Home / Journals / PHYTON / Vol.87, 2018
  • Open Access

    ARTICLE

    Species of Trichoderma antagonistic to the root knot nematode (Meloidogyne incognita) in habanero pepper

    Herrera-Parra E1,2, J Ramos-Zapata1, J Cristóbal-Alejo3, J Tun-Suarez3, A Reyes-Ramírez3
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 7-13, 2018, DOI:10.32604/phyton.2018.87.007
    Abstract The root knot nematode Meloidogyne spp. is an important endoparasite limiting the cultivation of horticultural species and affecting the plants of at least 3000 species, including grasses, vegetables, ornamentals, fruit and forest. The aim of this study was to estimate the potential of three species of Trichoderma as antagonists of M. incognita in plants of Capsicum chinense under greenhouse conditions. A bioassay was established with plants of C. chinense previously inoculated with Trichoderma spp. and transplanted to pots with sterile substrate; the plants were subsequently inoculated with 300 infective second-stage larvae (J2) and 1000 larvae eggs of M. incognita. A… More >

  • Open Access

    ARTICLE

    Changes in soil phosphorus fractions caused by cropping without nutrient reposition. A case study

    Barresi O1,2, VM Chiocchio1,2, RS Lavado2
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 14-17, 2018, DOI:10.32604/phyton.2018.87.014
    Abstract Previous studies in soils of the Pampas region indicate the prevalence of calcium phosphates within the very complex mix of phosphorus (P) compounds in the soils. We studied the changes in P fractions in a punctual situation in the Pampas region. The sampling was carried out in a farm located near the city of Junín (-34.585; -60.9589) and the soil was Junín series Typic Hapludoll. The farm was devoted to grazing and sporadic crops, but from the last 30 years changed to continuous agriculture. At no time fertilization matched nutrients removal by crops. The soil P fractions were determined using… More >

  • Open Access

    ARTICLE

    Effect of gibberellic acid on postharvest of sunflower and its potassium fertilization in alkaline soil

    Díaz-López E1, A Morales-Ruíz1, A Olivar-Hernández1, HR Bravo-Delgado2, JM Loeza-Corte3
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 18-24, 2018, DOI:10.32604/phyton.2018.87.018
    Abstract Sunflower is a crop that is used as ornamental, oleaginous, forage, and currently as a bioremediation plant, of hard water affected soils. For this reason, the main objective of this investigation was to study the effect of potassium fertilization on yield under field conditions, and the effect of gibberellic acid (GA3), at postharvest of inflorescences. Two experiments were established, under field and laboratory conditions. In the field experiment, four levels of potassium, 0, 50, 100 and 150 kg/ha were evaluated, under a randomized complete block design and four replicates (4×4) = 16 experimental units. The variables evaluated were agronomic and… More >

  • Open Access

    ARTICLE

    Seed inoculation with Pseudomonas fluorescens and Pseudomonas syringae enhanced maize growth in a compacted saline-sodic soil

    Zafar-ul-Hye M1, A Nasir1, M Aon1, S Hussain1, M Ahmad2, I Naz1
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 25-31, 2018, DOI:10.32604/phyton.2018.87.025
    Abstract Abiotic stresses like salt stress and soil compaction are responsible for increased ethylene production which may adversely affect crop growth. A field experiment was conducted to evaluate the response of seed inoculation with ACC-deaminase containing rhizobacteria (Pseudomonas fluorescens and Pseudomonas syringae) in the presence of recommended or half of a recommended rate of inorganic fertilizers at different growth stages of fodder maize in a compacted saline-sodic soil. At both fertilizer rates, seed inoculation with P. fluorescens and P. syringae significantly improved all growth parameters over the control treatment. After 30, 60 and 75 days of sowing, treatment with recommended NPK… More >

  • Open Access

    ARTICLE

    Potential spatial expansion of Ulmus macrocarpa population in Keerqin sandy lands, China

    Jianar A, JH Yuan, YF Yang
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 32-39, 2018, DOI:10.32604/phyton.2018.87.032
    Abstract Ulmus macrocarpa Hance can form monodominant woodlands in the semiarid Keerqin sandy lands, China. Methods of sampling at meter intervals from the bases of trees at the woodland edges and isolated trees, respectively, were employed along vertical sections in different directions. Using statistical methods based on the density function of the Weibull distribution, the patterns of seed dispersal and the spatial expansion response of U. macrocarpa, which is a typical anemochorous plant, were analyzed. Although as an effect of the wind direction varying owing to the monsoon, there were differences in the degree of dispersal of seeds in terms of… More >

  • Open Access

    REVIEW

    Impacts of sewage irrigation on soil properties of a farmland in China: A review

    Li QK1, J Tang2, T Wang3, D Wu2, CA Busso4, RF Jiao2, XJ Ren2
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 40-50, 2018, DOI:10.32604/phyton.2018.87.040
    Abstract Fresh water is a valuable nonrenewable resource and plays an important role in maintaining economic and social development. Considering its large population and consumption potential, water resource deficits will certainly not allow a sustainable development of basic industries in China in the near future. Application of sewage irrigation, to some extent, was regarded as an alternative way to solve the problem of agricultural water shortage in some areas (such as North China). However, accompanied with an extensive implementation of sewage irrigation, some problems with sewage irrigation became gradually obvious in agriculture, especially those related with pollution and destruction of farmlands.… More >

  • Open Access

    ARTICLE

    Root traits and arbuscular mycorrhiza on perennial grasses exposed to defoliation after a controlled burning

    Ithurrart LS1,2, CA Busso1,2, YA Torres1,3, DV Peláez1,2,3, H Giorgetti4, G Rodríguez4, ML Ambrosino2,5
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 51-59, 2018, DOI:10.32604/phyton.2018.87.051
    Abstract Plant competition for soil resources is common in semiarid rangelands. Plants have various, alternative mechanisms to deal with soil resource acquisition. They include (1) length, weight and proliferation of roots, (2) root length density, and (3) root colonization by arbuscular mycorrhiza. In rangelands of Argentina, plants are exposed to herbivory after natural fires. As a result, knowledge on how these disturbances impact root traits is important for outlining guidelines focused on rangeland management and improvement. Our aim was to analyze the effects of defoliation after a controlled burning on root traits (1) to (3) on two preferred (Poa ligularis and… More >

  • Open Access

    ARTICLE

    Morphological diversity of wild and semi-wild chili populations of Tabasco and the north of Chiapas States, Mexico

    Gálvez Muñoz YA1, E Martínez Moreno2, S Ramírez Vera2, L Latournerie Moreno3, JM Lesher Gordillo1, G Castañón Nájera1*
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 60-67, 2018, DOI:10.32604/phyton.2018.87.060
    Abstract The research was conducted with the aim to identify the variability in situ of wild and semi-wild morphotypes of Capsicum spp. that were found growing in different places of Tabasco and the north of Chiapas States. Morphotypes included “Amashito” (five types), “Pico de paloma” (two types), “Garbanzo”, “Ojo de sapo”, “Ojo de cangrejo”, “Colmillo de lagarto” and “Corazón de pollo”. Such characterization is important because there is an extensive variability of forms cultivated in the country, resulting from a wide range of agroecological diversity as well as diverse forms, colours, flavors and sizes that constitute a valuable collection of genes… More >

  • Open Access

    ARTICLE

    In vitro antiviral activity and phytochemical screen in the extracts of peels from four species of tropical fruits collected in Merida Yucatan, Mexico

    Chel-Guerrero LD1, R Gómez-Cansino2, SL Gúzman-Gutierrez3, MG Campos-Lara4, E Saury-Duch1, F Díaz de León Sánchez5, R Reyes-Chilpa6, JA Mendoza-Espinoza7
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 68-71, 2018, DOI:10.32604/phyton.2018.87.068
    Abstract The objective of this study was to investigate extracts from the peels of Annona squamosa L. (purple sugar apple), Annona reticulata L. (custard apple), Chrysophyllum cainito L. (green star apple), and Melicoccus bijugatus Jacq. (mamoncillo), as potential sources of anti-HIV-1 agents. Methanolic extracts from the peels of the aforementioned tropical fruits were obtained by maceration. Antiviral activity was evaluated through HIV-1 RT inhibition by extracts, using a non-radioactive immuno/colorimetric assay (Lenti RT Activity Assay, Cavidi Tech). Assay was performed according to the protocol provided by the manufacturer. Extracts from the peels of A. squamosa, A. reticulata, and C. cainito showed… More >

  • Open Access

    ARTICLE

    Molecular biology techniques as new alternatives for medicinal plant identification

    Villa-Hernández JM1, B García-Ocón2, E del C Sierra-Palacios2, C Pelayo-Zaldivar3, F Díaz de León-Sánchez1, LJ Pérez-Flores1, JA Mendoza-Espinoza2
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 72-78, 2018, DOI:10.32604/phyton.2018.87.072
    Abstract Mexico bears witness to a long-standing tradition in the use of plants for medicinal purposes; nevertheless, standardized methodological approaches for the proper identification of these are still needed. The problem is especially noticeable during the validation of ingredients in herbal preparations, as so many of them are sold as powders. It is for these reasons that the present study aims to compare the results of classic taxonomical assessments with those obtained using more modern molecular techniques (e.g. PCR-amplified 18S ribosomal RNA gene analysis) in one ethnobotanical case-study carried out in the “Desierto de los Leones” National Park in Mexico City,… More >

  • Open Access

    ARTICLE

    Potential antioxidant and toxicological activity of the essential oil of Rhaphiodon echinus (Nees & Mart) Schauer (Lamiaceae): morphoanatomy and polyphenolic composition of its extracts

    Rodrigues Costa A1,2, PS Pereira3, MK Alves de Sousa1,2, FC Rodrigues5, VR Duarte Mendes1, KR Rodrigues Lima1, L Marivando Barros1,4, CM Rocha Sousa1, MS Alcântara1, AB Leite Cavalcante4, R Cruz Macedo5, JP Kamdem3, AE Duarte1,2
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 79-86, 2018, DOI:10.32604/phyton.2018.87.079
    Abstract The species Rhaphiodon echinus, known as betonica or creeping mint, is considered an infesting plant species, typical of the caatinga biome. Morphoanatomy is a very important tool to study the structure of plants, both its external and internal morphology, opening the knowledge about the production of secondary metabolites. These compounds are of great importance for scientific research, which may present themselves as the best antioxidants. Taking into account a lack of data in the literature on the essential oil of R. echinus, this study aimed to demonstrate its antioxidant activity and toxicity. In order to test this hypothesis, tests were… More >

  • Open Access

    ARTICLE

    Molecular differentiation of Xoconostle (Opuntia spp.) using AFLP molecular markers

    García-Zambrano EA1, MC Ojeda-Zacarías1, JG Gutiérrez-Soto1, SR Sinagawa-García1, A Gutiérrez-Díez1, J Martínez-de la Cerda1, JA Pedroza-Flores1, C Gallegos-Vázquez2, JI García-Zambrano3
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 87-93, 2018, DOI:10.32604/phyton.2018.87.087
    Abstract The technologies based on molecular markers of DNA are the most advanced and possibly the most effective and accurate means to identify genetic variation. The objective of this study was to use molecular genetic markers namely AFLP as a tool for the molecular differentiation of 36 accessions of xoconostle collected in the Centro Regional Universitario Centro Norte of the Universidad Autónoma de Chapingo (CRUCEN-UACh.). DNA extraction was performed by the method of cellular ruptor using FastDNA® Kit, and quantification of purity and yield of DNA was carried out through the Nanodrop 2000. It was observed that the DNA concentrations ranged… More >

  • Open Access

    ARTICLE

    Protocol for the reduction of costs in habanero chili (Capsicum chinense Jacq.) micropropagation

    Jimarez-Montiel MJ1, A Robledo-Paz1, VM Ordaz-Chaparro2, LI Trejo-Tellez2, JC Molina-Moreno1
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 94-104, 2018, DOI:10.32604/phyton.2018.87.094
    Abstract An alternative method for improving the production of habanero chili is the tissue culture technique; however, the gelling agent, the high salt and sucrose concentrations used in the culture media raise production costs and limit the adaptation of the regenerated plants to greenhouse or field conditions. In this study, the effect of the substrates perlite-coconut fiber, coconut fiber-volcanic rock, vermiculite-perlite, and perlite-volcanic rock in conjunction with various culture media in in vitro plant regeneration from embryos was evaluated. The differentiation of adventitious shoots on substrates was scarcely observed or non-existent. Inducing the formation of shoots on agar and their development… More >

  • Open Access

    ARTICLE

    Somatic embryogenesis induction from immature embryos of Sorghum bicolor L. (Moench)

    Espinoza-Sánchez EA1, YA Sánchez-Peña2, JA Torres-Castillo3, EA García-Zambrano2, JE Treviño Ramírez2, F Zavala-García2, SR Sinagawa-García2
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 105-112, 2018, DOI:10.32604/phyton.2018.87.105
    Abstract In this study, we established an in vitro regeneration system from immature embryos of four varieties of Sweet Sorghum with biotechnological potential. A total of 17 treatments were assesses in the induction of somatic embryogenic calli. We analyzed the effect of Murashige y Skoog media supplemented with different concentrations of plant growth regulators such as auxins and cytokinins. The callus induction response was evaluated using three immature embryos development stages and based on the number of embryos with callus induction. Different responses were observed in the embryos depending of the embryo age, culture condition, media composition and variety. The results… More >

  • Open Access

    ARTICLE

    Utility of taxonomic unit and life form in the analysis of plant diversity patterns in a temperate meadow steppe, China

    Han DY1,2, YF Yang2
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 113-122, 2018, DOI:10.32604/phyton.2018.87.113
    Abstract Rapid and precise assessment of biodiversity is a central issue in conservation biology and biodiversity science. Higher taxonomic units and life form-based morphospecies were utilised to assess plant diversity patterns at the habitat scale in temperate meadow steppe, Songnen Plain, China. Patch area, taxonomic composition (families and genera) and life form (based on Raunkiaer’s life forms, and stem and root growth forms) were recorded in five communities. Taxonomic unit-based hierarchical diversity indices (HDI) and life form-based hierarchical diversity indices (HLDI) were calculated. Twenty-six families, 67 genera, and 87 species were recorded in the five communities. HDI and HLDI were significantly… More >

  • Open Access

    ARTICLE

    Responses of C:N:P stoichiometry of plants from a Hulunbuir grassland to salt stress, drought and nitrogen addition

    Wang XG1, Wuyunna1*, CA Busso2, YT Song1, FJ Zhang1, GW Huo1
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 123-132, 2018, DOI:10.32604/phyton.2018.87.123
    Abstract Chemical elements, such as carbon (C), nitrogen (N) and phosphorus (P), are major limiting nutrients in arid and semiarid grasslands and their stoichiometry (C:N:P) is a very important ratio to determine. In addition, it is critical to understand how plant stoichiometry responds to multiple environmental factors at the species level. In this study, we conducted a greenhouse experiment to investigate the effects of salt stress (4 g NaCl/kg soil), drought (35% of the soil water holding capacity) and N addition (10 g N/m2), as well as their interactions, on C, N and P concentrations and C:N:P ratios in two dominant… More >

  • Open Access

    ARTICLE

    Physiological response of early and late maturity oilseed rape cultivars to drought under two climate conditions

    Jabbari H1, M Gholamhosseini1, M Naeemi2, A Nasiri3
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 133-142, 2018, DOI:10.32604/phyton.2018.87.133
    Abstract Two experiments were performed in 2011-2012 to investigate the response of three oilseed rape cultivars to drought stress, grown under two climate conditions in Iran (cold and hot climates). The experiments were conducted using a randomized complete-block design arranged in split-plot with three replicates. The irrigation treatments (FI: full irrigation; WIF: withholding irrigation at flowering stage, and WIS: withholding irrigation at the silique formation stage until physiological maturity) were allocated to main plots, whereas subplots consisted of the oilseed rape cultivars: early maturating (GKH2005), relatively late maturing (Opera) and late maturing (Okapi). Drought caused a significant reduction in seed number,… More >

  • Open Access

    ARTICLE

    Responses of leaf δ13C and leaf traits to precipitation and temperature in arid ecosystem of northwestern China

    Xin ZM1,2, MH Liu2, Q Lu1,3, CA Busso5, YJ Zhu1,3, Z Li2, YR Huang2, XL Li2, FM Luo2, F Bao1, JQ Qian4*, YH Li1,3*
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 144-155, 2018, DOI:10.32604/phyton.2018.87.144
    Abstract Leaf δ13C is widely used to explain plant strategies related to resource availability in different environments. However, the coupled response of leaf δ13C to precipitation and temperature as well as the relationship between leaf δ13C and leaf traits remain unclear. The leaf δ13C and its relationship with leaf traits [leaf size (LS), leaf length (LL), leaf width (LW), leaf length to width ratio (L:W), specific leaf area (SLA) and mass-based leaf nitrogen concentration (Nmass)] were investigated on the dominant shrub species Nitraria tangutorum Bobr. in the arid region (Dengkou and Minqin) of northwestern China under the simulated increasing precipitation (PGS)… More >

  • Open Access

    ARTICLE

    Evaluation on genetic relationships among China’s endemic Curcuma L. herbs by mtDNA

    Deng JB1,2*, G Gao3, KS Ahmad4, XQ Luo1,2, FT Zhang1,2, S Li1,2, RW Yang5
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 156-161, 2018, DOI:10.32604/phyton.2018.87.156
    Abstract Six mitochondrial (mtDNA) markers, cox2, ccmFn, ccb256, cox3, Nad4L-orf25, and atp4, were combined to assess genetic relationships by using Maximum Likelihood (ML) and Maximum parsimony (MP). This was done among nine Chinese Curcuma herbal species, included two rare species which are difficult to distinguish from their morphological characters. The relationships are very close among the nine species, and the overall distance was 0.018. In this study, the backbone of such nine species was achieved firstly to date, and being divided into two groups with moderate to strong bootstrap support. Both the ML and MP tree were obtained with similarity topologies… More >

  • Open Access

    ARTICLE

    Genetic diversity of water primrose (Ludwigia hyssopifolia) in Thailand based on morphological characters and RAPD analysis

    Tantasawat PA, K Lunwongsa, T Linthaisong, P Wirikitgul, N Campatong, N Talpolkrung, A Tharapreuksapong, O Poolsawat, A Khairum, A Sorntip, C Kativat
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 162-170, 2018, DOI:10.32604/phyton.2018.87.162
    Abstract Genetic diversity and relatedness of 17 water primrose (Ludwigia hyssopifolia) accessions in Thailand were estimated using morphological characters and random amplified polymorphic DNA (RAPD) markers. Eight morphological characters were diverse among the accessions. However, some accessions could not be distinguished from one another based on these morphological characters alone. Unweighted pair-group arithmetic average (UPGMA) analysis of these characters separated these 17 accessions into 2 major clusters. Among the 5 RAPD primers used, a total of 68 fragments (150 to 2000 bp) were amplified, showing a polymorphism percentage of 80%. The polymorphic information content (PIC) among accessions varied from 0.31 to… More >

  • Open Access

    ARTICLE

    Physicochemical and bromatological quality evaluation for bread wheat production

    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 irrigation conditions. Grain Hectolitric weight… More >

  • Open Access

    ARTICLE

    Chilling effects after priming by nitric oxide applications on amelioration of leaf growth and photosynthetic pigments

    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 °C) according to a… More >

  • Open Access

    ARTICLE

    Effects of Rhizoglomus intraradices, Azospirillum brasilense and plant growth regulators application on root architecture in barley (Hordeum vulgare L.)

    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 and epibrassinolide, alone… More >

  • Open Access

    ARTICLE

    Effect of seed priming with hormonal combinations on morphological and biochemical attributes of maize seedlings

    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 fresh (TFW) and dry… More >

  • Open Access

    ARTICLE

    Biomechanical proposal as a cause of incomplete seed and pericarp development of the sunflower (Helianthus annuus L.) fruits

    Hernández LF1,2, PM Bellés3, MA Bidegain4,5, 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 were performed, isolating ovaries by… More >

  • Open Access

    ARTICLE

    Growth and biochemical responses of moringa (Moringa oleifera L.) to vermicompost and phosphate rock under water stress conditions

    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 was 45, 40 and… More >

  • Open Access

    ARTICLE

    Effect of the scarification methods on the germination and growth of seeds of the Fabaceae family members in presence of silver nanoparticles

    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, 500 mg/L… More >

  • Open Access

    ARTICLE

    Influence of heat stress on growth and physiological activities of potato (Solanum tuberosum L.)

    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 a and b pigments… More >

  • Open Access

    ARTICLE

    Stem and root anatomy of Mnesithea selloana (Hack.) de Koning & Sosef

    Moya ME1,2, AA Galussi1,2, N Sattler2, MS Fontana2, YG Gillij1,2
    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 size towards the pith;… More >

  • Open Access

    ARTICLE

    Patterns of Leymus chinensis in response to grazing exclusion across two steppe habitats in Inner Mongolia: implications for phenotypic plasticity

    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 of plasticity, the… More >

  • Open Access

    ARTICLE

    Regrowth, yield and nutrition of Leymus chinensis and Hordeum brevisubulatum in response to defoliation intensity and frequency

    Song Y1, CA. Busso5, Y Yu2, P Wang3, Wuyunna1, D Zhou4
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 242-251, 2018, DOI:10.32604/phyton.2018.87.242
    Abstract The effects of different defoliation intensities and frequencies were studied on regrowth and herbage mass of Leymus chinensis and Hordeum brevisubulatum in northeast China for two years. Plants were defoliated to 6, 8 or 10 cm stubble height by removing about 40% of growth down to each designated defoliation height. In the first year, L. chinensis was defoliated 22, 17 or 13 times, and in the second year was defoliated 21, 15 or 15 times to reach 6, 8 or 10 cm stubble height treatments, respectively. H. brevisubulatum was defoliated 26, 21 or 15 times in the first year, and… More >

  • Open Access

    ARTICLE

    Does seed aggrupation and substrate type affect the germination on three native species of Durango, Mexico?

    Sánchez J1, J Sáenz Mata1, J Flores3, E Jurado2, E Estrada Castillón2, O Aguirre2, G Muro1
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 252-259, 2018, DOI:10.32604/phyton.2018.87.252
    Abstract The chemical and physical properties of the substrate produce positive or negative effects on the germination of seeds, and different pre-germination treatments are applied to obtain better results. However, the use of soil as a substrate where the species grows is usually not evaluated or used as a treatment. The objective of the present study was to evaluate the effect of the native substrate [two types of substrate where the woody species grow (clay and sand)] on the germination of Acacia farnesiana, Larrea tridentata and Prosopis laevigata. In addition, two groups were compared in seeds (grouped and not grouped) of… More >

  • Open Access

    ARTICLE

    Pre-germination treatments on Senna arnottiana and Senna kurtzii: key contributions for restoration initiatives in Payunia, Patagonia, Argentina

    Turuelo NM1, DR Pérez2
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 260-264, 2018, DOI:10.32604/phyton.2018.87.260
    Abstract In arid and semi-arid ecosystems, increasing and irreversible degradation in areas of high conservation value has prompted the search for various solutions, such as rehabilitation and ecological restoration. To implement these strategies, it is essential to solve critical issues affecting the establishment of plants in the field and the production of seedlings in nursery gardens. In the present work, the following pre-germination treatments were evaluated for the species Senna arnottiana and S. kurtzii, endemic to the Patagonian steppe (Payunia): (1) Immersion in water at 80 °C for 5 minutes; (2) Immersion in water at 80 °C for 10 minutes; (3)… More >

  • Open Access

    ARTICLE

    Germination of Oenothera odorata, endemic ruderal Onagraceae from Argentina

    Chichizola GA, AE Rovere, SL Gonzalez
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 265-273, 2018, DOI:10.32604/phyton.2018.87.265
    Abstract The Onagraceae are a well-defined family of flowering plants much used by man. Many representatives of this group, which contains 75 species belonging to 8 genera, are indigenous to Argentina, and 19% of these are commonly found throughout the country. Many Onagraceae are ruderal and promote the subsequent establishment of other species, thus contributing to the restoration of degraded areas. Since it is important to know the characteristics of seeds to be used in restoration projects, we studied the basic germination physiology of Oenothera odorata Jacq., a ruderal plant indigenous to Argentina. Material was collected from roadsides and embankments along… More >

  • Open Access

    ARTICLE

    Microbial inoculation of Parkinsonia praecox (Ruiz & Pav. ex Hook.) Hawkins for ecological restoration

    Álvarez AS1, DR Pérez2
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 274-279, 2018, DOI:10.32604/phyton.2018.87.274
    Abstract The use of microbial inocula for the restoration of severely degraded arid environments is of great interest. This is because there is a presumption that growth-favoring microorganisms can facilitate the establishment of seedlings by increasing their ability to withstand both the stress of transplantation in the case of nursery seedlings, and the extreme conditions for natural establishment imposed by the scarce, random and variable rainfall. In this work we analyze the “slenderness index”- the height of the plant divided by its diameter at the height cotyledon node- to analyze the effect of treatments with microorganisms in the nursery. This variable… More >

  • Open Access

    ARTICLE

    Application of the random forest algorithm for predicting the persistence of seed banks in the Horqin Sandy Land, China

    Tang Y1, SS Jin2
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 280-285, 2018, DOI:10.32604/phyton.2018.87.280
    Abstract Persistent seed banks have been detected in the Horqin Sandy Land, China using experimental methods. In this study, we used seed traits (i.e. seed mass and seed shape) to predict the persistence of seed banks using the random forest algorithm. The results showed that the mean decrease in accuracy for seed mass and seed shape was 18.26 and 9.90, respectively, suggesting that seed mass was a better predictor than seed shape. With increasing seed mass, the log of P (where P is the ratio of the number of votes selecting existence of a persistent seed bank to the number of… More >

  • Open Access

    ARTICLE

    Experimental evidence of soil bacteria abundance as the primary driver of rhizosphere priming effect

    Ma YP1,2,3#, ZJ Zhang1,2#, TQ Su1#, CA Busso4, ER Johnston5, XG Han1,6, XM Zhang2*
    Phyton-International Journal of Experimental Botany, Vol.87, pp. 286-291, 2018, DOI:10.32604/phyton.2018.87.286
    Abstract Soil microbial communities are thought to be responsible for the rhizosphere priming effect (RPE). However, because soil microbial communities are comprised of diverse components, very little is known about which component plays the critical role. In this study, soybean and cottonwood were grown at two latitudinal locations with different temperature and light conditions in-situ. We quantified RPE using a natural δ13C method, and measured the abundance, richness and composition of bacteria and fungi communities with DNA-based molecular methods. Among all potential variables, including the three aforementioned indexes of bacteria and fungi communities and soil physicochemical and plant indexes, bacterial abundance… More >

Share Link

WeChat scan