Avendaño-Arrazate CH¹, L Iracheta-Donjuan¹, JC Gódinez-Aguilar², P López-Gómez¹, A Barrios-Ayala³

Phyton-International Journal of Experimental Botany, Vol.84, No.1, pp. 148-162, 2015, DOI:10.32604/phyton.2015.84.148

Abstract The agave papalote (Agave cupreata Trelease) which is endemic to the Guerrero state, Mexico, is propagated exclusively by seed, but it is overutilized and knowledge of its diversity is needed for its protection. Therefore, the study aimed to determine the morphological variation in wild and cultivated populations of Agave cupreata in five areas of Guerrero. Ninety one characters were evaluated in situ, and only 51 qualitative and quantitative morphological characters of the plant, leaf spine, flower, fruit, seed and flower stalk were selected. The work was carried out in five different altitudinal zones, according to the level of production of… More >

Usama K Abdel-Hameed

Phyton-International Journal of Experimental Botany, Vol.83, pp. 363-367, 2014, DOI:10.32604/phyton.2014.83.363

Abstract In Egypt there are two different species that are commercially marketed under the same trade name of Neem: one is Azadirachta indica A. Juss., and the other is Melia azedarach L. In this paper, leaf morphological characters (e.g., lamina architecture, stomatography, petiole and blade micromorphology) of both taxa were described and illustrated to aid in the identification and differentiation between the two misidentified taxa. The obtained results concluded that leaf morpho-anatomical characters will not only provide criteria for their correct taxonomic authentication, but would also serve as future standard data for the quality assessment of the pharmaceutical preparation of botanical… More >

Espinoza Sánchez EA¹, H Silos Espino¹, S Flores Benitez¹, LL Valera Montero¹, E Rodríguez Salazar², C Gallegos Vázquez³, F Guevara Lara⁴, M González Chavira⁵, HS Guzmán Maldonado⁵

Phyton-International Journal of Experimental Botany, Vol.83, pp. 299-306, 2014, DOI:10.32604/phyton.2014.83.299

Abstract Dendrograms were constructed based on AFLP markers and a table was used to group fruit characters of wild and cultivated genotypes of Mexican nopal (Opuntia spp.). The AFLP dendrogram obtained using ≈57.5 markers (from primers Mse I-CAC/Eco RI-AAG) did not agree with the known taxonomic classification for this species. Additionally, a complementary table for fruit characters (morphological and °Brix) showed a wide range for wild genotypes, e.g. from 21-22 °Brix for ‘Tapón Blanco’ and ‘Guilanche’ genotypes, to 5.0-8.2 °Brix for xoconostles (acidic fruits). Even though there were some divergences with taxonomic classification, it is expected that both genetic and physicochemical… More >

Flores-del Angel ML, R Foroughbakhch, A Rocha-Estrada, ML Cárdenas-Ávila, MA GuzmánLucio, YL Hernández-Aguilar, MA Alvarado-Vázquez

Phyton-International Journal of Experimental Botany, Vol.82, pp. 161-167, 2013, DOI:10.32604/phyton.2013.82.161

Abstract Candelilla (Euphorbia antisyphilitica Zucc.) is a native plant in the desert regions of northern Mexico and the southern United States. The primary commercial use of this plant is for wax production. This study assessed the morphology, viability, and the effects of temperature in combination with chemical and mechanical scarification on the germination of candelilla seeds. Seeds were collected in four localities in northeastern Mexico. The seeds were predominantly pyriform with foveolate surfaces and brown in color; on average, the seeds measured 2.92 ± 0.26, 1.91 ± 0.22, and 1.50 ± 0.41 mm in length, width, and thickness, respectively. The average… More >

Galussi AA^1,2, ME Moya^1,2, LR Zimmermann¹, FG Marchese^1,2, YG Gillij^1,2, F Torres^1,2

Phyton-International Journal of Experimental Botany, Vol.81, pp. 255-260, 2012, DOI:10.32604/phyton.2012.81.255

Abstract Mnesithea selloana (known as cola de largarto, teyú ruguay) is a spring-summer-fall species that flowers and fructifies in that period; it has good forage quality, and it is in danger of extinction in the natural grasslands at the study region. The objectives of this work were to study the sinflorescence morphology, and the maturity and quality of the caryopsis to know its reproductive aspects in relation to the dissemination of this especies in grazing areas. The sinflorescence was studied in two plants during a period of 45 days, between October and December 2010, within an experimental field of the UNER… More >

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 >

Gaspar-Peralta P¹, JC Carrillo-Rodríguez¹, JL Chávez-Servia, AM Vera-Guzmán², I Pérez-León¹

Phyton-International Journal of Experimental Botany, Vol.81, pp. 15-22, 2012, DOI:10.32604/phyton.2012.81.015

Abstract In order to evaluate the agronomic behavior, genotypic variation, lycopene content, and other components of fruit quality, eight advanced tomato lines were planted in greenhouses during two crop cycles, August-December 2008 and February-July 2009. Tomato lines showed significant differences in leaf length (LL), stem diameter (SD), number of flowers per branch (FLNB), number of fruits per branch (FRNB), locules per fruit (LPF), and fruit length (FRL), and the greatest phenotypic expression in fruit traits was quantified in August-December 2008. Environmental variance was significantly higher than the genotypic and genotype-environment interaction variances in LL, FRNB, fruits per plant, average weight of… More >

Perissé P¹, RJ Lovey², CV Arias³, M Scandaliaris², ML Molinelli¹

Phyton-International Journal of Experimental Botany, Vol.80, pp. 73-78, 2011, DOI:10.32604/phyton.2011.80.073

Abstract Dicliptera squarrosa Nees, “canario rojo”, “coral de campo” or “ajicillo”, is a perennial native herb of the north, center and east of Argentina. It is cited as an ornamental, apiarian, emergency forage plant, and as a glyphosate-tolerant weed. The objectives were to characterize the seed and seedling of D. squarrosa and to establish the relationships with the structures that ensure its survival. The materials were treated with the conventional methodology to perform morphological studies, using stereoscopically and optical microscopy. The germination assays were carried out to determine the germination percentage and the germination type. The weight of 1000 seeds was… More >

Andersen A, Lucchini F, J Moriconi, EA Fernández

Phyton-International Journal of Experimental Botany, Vol.75, pp. 137-143, 2006, DOI:10.32604/phyton.2006.75.137

Abstract Medicinal plants with mesomorphic and xeromorphic characteristics are a significant component of the indigenous flora of San Luis province. In popular medicine, Lippia turbinata “poleo” has emmenagogic, diuretic and stomach properties.
The morphological and anatomical aspects of foliar leaves were studied according to their environmental conditions, in order to contribute to the identification of samples of commercial drugs. From the studied sections, differences in the following aspects were detected, namely the form and type of epidermic cells, the presence of idioblasts in adaxial epidermic position, thickness of cuticle, density of nonglandular trichomes, the structure of the mesophyll and the… More >

Semerdjieva IB¹, EP Yankova-Tsvetkova²

Phyton-International Journal of Experimental Botany, Vol.86, pp. 318-324, 2017, DOI:10.32604/phyton.2017.86.318

Abstract Scanning electron microscope (SEM) study of the pollen and seed morphology of Peganum harmala L. and Zygophyllum fabago L. (Zygophyllaceae), in native Bulgarian populations, was carried out. Additionally, a light microscope (LM) investigation on pollen grains was made in order to elucidate the peculiarities of the major parameters of pollen surface and size. It was established that pollen grains in Z. fabago are pantoporate. Exine ornamentation is reticulate. The pollen grains of P. harmala are oblate, spheroidal, elongated, oval in shape, colporate, exine striato-rugulate. The seeds of P. harmala are oblong-oval and slightly flattened at the side (incorrect tetrahedral to… More >