Perissé P¹, R Lovey², ML Molinelli¹, M Scandaliaris²

Phyton-International Journal of Experimental Botany, Vol.83, pp. 275-281, 2014, DOI:10.32604/phyton.2014.83.275

Abstract Cologania broussonetii (Balb.) DC. stands out as valuable perennial, native forage that grows in northwestern Argentina, Cordoba hills and San Luis Province. The objectives of this study were to establish the vegetative and reproductive structures in function of the strategies and survival tactics of Cologania broussonetii. The specimens were collected in the Pan de Azúcar loaf mountain, Córdoba, and in the experimental plots of the FCA, UNC, and were then deposited in the Herbarium ACOR and in the Seed Collection. Seedlings were obtained from germination assays. Cross section cuts were performed on the survival structures of adult plants, and on… More >

Parolin P, M Ion Scotta, C Bresch

Phyton-International Journal of Experimental Botany, Vol.83, pp. 251-262, 2014, DOI:10.32604/phyton.2014.83.251

Abstract Dittrichia viscosa is a common plant species in the Mediterranean region which is adapted to a wide range of environmental stresses. It is an important species that can be used for phytoremediation, as bioaccumulator or bioindicator, and it has the potential for being employed in integrated pest management in the Mediterranean ecosystem due to its entomophilous character. 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 >

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 >

Suarez Tapia A¹, MB Villamil¹, LJ Grabau²

Phyton-International Journal of Experimental Botany, Vol.83, pp. 71-81, 2014, DOI:10.32604/phyton.2014.83.071

Abstract Public demand for healthier foods and more sustainable food systems in the U.S. has triggered market prices and production of organic alternatives of major crops such as corn (Zea mays L.). Two cover crops and their interactions with tillage systems, N sources and N rates were studied to evaluate the possibility of using these agronomic practices to facilitate growing corn under organic management in Kentucky. A split-split plot design in a RCBD with four replications was evaluated in three environments (SP08, UKR08, UKR09). The main plot treatments were cover crops [hairy vetch, HV (Vicia villosa Roth) and rye (Secale cereale… More >

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 >

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 >

Guan Z-J^1,2,*, B Guo^1,*, Y-L Huo³, J-K Dai⁴, Y-H Wei¹

Phyton-International Journal of Experimental Botany, Vol.81, pp. 51-58, 2012, DOI:10.32604/phyton.2012.81.051

Abstract The initiation and development of organogenic buds and somatic embryos in HBsAg-transgenic cherry tomato (Lycopersicum esculentum var. cerasiforme) mutant were studied histologically. The leaf explants of the mutant were cultured on Murashige & Skoog (MS) basal medium supplemented with 6-BA 1.0 mg/L and IAA 0.05 mg/L for callus induction. Histological studies on the leaf explants of the mutant at various developmental stages revealed that organogenic buds first appeared in the axillary position of explants on the 14th cultured day, and then somatic embryos formed in the same mutant explants after 35 days of culture. Transmission electron microscopy and scanning electron… More >

Argüello JA¹, SB Núñez¹, V Davidenco¹, DA Suárez², L Seisdedos¹, MC Baigorria¹, N La Porta¹, G Ruiz¹, V Yossen¹

Phyton-International Journal of Experimental Botany, Vol.81, pp. 23-34, 2012, DOI:10.32604/phyton.2012.81.023

Abstract The aim of the present review was to analyze and identify the problems associated with the Production System and Chain Value of Oregano in the area of Traslasierra Valley, province of Córdoba. Traditional ecotypes, such as Criollo, Chileno II and Compacto, are cultivated in the region, as well as new ecotypes such as “Serrano Cordobés”, “Flor Rosa” and “Rosa Fuerte”. The Traslasierra Valley of Córdoba is a very suitable area for the production and for increasing the production of oregano. However, the agricultural management of the different oregano ecotypes should be optimized. Ecophysiological studies conducted to date in the region… More >

O’Connor-Sánchez¹ A, AV Domínguez-May¹, MA Keb-Llanes¹, YJ Peña-Ramírez², VA Herrera-Valencia¹

Phyton-International Journal of Experimental Botany, Vol.79, pp. 25-29, 2010, DOI:10.32604/phyton.2010.79.025

Abstract A reliable protocol for plant regeneration of Mullein Nightshade (Solanum donianum Walp.) was developed from in vitro leaf explants. They were cultured on Murashige and Skoog semisolid medium, supplemented with several combinations of zeatin riboside and 1-naphthaleneacetic acid for shoot regeneration. The formulation that originated most shoots per explant was 8.5 μM zeatin riboside in absence of 1-naphthalene acetic acid. Explants with shoots were transferred to Murashige and Skoog medium, with half the normal salt concentration and without plant growth regulators for elongation. Elongated shoots were individualized, and they rooted readily in half-strength Murashige and Skoog medium without plant growth… More >