List of Articles P. Yadollahi

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  1 - Effect of plant density and planting pattern on yield components and yield of rice (Oryza sativa L.) var. Tarom Amrollahi
  norollah kheyri حمیدرضا MOBASER بهنام masoodi پرویز YADOLAHI
  20.1001.1.20085958.1395.8.26.3.2
  In order to study the effects of plant density and planting pattern on agronomic traits of rice (var. Tarom Amrollahi), a field experiment was conducted as a factorial in a randomized complete block design with three replications in Amol in 2013. Treatments consisted of More

  In order to study the effects of plant density and planting pattern on agronomic traits of rice (var. Tarom Amrollahi), a field experiment was conducted as a factorial in a randomized complete block design with three replications in Amol in 2013. Treatments consisted of three levels of plant density (1, 3 and 5 seedlings per hill) and four levels of planting pattern (15×15, 20×20, 25×25 and 30×30 cm2). Results showed that the interaction effect between plant density and planting pattern was significant on all traits, except fertile tiller number per hill. Increasing the plant density, decreased the plant height, panicle length and number of filled and unfilled grain, but increased the panicle number per m2 and grain yield. Changing the planting pattern from 30×30 to 15×15 cm2, decreased the fertile tiller number per hill by 56.9 %. The treatment of 25×25 and 30×30 cm2 planting pattern with 5 seedlings per hill was represented the highest amount of 1000-grain weight. The highest grain yield was obtained in the treatment of 20×20 cm2 planting pattern and 3 seedlings per hill with the average of 6550 kg.ha-1. It seems that, the plant density of 3 seedlings per hill and planting pattern of 20×20 cm2 was considered as the best planting density for rice of var. Tarom Amrollahi. Manuscript profile
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  2 - Study of morphological traits, yield components and qualitative and quantitative yield in landraces and improved cultivars of rice (Oryza sativa L.)
  norollah kheyri حسام حسین نژاد امیر عباس موسوی پرویز یداللهی
  20.1001.1.20085958.1395.8.27.18.9
  In order to study of qualitative and quantitative traits of landraces and improved cultivars of rice, a field experiment was conducted in a randomized complete block design with three replicaties in Sari Agricultural Sciences and Natural Resources University in 2011. Tr More

  In order to study of qualitative and quantitative traits of landraces and improved cultivars of rice, a field experiment was conducted in a randomized complete block design with three replicaties in Sari Agricultural Sciences and Natural Resources University in 2011. Treatments were: three landraces including Tarom Mahali, Sange Tarom and Tarom Deilamani and nine improved cultivars including Partou, Jahesh, Danesh, Jelodar, Fajr, Sepidrood, Milad, Noksiah and R9. Results showed that rice genotypes had significant difference on all traits except for panicle length. The fertile tiller number per plant and filled grain number per panicle of improved cultivars were greater than landraces. But plant height of landraces was higher than improved cultivars. Cultivar of R9 had The highest number of grain per panicle and unfilled grain with number of 555.9 and 90 seed, respectively. Among genotypes, improved cultivars of Danesh and Jelodar had the maximum grain yield with 5395 and 5410 kg.ha-1, respectively. The longest grain before cooking was belonged to cv. Danesh, but the longest grain after cooking and the highest amylose content were belonged to cv. Tarom Mahali. The Cultivars of Tarom Mahali and Sange Tarom showed the highest amount of gel consistency. The gelatinization temperature for landraces and cultivars of Noksiah, Jahesh and R9 was medium (4-5 class) and for other cultivars was high (6-7 class). It was concluded that improved cultivars of Danesh and Jelodar had the higher quantitative yield and landraces of Tarom Mahali had the higher qualitative yield compared to other cultivars. Manuscript profile
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  3 - Effect of saline water and chemical fertilizers on nutrient uptake and yield of ajowan (Carum copticum (L.) C. B. Clarke)
  madine bizhani parviz yadollahi dehchechme M. Heidari M. Latifi M.R. Asgharipor M. Ramroodi
  20.1001.1.20085958.1394.7.22.11.5
  In order to evaluate nutrient uptake and yield of ajowan at saline conditions and application of inorganic and organic fertilizer an experiment was conducted as factorial randomized design with tree replications at Zabol University research greenhouse at 2011. Treatment More

  In order to evaluate nutrient uptake and yield of ajowan at saline conditions and application of inorganic and organic fertilizer an experiment was conducted as factorial randomized design with tree replications at Zabol University research greenhouse at 2011. Treatments included irrigation salinity at three levels: 1 (as control), 8 and 13 dS.m-1 and four fertilization systems including application of NPK at 80:40:30 kg ha-1, 40 ton of manure ha-1, NPK at 40:20:15 kg ha-1 plus 20 ton of manure ha-1 and no soil fertility. Results showed that the increase of dissolved salts decreases the uptake and concentrations of phosphorus, potassium and magnesium in the seed, however, had no significant effect on calcium concentration in plants. The reduced nutrient uptake in plants decreased 1000 seed weight, seed and essential oil yield and protein content. Although in severe stress conditions essential oil content increased by 12 percent compared to the control. As well as, results reveled that different fertilization systems significantly increased all measured traits except calcium concentration. Combination of organic and inorganic fertilizer was more effective from sole application, and combined application of organic and inorganic fertilizer increased seed yield by 11 percent compared with the control. Therefore it could be combined organic and inorganic fertilizer for improvement of ajowan cultivation. Manuscript profile
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  4 - Effect of ascorbic acid and sodium nitroprusside foliar spraying on yield and qualitative characteristics of summer squash (Cucurbita pepo) at different levels of drought stress
  Parviz Yadollahi Dehcheshmeh Mohammad Ali Javaheri Mohammad Reza Asgharipour
  20.1001.1.20085958.1397.10.35.9.0
  Today, application of anti-oxidant and plant growth regulators has been proposed to reducing the negative impacts of drought stress. Ascorbic acid and sodium nitroprusside are the substances that make plants resistant to biotic and abiotic stresses. In this study, the e More

  Today, application of anti-oxidant and plant growth regulators has been proposed to reducing the negative impacts of drought stress. Ascorbic acid and sodium nitroprusside are the substances that make plants resistant to biotic and abiotic stresses. In this study, the effect of drought stress, ascorbic acid and sodium nitroprusside foliar sprays were examined on the qualitative characteristics in summer squash plants. The experimental design was a split plot factorial with two irrigation regimes; irrigation at 75% FC and irrigation at 25% FC, as the main treatments, and combination of sodium nitroprusside at three levels of 0, 50 and M and ascorbic acid at three levels of 0, 10 and 20 mM at flowering stage as subplot that were applied with three replications. The experiment was conducted in 2011 at the Zabol University research farm in Zabol, south Iran. Deficit irrigation reduced seed oil content and chlorophyll a. Also delay irrigation decreased relative water content of leaves. Ascorbic acid spraying increased, chlorophyll a, chlorophyll b, total chlorophyll, protein and oil contents of leaves, but leaf relative water content decreased with the use of ascorbic acid. The concomitant use of 20 mM of ascorbic acid and 100 M of sodium nitroprusside achieved the greatest chlorophyll a, chlorophyll b, total chlorophyll, protein and oil contents and relative water content of leaves. Manuscript profile