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      • Open Access Article

        1 - Effect of Different Levels of Selenium and Sulfur on Growth and Yield of Three Cultivars of Spring Wheat (Triticum aestivum L.)
        O. Bakhshi Rad M. Moez Ardalan A. Reyhanitabar
        Selenium is an essential element for human and animal heath, with antioxidant and anti-cancer properties. Although, researchers have found it to increase vegetative growth. It is not considered to be essential for higher plants. In order to evaluate the effect of seleni More
        Selenium is an essential element for human and animal heath, with antioxidant and anti-cancer properties. Although, researchers have found it to increase vegetative growth. It is not considered to be essential for higher plants. In order to evaluate the effect of selenium and sulfur on growth and yield of three cultivars of spring wheat a factorial experiment based on randomized complete  block design with three replicates was conducted in pots at the Agricultural Faculty of Islamic Azad University, Tabriz Branch, Iran, during 2009-2010. Treatments were 3 cultivars of spring wheat (Karaj, Pishtaz and Sepahan), 5 levels of selenium (0, 0.2, 2, 5 and 10 mg/kg) in the form of sodium selenate used and 4 levels of elemental sulfur (0, 50, 100 and 150 mg/kg). Results showed that 0.2 and 2 mg Se/kg of soil increased growth and yield in all three cultivars, but 5 and 10 mg Se/kg of soil without sulfur, caused toxicity symptoms, white spots on leaf margins, while its toxicity decreased when 50 and 100 mg S/kg of soil was used and toxicity disappeared by using 150 mg S/kg of soil. This indicates that low levels of Se may have positive effects on growth and yield of wheat through meaningful interaction between Se and sulfur. Manuscript profile
      • Open Access Article

        2 - Effect of salicylic acid foliar application on flowering and growth characteristics of lantana (Lantana camara Linn.) under salinity stress
        Maryam Dehestani-Ardakani Parisa Ghatei Ali Momenpour Jalal Gholamnezhad Zahra Fakharipour
        Lantana camara Linn. is a flowering ornamental plant belonging to family Verbenaceae. The aim of the present study was to investigate the effect of salicylic acid foliar application on flowering improvement and growth characteristics of lantana under salinity stress. In More
        Lantana camara Linn. is a flowering ornamental plant belonging to family Verbenaceae. The aim of the present study was to investigate the effect of salicylic acid foliar application on flowering improvement and growth characteristics of lantana under salinity stress. In a factorial experiment and completely randomized design (CRD), three levels of SA (0, 0.5 and 1mM) and five levels of salinity (0.5, 3, 5, 7 and 9 dS.m-1) were applied. The results indicated that increasing salinity levels from 0.5 to 9 dS.m-1 significantly reduced all studied growth parameters levels, chlorophyll contents and potassium uptake. While Na+uptake, Na+/K+ and ion leakage were increased relative to control. Also, the results indicated that the salicylic acid significantly increased plant growth and physiological traits. Application of salicylic acid (0.5 mM) improved vegetative, flowering growth and nutrient uptake under salt stress. At salinity level of 9 dS m-1, application of 1mM salicylic acid increased the height of the main branch and the number of flowers by3.22 and 2.14 times, respectively, compared to the control and decreased the sodium uptake by 2.46 times. At the same level of salinity, treatment of plants by 0.5mM salicylic acid increased plant height, stem diameter, increased diameter of main branch, number of flowers and fresh weight of flowers by 70.64%, 2.15, 2.14 and 5.8 times respectively, in compare to the control. Considering that the plants maintained their vegetative growth and flowering well up to salinity level of 7dS.m-1, it seems that the lantana is able to tolerate salinity. In general, It seems that under high salinity levels, salicylic acid (0.5 mM) was the most effective treatment for mitigating the deleterious effect of salt stress in lantana plants. Manuscript profile
      • Open Access Article

        3 - Effects of magnetically - treated water on vegetative growth period, development of gynoecium and anther, and ultrastructure of pollen grains of lentil (Lens culinaris L.)
        nafise Azimi ahmad Majd taher Nejadsattari faezeh Ghanati sedigheh Arbabian
        Water is the most abundant component of plant cells and as a diamagnetic molecule can be affected by magnetic field. The present study was conducted in order to evaluate the effects of magneticallytreated water on speed of vegetative growth and stages of reproductive or More
        Water is the most abundant component of plant cells and as a diamagnetic molecule can be affected by magnetic field. The present study was conducted in order to evaluate the effects of magneticallytreated water on speed of vegetative growth and stages of reproductive organs development and Ultrastructure of Pollen grain of lentil (Lens culinaris L.). For this aim lentil seeds were cultured in green house and were irrigated either with tap water (control group), or magnetically-treated water (tap water which was passed through a magnetic field of 110 mT). Growth and development of male and female generative organs were studied via cytological and histological routine methods and the ultrastructure of pollen grains was studied by scanning electron microscopy. Results showed irrigation with magnetically-treated water increased the speed of lentil flowering. In developmental stages of anther and gynoecium showed no difference between control and treated plants. The apparent shape of the megaspor mother cell and egg cell, was the same in both groups. Lentil pollen grain is tricolpate with reticulate architecture. The decorations of pollen grains were thicker and wider in the plants irrigated with magnetically-treated water, compared to the control plants. Number of pollen grain had no difference between groups. Totally irrigation with magnetically-treated water increases the speed of flowering and thus reduces the growth period is in lentil. Therefore, irrigated with magneticallytreated water can be a big help to reduce the water used to irrigate the crops. Manuscript profile
      • Open Access Article

        4 - Effect of irrigation interval, humic acid and sulfur fertilizer on morphological and yield traits of fenugreek (Trigonella foenum-gracum L.)
        Seyyed Gholamreza Moosavi
        In order to study the effect of irrigation interval, humic acid and sulfur fertilizer on some morphological and yield traits of fenugreek, a split-plot factorial experiment based on randomized complete blocks design with three replications was conducted at research fiel More
        In order to study the effect of irrigation interval, humic acid and sulfur fertilizer on some morphological and yield traits of fenugreek, a split-plot factorial experiment based on randomized complete blocks design with three replications was conducted at research field of Islamic Azad University, branch of Birjand in 2013. The main plots were 5 and 10 days irrigation intervals. The sub-plots were combination of two rates of humic acid (0 and 10 L.ha-1) and four types of sulfur fertilizer (control or no application, bentonit containing, humic containing and urea with sulfur cover). In this study plant height, branch number of main stem, pod length, 1000–seed weight, seed yield, biological yield and harvest index of seed were evaluated. The results showed that increasing irrigation interval from 5 to 10 days significantly reduced plant height, pod length, 1000–seed weight, seed yield, biological yield and harvest index of seed by 19.9, 20.9, 34.6, 37.4, 34.4 and 16.7%, respectively. Also humic acid application (10 L/ha) significantly increased all measured traits by 10.3, 13.5, 15.5, 42.8, 47.7, 85.2 and 42%, respectively. The effect of sulfur fertilizer on the measured traits was not significant. Also, interaction of irrigation and humic acid was significant on plant height, 1000–seed weight, biological yield and harvest index. In general 5 days irrigation interval and acid humic application (10 L.ha-1) is recommended for fenugreek cultivation in Birjand. Manuscript profile
      • Open Access Article

        5 - Selection of Pecan Cultivars Aiming to Release Vigorous and Heat Stress Tolerant Rootstocks
        Fereidoon Ajam Gard
      • Open Access Article

        6 - Genetic Analysis of Early Growth Characteristics in a Pistachio (Pistacia vera L.) Population Raised under Greenhouse Conditions for use in Breeding Program
        Hossein Dashti Asghar Rahimi Seyed Ahmad Hosseini Shirin Davoodian Mozhgan Gholizadeh Vazvani
      • Open Access Article

        7 - Physiological, Biochemical, and Developmental Responses of some Pistachio Genotypes under Drought Stress
        Mostafa Ghasemi Shiva Ghasemi Mehdi Mohammadi-Moghadam Saeid Kashanizadeh Mansoore Shamili
        Pistachio is one of the economic nut fruits in Iran. Water limitation is the most restrictive factor for its production. To overcome the water scarcity crisis, introducing drought-tolerant rootstocks is among the crucial breeding strategies. To investigate the drought t More
        Pistachio is one of the economic nut fruits in Iran. Water limitation is the most restrictive factor for its production. To overcome the water scarcity crisis, introducing drought-tolerant rootstocks is among the crucial breeding strategies. To investigate the drought tolerance of five Qazvin native pistachio genotypes, an experiment was carried out as a factorial experiment in a completely randomized design with four replications in the greenhouse conditions. The factors were pistachio genotypes (Madari, KalKhandan, Kalehbozi, Sefid, and Ghermez) and irrigation regime (normal conditions and drought stress). The highest relative water content under drought irrigation conditions belonged to the Sefid (59.99%), and Ghermez (59.09%) genotypes. The lowest value (54.68%) belonged to the Madari genotype. The highest electrolyte leakage under drought irrigation conditions belonged to the Madari genotype (55.75%). The lowest electrolyte leakage (42.44%) belonged to the Sefid genotype. Under drought stress, the highest amount of chlorophyll a (2.12 mg g-1 fresh weight), total chlorophyll (3.051 mg g-1 fresh weight), and carotenoid (2.38 mg g-1 fresh weight) was observed in Ghermez genotype. In contrast, the highest amount of chlorophyll b (1.34 mg g-1 fresh weight) was observed in the Sefid genotype. The lowest amounts of chlorophyll and carotenoid in the drought stress belonged to the Madari genotype. According to the results, the Ghermez and Sefid genotypes with lower electrolyte leakage and higher relative water content, chlorophyll, carotenoid, and biomass under water stress, were the more drought-tolerant genotypes. Madari and KalKhandan genotypes with higher electrolyte leakage and lower relative leaf water content, chlorophyll, and biomass were the most drought-sensitive genotypes. Manuscript profile
      • Open Access Article

        8 - Foliar Application of Arginine Improves Vegetative and Reproductive Characteristics of Bearing Pistachio Trees
        Ali Tajabadipour Mohammad Reza Fattahi Moghaddam Zabihollah Zamani Fatemeh Nasibi Hossein Hokmabadi
      • Open Access Article

        9 - Waterlogging period duration and temperature effects on glycolytic-fermentative enzymes activity in wheat seedling
        M. Tahmasebi S. Galeshi A. Soltani H. Sadeghipour A. Ebrahimi
        Water logging stress has high destroyer effect on quality and quantity of crop production. This experiment was carried out to investigate alcohol dehydrogenize (ADH) and fructose- 1,6- bisphosphate aldolase (FBPaldolase) activities in wheat leaf (N8019) in vegetative gr More
        Water logging stress has high destroyer effect on quality and quantity of crop production. This experiment was carried out to investigate alcohol dehydrogenize (ADH) and fructose- 1,6- bisphosphate aldolase (FBPaldolase) activities in wheat leaf (N8019) in vegetative growth stage (4-5 leaved) under water logging duration effects in different temperature in the form of combined analysis design with CRD arrangement in 4 levels of water logging period (0, 24, 48 and 96 hour) and 3 levels of temperature (5, 10 and 20 ˚C) in tetraplicates. The results indicated that the effects temperature and water logging duration and their interaction were significant on ADH and FBPaldolase activities at 1 % level. With increasing water logging period, ADH and FBPaldolase activities increased in 5 and 10ºC. Under 20ºC, both enzyme activities increased until 48h of water logging but both enzyme activities increased significantly when water logging duration increased up to 96 h. Manuscript profile