Entio LJ y MM Mujica

Phyton-International Journal of Experimental Botany, Vol.83, pp. 243-250, 2014, DOI:10.32604/phyton.2014.83.243

Abstract Successful establishment of Lotus tenuis, an important legume to improve grasslands in the Pampa Deprimida, might be limited by low seedling vigor. The number of crown stems is an important component of vigor. The objective of this work was to determine the variability in the number of crown stems on seedlings of 11 Lotus tenuis natural populations sown at high density under semi-controlled conditions. Seeds of all populations were collected in the Province of Buenos Aires, Argentina. They were sown in plastic pots and cultivated in a greenhouse. Eight weeks after seeding, seedlings of each population were grouped according to… More >

López Martínez JD¹, E Salazar Sosa¹, HI Trejo-Escareño¹, JL García Hernández¹, M Navarro Morones², C Vázquez-Vázquez¹

Phyton-International Journal of Experimental Botany, Vol.83, pp. 237-242, 2014, DOI:10.32604/phyton.2014.83.237

Abstract The Laguna Region located in the states of Durango and Coahuila, Mexico, is the main cow milk production region of Mexico. Here there are about 500000 heads of cattle. This region produces about 1.2 million tons of cattle manure annually, which allows raising the possibility of their use in agriculture. Treatments evaluated in this study were: plant density (120000 and 240000 plants/ha), solarized cattle manure (0, 40, 80, 120 t/ha), and an additional chemical treatment of 120-60-00 kg/ha of nitrogen, phosphorus and potassium, respectively. A randomized block design with a strip arrangement was used. Three replicates were used per treatment.… More >

Castellón Martínez E¹, JC Carrillo-Rodríguez¹, JL Chávez-Servia², AM Vera-Guzmán²

Phyton-International Journal of Experimental Botany, Vol.83, pp. 225-236, 2014, DOI:10.32604/phyton.2014.83.225

Abstract Farmers’ role is important for the selection and conservation of the local diversity of native peppers (Capsicum annuum L.), which are distinguished by pod shape, plant traits, and show high levels of biogeographic and cultural heterogeneity. Our objective was to evaluate the phenotypic variation and postharvest changes of fruits in six morphotypes of native peppers from the Central Valleys of Oaxaca, Mexico. This would contribute information on the diversity of pepper landraces. Collection and characterization of plant and fruits were undertaken for 52 samples grouped into six morphotypes, under a completely randomized block design with three repetitions under greenhouse conditions.… More >

Wei TX¹, XJ Zhang^1,2, JZ Zhu¹

Phyton-International Journal of Experimental Botany, Vol.83, pp. 213-223, 2014, DOI:10.32604/phyton.2014.83.213

Abstract In order to examine the nutrient content, and the distribution and accumulation patterns of individual nutrients in the natural secondary forests (NSFs), sample NSF plots were selected in the Caijiachuan watershed on the Loess Plateau. On the basis of a comprehensive field inventory to the NSFs in Caijiachuan watershed, a 40 m × 40 m sample plot was selected as the representative plot. Each tree plant was then measured to select the standard tree in accordance with a diameter-scale. For measurement of the biomass in the above-ground part of the tree, it was divided into parts and measured. The study… More >

Rubí-Arriaga M, A González-Huerta, I Martínez-De La Cruz, O Franco-Mora, JF Ramírez-Dávila, JA López-Sandoval, GV Hernández-Flores

Phyton-International Journal of Experimental Botany, Vol.83, pp. 203-211, 2014, DOI:10.32604/phyton.2014.83.203

Abstract Sultepec, State of Mexico, located on the central part of Mexico, belongs to the Physiographic province “Sierra Madre del Sur” and to the Subprovince “Depresión del Balsas”. Although it is known for its floristic richness, it lacks an inventory of vascular plants, including the fruit species. The aim of this work was to elaborate a database including family, scientific name, local name, biological form, origin, use, management, production and service of the fruit species. Plants were collected continuously from June 2010 to June 2011. Subsequently, they were determined in the herbarium “Eizi Matuda” (CODAGEM) from the Facultad de Ciencias Agrícolas… More >

Ramírez-Dávila JF¹, RA Jiménez-Carrillo², JR Sánchez-Pale¹, M Rubí Arriaga¹, DK Figueroa-Figueroa¹

Phyton-International Journal of Experimental Botany, Vol.83, pp. 193-202, 2014, DOI:10.32604/phyton.2014.83.193

Abstract This study contributes to the knowledge of the biodiversity of the flora of the State of Mexico through an analysis of the distribution and abundance of Asclepias curassavica L., which is planted with ornamental and medicinal potential. The study was carried out in the municipalities of Temascaltepec, Malinalco and Valle de Bravo. The spatial statistical method was used to determine the distribution of A. curassavica based on the method SADIE (spatial analysis by remote indexes). Sampling transects of 200 m, marked every 10 m, were used in the three municipalities, during three times of the year, spring, summer and winter.… More >

López-Vidal¹ O, H Escalona-Buendía², C Pelayo-Zaldívar², J Cruz-Salazar¹, JM Villa-Hernández¹, F Rivera-Cabrera¹, O Villegas-Torres³, I Alia-Tejacal³, L J Pérez-Flores¹, F Díaz de León-Sánchez¹

Phyton-International Journal of Experimental Botany, Vol.83, pp. 185-192, 2014, DOI:10.32604/phyton.2014.83.185

Abstract During ripening, tomato fruit accumulates high levels of carotenoids. These compounds, besides their function as pigments, nutrients and antioxidants, are precursors of some important volatile compounds for the development of the characteristic aroma of these fruits. In the present work, the antioxidant capacity, lycopene and β-carotene levels, and the production of aromatic substances derived from the carotenoid biosynthetic pathway were analyzed in the tomato cultivar 7705 at different ripening stages. Results showed a significant (p<0.05) increase of lycopene and β-carotene (22.1 and 2.9 fold, respectively) from the mature green to the breaker stage. Lycopene levels increased and those of β-carotene… More >

González MD, CM Luis, PL Lanzelotti

Phyton-International Journal of Experimental Botany, Vol.83, pp. 179-184, 2014, DOI:10.32604/phyton.2014.83.179

Abstract Characterization of oregano in Argentina is limited. They are normally known with fancy names, but it is not possible to recognize whether they are genetically equivalent or not. This paper presents a non-volatile polyphenol study of one of the subspecies of Origanum vulgare, O. vulgare L. ssp. viridulum (Martrin-Donos) Nyman [= O. vulgare L. ssp. virens (Hoffmannsegg et Link) Ietswart]. The polyphenols 3-(3,4-dihydroxyphenyl)lactic acid, 3,4-dihydroxybenzoic acid, caffeic acid, 4-(3.4-dihydroxybenzoyloxymethyl)phenyl β-glucoside and rosmarinic acid were isolated and identified by spectroscopic analysis from leaves and inflorescences of classified material. In addition, the polyphenol profile of the hydroalcoholic extract of this oregano was… More >

Díaz-López E¹, JM Loeza-Corte², I Brena-Hernández², JM Campos Pastelín², IJ Orlando-Guerrero², G Salgado-Benítez³

Phyton-International Journal of Experimental Botany, Vol.83, pp. 171-178, 2014, DOI:10.32604/phyton.2014.83.171

Abstract The Toluca´s México valley is considered a high valley because it is situated at 2560 m.a.s.l. In this region, maize is the most important crop; free pollination [Yellow, red, blue and flour maize (Cacahuacintle)] and hybrid materials are grown. Corn yield is negatively affected by an inadequate P fertilization. The aim of this study was to determine the agronomic effectiveness of phosphorus in terms of biomass and yield on three cultivars of maize as a function of six levels of phosphorus fertilization in the Toluca´s valley, Mexico. The materials Amarillo Almoloya, Cacahuacintle and Cóndor were sown under a completely randomized… More >

Bouzo CA, JC Favaro

Phyton-International Journal of Experimental Botany, Vol.83, pp. 167-170, 2014, DOI:10.32604/phyton.2014.83.167

Abstract The aim of this work was to compare methods to predict the time of anthesis in tomato (Solanum lycopersicum L.). Two independent experiments were carried out using seeds of the Tauro commercial hybrid. Daily maximum and minimum air temperatures were measured by means of an electronic thermometer with data storage; the photoperiod was calculated using a mathematical procedure. The moment at which each inflorescence presented 50% of its flowers in anthesis was recorded. The use of calendar days (CD) had a high dispersion, which was measured with a variation coefficient (VC) higher than 3.70% for all inflorescences. The method that… More >