Martinez CF¹, FA Roig², JB Cavagnaro³, MA Cantón¹, AM Di Blasi⁴

Phyton-International Journal of Experimental Botany, Vol.82, pp. 151-160, 2013, DOI:10.32604/phyton.2013.82.151

Abstract Urban forests located in dryland regions of Argentina are sustained mostly by groundwater and water coming from thawing in the Andes. This is because the most commonly planted tree species have high water requirements and are most often exposed to water shortage. This study assessed the effect of water deficit on diverse growth variables in saplings of Acacia visco (native tree species) and Morus alba (exotic tree species), two common tree species in the urban forests of Mendoza’s Metropolitan Area. Saplings were exposed to different levels of water deficit under controlled nursery conditions during three growing seasons. There were three… More >

Tucuch-Cauich FM¹, F Orona-Castro¹, IH Almeyda-León², LA Aguirre-Uribe³

Phyton-International Journal of Experimental Botany, Vol.82, pp. 145-149, 2013, DOI:10.32604/phyton.2013.82.145

Abstract Ango is the main species of fruit in the state of Campeche, Mexico, due to the economic benefits generated because of its production and marketing. Among the biotic problems that affect this crop in the region are weeds, which involve a heavy economic investment for their management. Under this scenario, it is important the development of ecological weed studies to generate information that help us to design strategies for managing the problem. During January to June 2010 a floristic study was developed on the population of weeds that compete with mango in the locations of Cayal and Castamay, at the… More >

Gómez-Romero M¹, E de la Barrera², J Villegas³, R Lindig-Cisneros⁴

Phyton-International Journal of Experimental Botany, Vol.82, pp. 135-143, 2013, DOI:10.32604/phyton.2013.82.135

Abstract When degradation is severe, as it is often the case on acrisols, it is necessary to test the effect of plant-plant interactions in their survival and growth. An experiment was conducted, with substrate from an eroded site (acrisols with gullies) in a shaded greenhouse (30% shade) to evaluate the effect of fertilization and the presence of pioneer herbaceous species in the performance of Pinus pseudostrobus. The pioneer species Lupinus mexicanus and Tithonia tubiformis were used in three experimental treatments and a control. To fertilize, KH₂PO₄ was applied in four concentration levels. There were a total of 16 treatment combinations when… More >

Carreón-Abud Y, MA Beltrán-Nambo, M Martínez Trujillo

Phyton-International Journal of Experimental Botany, Vol.82, pp. 127-134, 2013, DOI:10.32604/phyton.2013.82.127

Abstract Chromium (Cr) is a highly toxic non-essential metal for microorganisms and plants; due to its frequent industrial use, it has become a pollutant for different agroecosystems. Arbuscular mycorrhizal fungi (AMF) are associated with most angiosperms and provide them with beneficial effects on the absorption of some nutrients. Moreover, it has been reported that in some cases the AMF can confer greater tolerance to plants in the presence of heavy metals. The tomato (Solanum lycorpersicum) is an important crop in Mexico. In most cases, it grows under applied irrigation water from reservoirs which include domestic and industrial wastes. In this study… More >

Bonomo MC, OG Martínez, ME Tanco, R Cardozo, Z Avilés

Phyton-International Journal of Experimental Botany, Vol.82, pp. 119-126, 2013, DOI:10.32604/phyton.2013.82.119

Abstract The tree fern Alsophila odonelliana is found from southern Bolivia to northwestern Argentina, in the Tucuman-Bolivian forests. Spore germination was tested in three sterile nutritive media: Dyer (D), Murashige and Skoog (MS) and Knudson (K). We also evaluated the effect on gametophyte development of the addition of two growth regulators, BAP and 2,4-D to the culture medium Dyer; 2,4-D was evaluated using two concentrations: 0.1 and 2.0 mg/L, and BAP using three concentrations, 0.01; 0.1 and 1.0 mg/L. We found no significant differences in the germination of spores among all three media. We noted that supplementing media with BAP affected… More >

Vázquez MB¹, MV Bianchinotti^1,2

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 >

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 >

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 >

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 >

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 >