List of Articles
-
Open Access Article
1 - Physiological and biochemical response of some grape cultivars to drought stress
Mojtaba gholizadeh mehdi Haddadinejad علی عبادی Ali Mohammadi TorkashvandIn order to investigate the effect of drought stress on the physiological and biochemical traits of six grape cultivars, a factorial experiment was conducted based on a completely randomized design with three replications under greenhouse conditions. In this experiment, MoreIn order to investigate the effect of drought stress on the physiological and biochemical traits of six grape cultivars, a factorial experiment was conducted based on a completely randomized design with three replications under greenhouse conditions. In this experiment, the treatments included six Khorasani and shirazi grape varieties (Askari, Khalili, Yaquti, Pikami, Turkmen 4 and Suzak) and four levels of drought stress (normal conditions (100% of the farm capacity), low stress (75% of the farm capacity), medium stress ( 50% of farm capacity) and severe stress treatment (25% of farm capacity). The results showed that physiological and biochemical traits increased significantly with increasing stress intensity. On the other hand, the traits of relative leaf water content, membrane stability index, amount of photosynthetic pigments, and total phenol content decreased significantly with increasing stress intensity. Among the cultivars studied, the Yaqouti cultivar showed more resistance to drought than other grape cultivars in terms of the studied indices. According to the results of this research, it seems that Yaghuti cultivar is more drought tolerant than other cultivars. Since this tolerance located in leaf via active mechanisms, it is necessary to carry out additional tests when using Yaghuti as rootstock for scion of grapevine. Manuscript profile -
Open Access Article
2 - Effect of foliar application of salicylic acid and zinc oxide on growth, photosynthetic pigments and antioxidant enzymes in tomato plants
fatemeh pezham Zahra Oraghi Ardebilli علیرضا لادن مقدم الهام دانائیThis study was conducted to investigate the growth and physiological responses of tomato (Solanum lycopersicum) plants to long-term foliar application of zinc oxide (ZnO) and salicylic acid (SA) in low concentration. This experiment was carried out under the pot conditi MoreThis study was conducted to investigate the growth and physiological responses of tomato (Solanum lycopersicum) plants to long-term foliar application of zinc oxide (ZnO) and salicylic acid (SA) in low concentration. This experiment was carried out under the pot conditions in cocopeat and perlite medium and Hoagland's nutrient solution was used to irrigate tomato seedlings. Tomato seedlings were sprayed with two concentrations (0 and 5 mg/l) zinc oxide and/or two dose (0 and 5 mg/l) of salicylic acid with three-day intervals during two months. Single and combined foliar application of salicylic acid and zinc oxide improved plant growth and fruit fresh weight. The applied treatments increased plant height, shoot fresh weight, root fresh weight, and fruit fresh weight. Individual and combined treatments of salicylic acid and zinc oxide also significantly increased the content of photosynthetic pigments, including chlorophyll a (Chla), Chlb, and carotenoids. A significant increase in the activity of catalase enzyme was recorded due to the foliar spray of zinc oxide and salicylic acid, especially the combined treatment. Peroxidase enzyme activity also showed an increasing trend in response to foliar application of zinc oxide and salicylic acid. Overall, this study provided physiological evidence on how the application of ZnO and salicylic acid in appropriate concentration can improve primary metabolism and antioxidant system. It is obvious that performing further researches, especially at molecular levels, can improve our knowledge in the field. Manuscript profile -
Open Access Article
3 - Studying the effect of chemical fertilizers on crop characteristics and the rate of contamination of rapeseed fields with cabbage wax aphid (Brevicoryne brassicae L.) in Lorestan province
مهدی ساکی جهانشیر شاکرمی امیر محسنی امین محسن لک مرجان ساکیThis study was carried out in order to investigate the effect of chemical fertilizers application on the amount of rapeseed infestation by wax aphid and the agricultural characteristics of rapeseed. Experiment was conducted as a three-factor factorial based on a randomi MoreThis study was carried out in order to investigate the effect of chemical fertilizers application on the amount of rapeseed infestation by wax aphid and the agricultural characteristics of rapeseed. Experiment was conducted as a three-factor factorial based on a randomized complete block design in three replications. The experimental factors include the application of nitrogen fertilizer at three levels (175, 250 and 325 kg.ha-1) from the source of urea fertilizer, phosphorus fertilizer at three levels (70, 100 and 130 kg.ha-1) from the source of triple superphosphate fertilizer and sulfur fertilizer in There were two levels (25 and 50 kg.ha-1). The results showed that increasing the application rate of nitrogen fertilizer led to a decrease in the pollution index, the percentage of infected plants and the length of the infected stem, as a result of which the grain yield and biological performance increased. The results showed that the use of higher amounts of chemical fertilizers led to an increase in the components of rape seed yield, so that the highest number of seeds per pod in the treatment of application of 100 kg.ha-1 phosphorus along with 25 kg.ha-1 sulfur and the highest 1000 seed weight was obtained in the application treatment of 130 kg.ha-1 of phosphorus along with 50 kg.ha-1 of sulfur. The increase in the amount of grain yield components led to an increase in grain yield and biological yield, so that the highest amount of grain yield and biological yield was 3804 and 12836 kg.ha-1, respectively, in the treatment of application of 325 kg.ha-1 of nitrogen fertilizer. Based on the results of this study, it was found that the application of 325 kg.ha-1 nitrogen fertilizer reduced the rate of contamination of canola with wax aphid and increased the grain yield, which can be recommended for the farmers of the region in the cultivation of canola Manuscript profile -
Open Access Article
4 - The Effect of Drought Stress and Plant Density on Yield and Yield Components of Irrigated Wheat Cultivars (Triticum aestivum L.) in Temperate Region of Lorestan Province
عزت اله نباتی امین فرنیا مجتبی جعفرزاده کنارسری شهرام نخجوانThis study was conducted to investigate the effect of drought stress and plant population on re-transfer of materials and yield and some yield components of wheat cultivars in Dorud and Boroujerd regions located in Lorestan province in the crop year 2019-20. The experim MoreThis study was conducted to investigate the effect of drought stress and plant population on re-transfer of materials and yield and some yield components of wheat cultivars in Dorud and Boroujerd regions located in Lorestan province in the crop year 2019-20. The experiment was performed as a factorial split-plot in a randomized complete block design with three replications. Drought stress treatment (in three levels of control, irrigation to flowering and irrigation to milk development) was plant density treatments (300, 400, 500 and 600 plants per square meter) and cultivar (Mihan and Baharan) were stand in sub plots. The results showed that drought stress, density and cultivar treatments had an effect on grain yield components and the interaction effect of stress * plant density on spike length and leaf area was significant. Also, the interaction effect of location * stress * cultivar on plant height, spike length and 1000-seed weight was significant. The highest plant height was obtained in irrigation treatment up to the milk development stage and Mihan cultivar cultivated in Boroujerd. The spike length in irrigation treatment up to flowering stage and at the level of 600 plants / m2 was higher than other experimental treatments. The highest number of spike per plant was in the control treatment. The highest 1000-seed weight was obtained in Mihan cultivar at the level of complete irrigation treatment in Dorud region and the highest grain yield was obtained in full irrigation treatment. Manuscript profile