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  • Open Access


    Fungi degrading metsulfuron methyl in agricultural soils of Argentina

    Vázquez MB1, MV Bianchinotti1,2

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 113-118, 2013, DOI:10.32604/phyton.2013.82.113

    Abstract Strains of Mucor, Penicillium and Trichoderma, able to use metsulfuron-methyl (MM) as a sole carbon and energy source, were isolated from agricultural soils in Argentina. This is the first time this ability is recorded in the Mucor or Trichoderma species. When the isolated strains were compared in relation to their capacity to use the herbicide, those of Trichoderma showed the best results. Because of this, they were selected for further assays. The effect of metsulfuron on growth in liquid media was tested. Also, the ability of conidia to germinate in water agar medium containing the target herbicide was evaluated. All… More >

  • Open Access


    Micropropagation of wild grapevines (Vitis spp.) of Central Mexico

    Jiménez-Martínez JH1, MG Gutiérrez-Martínez2, O Franco-Mora1, A González-Huerta2, AT Gutiérrez-Ibáñez2

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 107-112, 2013, DOI:10.32604/phyton.2013.82.107

    Abstract Two accessions of wild grapevines (Vitis spp.) native to Puebla State, Nealticán and Teziutlán, and other two native to Temascaltepec (1 and 2), Mexico State, were cultured in vitro using both Murashige-Skoog (MS) and woody plant medium (WPM) mediums. There were no differences between mediums for shoot generation. However, differences were shown among accessions for explant vigour, callus development, number of roots, leaves and nodes per explant. Rooting was evaluated only in MS medium by adding naphthalene acetic acid (NAA), indole butyric acid (IBA) or indole acetic acid (IAA) at 0.5 mg/L. With the exception of Temascaltepec 2, NAA generated… More >

  • Open Access


    Comparative effectiveness of two nitrogen sources for corn fertilization

    Copperi MZ1, ME M,olesi2, MA Cantamutto2, MM Ron2

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 99-106, 2013, DOI:10.32604/phyton.2013.82.099

    Abstract Corn has not only a high growth potential and a great capacity of biological response to suitable crop management but also may contribute to a better match of crops with environmental offer in Argentina. Nitrogen (N) fertilization must make provision for eventual N losses, and fertilization strategies must be designed so as to minimize their global incidence. The different quick-release N sources show similar efficiencies when they are incorporated, but in surface applications, sources that contain little or no amidic N have a better performance than urea (U). The objective of this paper was to make an evaluation of corn… More >

  • Open Access


    Accumulation of silver nanoparticles and its effect on the antioxidant capacity in Allium cepa L.

    Juárez-Maldonado1 A, JL Rosales-Velázquez2, H Ortega-Ortiz3, M Cabrera-De-la-Fuente1, H Ramírez1, A Benavides-Mendoza1

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 91-97, 2013, DOI:10.32604/phyton.2013.82.091

    Abstract Nanotechnology is currently an important worldwide study field because it provides control on matter at a nanometric scale. In food and agricultural fields, the applications of this technology are in early stages. Onion is one of the main vegetables grown in the world. Onion is a low calorie food which contains a large amount of flavonoids. In this work, silver nitrate application in onion was evaluated. An onion crop was developed at the University Antonio Narro in Saltillo, Mexico. Two methods of silver nitrate application were used (a nutritive solution: 0, 20, 40 and 80 mg/L of AgNO3; and foliar… More >

  • Open Access


    Sustainable management and use of a medicinal emblematic plant in Chile: Buddleja globosa Hope

    Wilckens P1, MP Fernández2, M Gómez1, I Peña3, G Montenegro1

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 81-90, 2013, DOI:10.32604/phyton.2013.82.081

    Abstract Buddleja globosa Hope is a well-known native, medicinal plant because of its digestive and cicatrizing properties. Due to the increasing domestic and international demand, B. globosa abundance and distribution in Chile has resulted in the intensive exploitation of the plant’s natural habitat, without consideration of the plant’s regenerative capacity. The main objective of this research was to establish the B. globosa growth cycle and model its regeneration cycle. This would allow for more productive, efficient and sustainable use and management of this species, thus ensuring its long-term conservation. We selected two study sites, one wild and another one cultivated. In… More >

  • Open Access


    Anti-inflammatory activity of Ziziphus amole

    Romero-Castillo PA1, MC Pérez Amador Barron1, P Guevara Fefer1, V Muñoz Ocotero1, A Reyes Dorantes2, F Aguirre Garcia2, A Amaya Chavez3

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 75-80, 2013, DOI:10.32604/phyton.2013.82.075

    Abstract The search for new anti-inflammatory drugs with fewer side effects than those currently available in the market has recently attracted the interest of scientists. Medicinal plants might be a natural source of medicines. Such is the case with Ziziphus amole (Sessé & Moc.) M.C. Johnst. or corongoro, a plant species native to México. It is used in traditional medicine as an anti-inflammatory drug, a healing substance and an analgesic, and in the treatment of diarrhea, diabetes, asthma and hemorrhoids. The aim of this study was to evaluate the anti-inflammatory effect of Z. amole in the acute 12-O-tetradecanoylphorbol-13-acetate (TPA) induced mouse… More >

  • Open Access


    Application of the Participatory Rural Appraisal (PRA) to assess the ethnobotany and forest conservation status of the Zarghoon Juniper Ecosystem, Balochistan, Pakistan

    Bazai ZA1, RB Tareen1, AKK Achakzai1, H Batool2

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 69-74, 2013, DOI:10.32604/phyton.2013.82.069

    Abstract The data collection approach called Participatory Rural Appraisal (PRA) was used in five villages: Killi Tor Shore; Medadzai; Ghunda; Kala Ragha, and Killi Shaban. Up to five groups were sampled in each village, comprising a total of 17 villages within the Zarghoon Juniper ecosystem. This area is rich both historically and culturally for using medicinal plants, mostly by women (60%). In this study, 26 species of medicinal plants fit in 20 genera and 13 families. They are used by aboriginal people via the indigenous knowledge they have for the treatment of many diseases. About 60, 35, and 5% of the… More >

  • Open Access


    Determination of insecticide resistance in four populations of potato psillid Bactericera cockerelli (Sulc.) (Hemiptera: Triozidae)

    Cerna E, Y Ochoa, LA Aguirre, M Flores, J Landeros

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 63-68, 2013, DOI:10.32604/phyton.2013.82.063

    Abstract Southeastern potato growing regions from Coahuila and Nuevo León contribute with 15% to domestic production. Such production has been impacted by several factors, in particular Bactericera (=Paratrioza) cockerelli Sulc potato psyllid, one of the most important pests affecting this crop. Its control is based on Insecticide applications, leading to unsatisfactory results and high selection pressure. Five insecticides were evaluated in four field populations of B. cockerelli from the growing region, using a susceptible laboratory line for comparison. The field populations were collected from greenhouse and commercial orchards located at Huachichil, Saltillo, Raíces and San Rafael localities. All the samples were… More >

  • Open Access


    Yield and quality of tomato with organic sources of fertilization under greenhouse conditions

    Márquez-Hernández C1, P Cano-Ríos2, U Figueroa-Viramontes3, JA Avila-Diaz4, N Rodríguez-Dimas2, JL García-Hernández1

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 55-61, 2013, DOI:10.32604/phyton.2013.82.055

    Abstract The scarcity of fertilizers that are allowed in organic agriculture (AO) encourages the search for alternatives, being the use of compost one of the most outstanding. AO has been recognized as a more sustainable system than conventional agriculture. AO is ruled by strict norms which forbid the use of most common fertilizers. The aim of this study was to evaluate the effect of various fertilization treatments on the organic production of greenhousegrown tomato. A completely randomized experimental design with five replications was used, with a 5x2 factorial arrangement. Factors A and B were: a) fertilization treatments and b) tomato genotypes.… More >

  • Open Access


    Variation of botanical composition, forage production and nutrient values along a grassland degradation gradient in the alpine region of Qinghai-Tibet Plateau

    Wen L1, SK Dong1, YY Li1, C Pulver2, XY Li1, JJ Shi3, YL Wang3, YS Ma3, DM Liu4

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 45-54, 2013, DOI:10.32604/phyton.2013.82.045

    Abstract The alpine grassland in the Qinghai-Tibet Plateau is an extensive rangeland ecosystem sustaining a sparse population of traditional nomadic pastoralists in China. However, global climate change and anthropologic disturbances have severely degraded the alpine grasslands, and the consequences of this degradation are largely unknown. Forage is the only food source for livestock in the alpine region, and livestock is the major income source for nomadic herders. Therefore, it is critical to assess the forage quantity and quality along the current grassland degradation gradient. In this study, we examined the botanical composition, biomass of different functional groups, and forage grass nutritive… More >

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