricultural and Natural Resources Research Station of Ardabil during 2010. The results showed that differences between different treatments of potassium humate were significant for tuber number and weight per plant, tuber average size and marketable tuber yield. The maximum seed germination percentage, tuber number and weight per plant and marketable tuber yield were obtained for 6, 12 and 18 hours treatments of potassium humate. Potassium humate increased germination by 41% and 1.2 kg per m2 marketable tuber yield. Mean tuber yield per plant was 550 g in control and 613.08 g in hybrids. Tuber yield per plant for hybrids had 23.67% over dominance, 6.33% complete dominance, 64% reduction dominance and 6.0% without dominance. In this experiment, about 50.33% of hybrids (151 hybrids) had high tuber yield per plant than their control. Heterosis for tuber yield per plant was achieved 50.33%. Finally, 50 hybrids were selected regarding to tuber yield, tuber uniformity, shallow eye depth, short stolon and yellow flesh and skin color, heterosis rate and dominance degree.   Manuscript profile
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  2 - 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