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  • Open Access


    Biochar Application Improves the Drought Tolerance in Maize Seedlings

    A. Sattar1,*, A. Sher1,*, M. Ijaz1, M. Irfan2, M. Butt1, T. Abbas1, S. Hussain2, A. Abbas1, M. S. Ullah3, M. A. Cheema4

    Phyton-International Journal of Experimental Botany, Vol.88, No.4, pp. 379-388, 2019, DOI:10.32604/phyton.2019.04784

    Abstract Application of biochar to agricultural soils is mostly used to improve soil fertility. Experimental treatments were comprised of two factors: i) drought at two level, i.e., 80% and 40% water holding capacity (WHC) which was maintained on gravimetric basis ii) three levels of biochar i.e., control, 2 t ha-1 and 4 t ha-1 added to soil. Experimentation was done to examine potential of biochar application to enhance the growth attributes, water relations, photosynthetic pigments and antioxidants activities in maize (Zea mays L.) seedlings. Results of study revealed that biochar application increased the growth qualities (total seedlings biomass,… More >

  • Open Access


    Use of the pressure chamber and thermocouple psychrometers to determine the water relations of plant tissues

    Busso CA

    Phyton-International Journal of Experimental Botany, Vol.77, pp. 327-350, 2008, DOI:10.32604/phyton.2008.77.327

    Abstract Advantages, disadvantages and precautions of using the pressure chamber and thermocouple psychrometers for determinations of plant water potential, and osmotic and turgor pressures are discussed. Comparison of results obtained with both instruments will be influenced by the sampling technique, consistency in both sampling and measurement procedures, and errors inherent to the method itself. In-situ readings of either plant or soil water potential with thermocouple psychrometers are perhaps worthless, or worse (they may even be misleading). Use of thermocouple psychrometers is strictly limited to the laboratory where isothermal conditions can be obtained. The method to determine the More >

  • Open Access


    Nocturnal accumulation of titratable acidity in Tillandsia makoyana (Bromeliaceae), epiphytic bromeliad of the tropical dry forest

    Díaz-Álvarez EA1,2, AP Rojas-Cortés1,2, E de la Barrera1

    Phyton-International Journal of Experimental Botany, Vol.86, pp. 278-281, 2017, DOI:10.32604/phyton.2017.86.278

    Abstract The epiphytic bromeliad Tillandsia makoyana was studied to assess the contribution of the environmental factors, water, temperature, and light, to the expression of the Crassulacean acid metabolism. In particular, nocturnal titratable acidity accumulation and maximum leaf temperature were measured in response to watering and incident light. Plants that were watered and exposed to direct sunlight had the highest nocturnal accumulation of titratable acidity (25.52 ± 0.34 H+/m2), while those without irrigation and shaded showed a 59% reduction in their titratable acidity. Our results illustrated a rapid response of the photosynthetic activity to water availability in Tillandsia makoyana, a More >

  • Open Access


    Vermicompost and water stress effects on dry beans (Phaseolus vulgaris L.): productive parameters and water relations

    Aguilar-Benítez G1*, CB Peña-Valdivia2, R Castro-Rivera3, JP Lara-Ávila1, E Cruz-Crespo4, AN Rojas-Velázquez1

    Phyton-International Journal of Experimental Botany, Vol.86, pp. 28-39, 2017, DOI:10.32604/phyton.2017.86.028

    Abstract It is documented that vermicompost increases germination and productivity of crops, but little is known of its effect on plant physiological responses under soil water deficit. The aim of this study was to analyze the effect of vermicompost and irrigation interruption on stomatal conductance, gas exchange, and yield of common bean cultivars (drought tolerant -cv. 92 and drought susceptible-cv. 122). Plants were cultivated in unamended soil or soil amended with 1.5 and 3% of vermicompost, with irrigation during the whole cycle but irrigation interruption at the flowering stage. Changes in soil moisture, stomatal conductance (gs), transpiration… More >

  • Open Access


    Water relations and leaf growth rate of three Agropyron genotypes under water stress


    BIOCELL, Vol.26, No.3, pp. 309-317, 2002, DOI:10.32604/biocell.2002.26.309

    Abstract The effects of water stress on leaf water relations and growth are reported for three perennial tussock grass genotypes under glasshouse conditions. Studies were performed in genotypes El Palmar INTA and Selección Anguil of Agropyron scabrifolium (Döell) Parodi, and El Vizcachero of A. elongatum (Host) Beauv. Agropyron scabrifolium El Palmar INTA is native to a region with warm-temperate and humid climate without a dry season, and an average annual precipitation of 900 mm. Agropyron scabrifolium Selección Anguil comes from a region with a sub-humid, dry to semiarid climate and a mean annual precipitation of 600 mm. Agropyron elongatum is a… More >

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