Home / Advanced Search

  • Title/Keywords

  • Author/Affliations

  • Journal

  • Article Type

  • Start Year

  • End Year

Update SearchingClear
  • Articles
  • Online
Search Results (20,254)
  • Open Access


    Inventory of trees and shrubs with ornamental potential in the southeast of the State of Mexico

    Guadarrama-Martínez N1, M Rubí-Arriaga1, A González-Huerta1, LM Vázquez-García2, I Martínez-De La Cruz1, JA López-Sandoval1, GV Hernández-Flores1

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 221-228, 2012, DOI:10.32604/phyton.2012.81.221

    Abstract The southeast region of the “Estado de México” is a transitional floristic zone. The municipalities which constitute are: “Tenancingo”, “Villa Guerrero”, “Malinalco”, “Zumpahuacán”, “Ixtapán de la Sal”, “Tonatico”, “Coatepec Harinas”, “Almoloya de Alquisiras” and “Texcaltitlan”. They present wood of Pinus, wood of Abies, wood of Quercus, mountainous mesophyll wood and deciduous rainforest as the main kind of vegetation. Our objective was to obtain a list of trees and bushes, which can have a potential ornamental use, in the southeast of that state. The botanical material was gathered with the conventional techniques during bimonthly trips to the studied area from June… More >

  • Open Access


    Growth habit and root anatomy in Macroptilium erythroloma and Macroptilium bracteatum (Fabaceae)

    Martín Montiel DC1, SM Pérez de Bianchi1, A Etcheverry1, C Camardelli2, M Alemán1, T Figueroa1

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 215-220, 2012, DOI:10.32604/phyton.2012.81.215

    Abstract We studied the growth habit and root anatomy on two species of the Macroptilium genera, Fabaceae. These species, potential forages, are native to the Northwest Provinces in Argentina. The aims of this paper were to determine the survival capacity of the study species relating its growth habit and persistence with morphological and anatomical features. Root samples were collected and cut using either a microtome or by hand, at varying distances from the root tip. Cuts were examined under a light microscope, and with scanning electron microscopy (SEM) using staining techniques. Macroptilium bracteatum and M. erythroloma are perennial herbs. Aerial parts… More >

  • Open Access


    Leaf margin serration and its taxonomical significance in the genus Hibiscus

    Bhat RB

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 211-213, 2012, DOI:10.32604/phyton.2012.81.211

    Abstract Types of leaf margin serration were investigated in ten species of the genus Hibiscus. Types and frequency of serration varied widely from species to species, from common to occasional to rare. Leaf serration is an important taxonomical feature in Hibiscus. More >

  • Open Access


    Leaf and stem anatomy and micromorphology in two cut flower cultivars of Rosa hybrida L.

    Cohen1 G, L Mascarini1, CC Xifreda2

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 199-204, 2012, DOI:10.32604/phyton.2012.81.199

    Abstract Micromorphological and anatomical differences in leaf epidermis and stem xylem of Rosa hybrida ‘Lovely Red ‘ (LR) and ‘Rouge Baiser’ (RB), commercially grown in Buenos Aires, Argentina, were examined in the lower half of the terminal leaflet of 5-foliate leaves and in the basal part of stem, respectively. Digital images obtained from SEM and a phase contrast microscope were used with this purpose. Epicuticular wax, which was present on both sides of the leaves, was more abundant in LR than in RB. Stomata were only present on the abaxial side; they were 111 and 129 per mm² in LR and… More >

  • Open Access


    Ion and salt effects on the productivity and proline accumulation in Lippia gravolens H.B.K.

    Valdés Oyervides FJ1, C Rivas Morales2, A Benavides Mendoza1, MA Núñez González2, J Verde Star2, A Oranday Cárdenas2, V Robledo Torres2

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 191-198, 2012, DOI:10.32604/phyton.2012.81.191

    Abstract Four dynamic conditions to evaluate the effects of stress on production of biomass, essential oils, Thymol, carvacrol and proline accumulation in Lippia graveolens H.B.K. were investigated under greenhouse conditions. A bifactorial design assessed four environmental conditions (factor B): commercial nutritive solution (B0); Water (B1); moderate stress (B2), and intermediate (B3) stress nested under (Factor A) salinity (NaCl) and ion concentration (Cu2+) and (Fe2+) stresses. Average production of fresh weight and number of leaves were reduced under NaCl and both ion concentration conditions. However, there were no significant differences on average for the four environments. The amounts of essential oils were… More >

  • Open Access


    Responses of Conocarpus lancifolius to environmental stress: a case study in the semi-arid land of Kuwait

    Redha A, P Suleman, R Al-Hasan, M Afzal

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 181-190, 2012, DOI:10.32604/phyton.2012.81.181

    Abstract Cococarpus lancifolius Engl. grows wild in Djibouti, Somalia and East Africa, and South Asia. The species was introduced into Kuwait, where it is exposed to several stresses: oil pollution, salinity, high temperature and harsh climatic conditions. These conditions are prevalent in its semi-arid environment. In this study, the impact of salinity (2, 6 and 10%), temperature (20, 30 and 40 °C), polyethylene glycol (10, 30 and 60%) and drought has been investigated on C. lancifolius. Proline (Pro) accumulation (5.5 ± 0.03 µg/g dry weight; p≤0.05-0.005), protein (16.47 ± 0.052 mg/g; p≤0.001), free amino acids (10.92 ± 0.082 mg/g; p≤0.006) and… More >

  • Open Access


    Semi-lethal high temperature and heat tolerance of eight Camellia species

    He XY1,2, H Ye1, JL Ma1,2, RQ Zhang2, GC Chen1, YY Xia1

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 177-180, 2012, DOI:10.32604/phyton.2012.81.177

    Abstract Annual leaf segments of eight Camellia species were used to study the heat tolerance by an electrical conductivity method, in combination with a Logistic equation to ascertain the semi-lethal high temperature by fitting the cell injury rate curve. The relationship between the processing temperature and the cell injury rate in Camellia showed a typical "S" shaped curve, following the Logistic model. The correlation coefficient was above 0.95. The semi-lethal high temperature LT50 of the eight Camellia species, determined by the inflection point on the curve, varied from 50 to 57 LT50 / °C, following the descending order: Camellia oleifera >… More >

  • Open Access


    Germination of four grasses under salt stress

    Ruiz M1 y O Terenti2

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 169-176, 2012, DOI:10.32604/phyton.2012.81.169

    Abstract In Argentina cultivated grasses are the livelihood of the traditional livestock systems. Actually, the introduction of pastures in arid zones is one of the major challenges for ranchers. The aim of this work was to assess the germination of four forage species: Agropyron elongatum, Antephora pubescens, Cenchrus ciliaris cv Texas and Panicum coloratum cv Klein verde under water stress and salinity. Were used solutions of NaCl, KCl, Na2SO4, K2SO4 and Mannitol as inert solute, obtaining osmotic potentials (Ψo) of -0.5, -1, -1.5 -2.0, or -2.5 MPa. Seeds were cultivated in Petri dishes on germination paper, watered with 4 mL of… More >

  • Open Access


    Germination of simojovel pepper seeds (Capsicum annuum L.) previously exposed to NaCl and gibberellic acid

    De la Rosa M1, L Arce1, JA Villarreal1, L Ibarra2, J Lozano3

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 165-168, 2012, DOI:10.32604/phyton.2012.81.165

    Abstract Simojovel pepper seeds were first treated with 0.5 M NaCl, and then put to germinate in solutions of gibberellic acid at different concentrations. Initially, seeds were either preconditioned or not with NaCl combined with 0, 100, 200, 300 or 400 mg/L gibberellic acid. In a second phase of the study, seeds preconditioned with NaCl were exposed to 0, 350, 400, 450 or 500 mg/L gibberellic acid. Experiments were arranged in a completely randomized design with a factorial arrangement of 2 x 5 with four replications. The greatest (p≤0.01) germination percentage (91.75%) was obtained on seeds previously exposed to NaCl and… More >

  • Open Access


    Smudge and other diseases of onion caused by Colletotrichum circinans, in southern Argentina

    Kiehr M1, R Delhey1, A Azpilicueta2

    Phyton-International Journal of Experimental Botany, Vol.81, pp. 161-164, 2012, DOI:10.32604/phyton.2012.81.161

    Abstract While studying the etiology of onion diseases in southern Argentina, a coelomycetous fungus was found associated with diverse disease expressions. They included the typical smudge symptoms in white onion bulbs in local markets as well as field infections on yellow- and red-coloured cultivars, with severe infections on transplants in the seed-bed. The fungus was isolated and identified as Colletotrichum circinans on the basis of its morphological, morphometric, biological and pathological characteristics. Two isolates, obtained from white bulbs and from transplants, were inoculated on bulbs of white and yellow-coloured cultivars and produced the typical smudge symptoms on the outer scales. Koch´s… More >

Displaying 14291-14300 on page 1430 of 20254. Per Page