Shi G¹, ZY Liu¹, T Baoyin¹, J Sun², JJ Duan³, XL Li³, GF Yang⁴

Phyton-International Journal of Experimental Botany, Vol.87, pp. 236-241, 2018, DOI:10.32604/phyton.2018.87.236

Abstract Plant functional traits and their effects on rangeland ecosystem function have received much attention by ecologists. However, the importance of functional traits and the interactive effects of grazing exclusion and climate are poorly understood. This study, therefore, aimed to analyse the response of Leymus chinensis functional traits in long-term grazing exclusion in different habitats (rainless typical steppe and rainy meadow steppe). This study showed that although the sensitivity and variability of different traits were similar in two steppe habitats, phenotypic plasticity of L. chinensis in meadow steppe was significantly higher than typical steppes. With the increased degree More >

Moya ME^1,2, AA Galussi^1,2, N Sattler², MS Fontana², YG Gillij^1,2

Phyton-International Journal of Experimental Botany, Vol.87, pp. 231-235, 2018, DOI:10.32604/phyton.2018.87.231

Abstract The objective of this study was to analyze the anatomy of stems and roots of Mnesithea selloana. Free hand cross sections were made from fresh material of reproductive stems and adventitious roots; they were colored with safranin and mounted on glycerin jelly. Observations were made using an Olympus CH2 light microscope and photographed. In cross section, the stems were circular towards the distal end of the synflorescence and semicircular toward the proximal end, and have two ribs. A uniseriate, continuous epidermis presenting a smooth and thick cuticle and no hairs was observed. Parenchyma cells increased in… More >

Naz N¹, F Durrani¹, Z Shah², NA Khan¹, I Ullah¹

Phyton-International Journal of Experimental Botany, Vol.87, pp. 225-230, 2018, DOI:10.32604/phyton.2018.87.225

Abstract The progress and development of crops like potato are harmfully affected by increased heat stress throughout the world. Stress caused by increased heat adversely affects germination and seedling growth which result in a reduced crop development and yield. The present research was carried out to know the influence of heat stress on growth indices and physiological processes of potato (Solanum tuberosum L.). The heat stresses C- Control (25 °C); T1-45 °C, and T2-40 °C were applied in separate growth chambers to the plants, after 25 days from their germination. Increased heat stress considerably decreased the chlorophyll More >

Vázquez Núñez E¹, S Awate², MC Carrasco Monrroy³

Phyton-International Journal of Experimental Botany, Vol.87, pp. 216-224, 2018, DOI:10.32604/phyton.2018.87.216

Abstract The effect of scarification methods and silver nanoparticles on plantlets growth were tested on seeds of plants belonging to the Fabaceae family (Prosopis laevigata, Acacia farnesiana and Erythrina americana), which are predominant species in semi-arid ecosystems in Mexico. The scarification methods consisted in using coarse sand paper and two different concentrations of sulphuric acid (H₂SO₄ 98% and H₂SO₄ 50%); immersion of seeds in distilled water was used as a control. The percentage of germination was calculated and the Kotowski´s coefficient was determined. After scarification, the seeds were immersed in silver nanoparticles solutions at different concentrations i.e., 100 mg/L, More >

Abud-Archila M¹, AK Espinosa-Arrioja¹, T González-Soto², VF Gutiérrez-Oliva¹, V Ruíz-Valdiviezo¹, D González-Mendoza², L Rodríguez-Hernández³, FA Gutiérrez-Miceli¹

Phyton-International Journal of Experimental Botany, Vol.87, pp. 209-215, 2018, DOI:10.32604/phyton.2018.87.209

Abstract The aim of this investigation was to analyze the effect of vermicompost and phosphate rock on plant growth and biochemical responses of Moringa oleifera exposed to water deficit and waterlogging conditions. Treatments included 152 g of vermicompost (V) and 1.3 g of phosphate rock (PR) added to each cultivation bag. Control was prepared with 2.3 g of urea. All treatments were irrigated under different watering conditions [water deficit: irrigated at 20% water holding capacity (WHC); control (40% WHC) and waterlogging (60% WHC)]. The overall average in plant height was 90, 86 and 68 cm, whereas chlorophyll… More >

Hernández LF^1,2, PM Bellés³, MA Bidegain^4,5, PD Postemsky⁴

Phyton-International Journal of Experimental Botany, Vol.87, pp. 198-208, 2018, DOI:10.32604/phyton.2018.87.198

Abstract Absence or underdevelopment of sunflower fruits come usually from failure in fertilization, stresses as well as physiological and morphological defects in the ovary. Thigmomorphogenesis has never been included as a possible cause. We have previously shown that a 2-3 day fertilization shift can occur between neighboring florets in the sunflower capitulum. It is proposed here that those ovaries with advanced fertilization can generate a significant radial and axial compressive stress on ovaries with delayed fertilization. This mechanical stimulus could be strong enough to trigger a thigmo response that affects further ovary development. In vivo tests… More >

Qayyum S¹, SA Majid¹, A Bibi², A Ulfat¹, K Khanum¹, A Munir¹, S Nisar¹, S Aziz¹, N Mumtaz¹

Phyton-International Journal of Experimental Botany, Vol.87, pp. 191-197, 2018, DOI:10.32604/phyton.2018.87.191

Abstract Maize (Zea mays L., the third most important cereal crop after wheat and rice, is the major kharif (summer) crop of rainfed areas in Pakistan. The yield per hectare and total production of maize in Pakistan is low versus an exponentially increasing population. The objective of this work was to study the interactive effects of phytohormones [Gibberellic acid (GA), Sodium nitroprusside (SNP), Abscicic acid (ABA) and kinetin (KIN)] on morphological, physiological and biochemical parameters during the germination of maize seeds. Seeds were presoaked in different hormones, separately or in combinations. Priming with GA+SNP+ABA+KIN enhanced the total More >

Zepeda-Guzmán S¹, M Gómez-Romero², C Sosa-Aguirre¹, J Villegas¹

Phyton-International Journal of Experimental Botany, Vol.87, pp. 183-190, 2018, DOI:10.32604/phyton.2018.87.183

Abstract Changes in root architecture are a strategy used by plants to explore the soil for available resources. The presence of beneficial microorganisms in the rhizosphere as well as plant growth regulators can cause changes in root development and promote the availability of water and nutrients. The effect of microorganisms or growth regulators on plant growth has been tested, but little is known about the effect they have on the architecture of the root of Hordeum vulgare L. Therefore the objective of this study was to evaluate the effect of the application of Rhizoglomus intraradices, Azospirillum brasilense, quercetin… More >

Bibi A¹, SA Majid², A Munir³, A Ulfat⁴, G Javed², S Khatoon², N Azhar², S Ashraf², S Aziz², N Mumtaz²

Phyton-International Journal of Experimental Botany, Vol.87, pp. 178-182, 2018, DOI:10.32604/phyton.2018.87.178

Abstract Chilling stress on cereal crops is the major form of cold stress that appears in some regions, and causes significant losses by depressing seed germination, and seedling growth and establishment. Hormones have the ability to reduce the stress effects in crops by various mechanisms. To determine the role of nitric oxide in mitigating chilling damages in wheat, two trials were conducted and seven wheat varieties were used. Seeds of wheat varieties after priming using three different concentrations (0, 10^-4, 10^-5 M) of sodium nitroprusside as nitric oxide donor were grown under two growth conditions (control, 4… More >

Calixto-Muñoz JJ¹, MD Mariezcurrena-Berasain¹, AT Gutiérrez-Ibáñez¹, A Balbuena-Melgarejo¹, S Rajaram², ED Archundia-Velarde¹, DL Martínez-Pardo³, DL Pinzón-Martínez¹

Phyton-International Journal of Experimental Botany, Vol.87, pp. 171-177, 2018, DOI:10.32604/phyton.2018.87.171

Abstract Wheat is one of the most important protein sources for human beings. Several food products are elaborated from this cereal, such as bread. Mexican wheat breeding programs are focused on to identify those genotypes with high yields and bread quality. Therefore, the aim of this study was to evaluate the environmental effects over the Physicochemical and Bromatological quality parameters of Cal Blanco F2011, Matchett F2011 and RSM-Norman F2008 wheats sown at the experimental fields at Mexicali, Baja California, Querendaro, Michoacán and Tarimoro, Guanajuato, Mexico during the autumn-winter growing cycle for two consecutive years (2014-2016) under… More >