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  • Open Access

    ARTICLE

    PGPR inoculation improves growth, nutrient uptake and physiological parameters of Capsicum chinense plants

    Castillo-Aguilar C de la C1, JJ Zúñiga-Aguilar2, AA Guzmán-Antonio2, R Garruña3

    Phyton-International Journal of Experimental Botany, Vol.86, pp. 199-204, 2017, DOI:10.32604/phyton.2017.86.199

    Abstract The Habanero pepper (Capsicum chinense) is intensively cultivated in the Yucatan peninsula, México. Because of adverse environmental conditions, it required seeding in germination trays, from which six-week-old seedlings were transplanted to the soil. Adequate nursing and fertilization programmes were made to improve health and vigour before seedlings transplanting. During seed germination, we investigated the effects of inoculation with four plant growth-promoting rhizobacteria (PGPR) on growth, nutrient uptake and gas exchange of 8-week-old Capsicum chinense plants. Inoculation was made with Pseudomonas sp. -P61-, Pseudomonas sp. -A46-, Bacillus pumillus -R44-, and Paenibacillus polymyxa-BSP1.1-. The BSP1.1 strain produced the highest increase in… More >

  • Open Access

    ARTICLE

    Defoliation management of kleingrass (Panicum coloratum L. var coloratum) cv Verde

    Ferri CM, VV Jouve, AM Sáenz

    Phyton-International Journal of Experimental Botany, Vol.86, pp. 190-198, 2017, DOI:10.32604/phyton.2017.86.190

    Abstract The defoliation frequency determines above and below ground biomass accumulation, pasture structure and nutritive value. Two defoliation experiments with Panicum coloratum were performed, from September to March. One of them was conducted in pots under greenhouse conditions, and the other one in field plots for three growing seasons (EC) at the Faculty of Agronomy, La Pampa, Argentina (36˚ 46' S; 64˚ 16' W). Defoliation frequency treatments were four cutting intervals (IC; 3, 4, 6 and 8 weeks). In greenhouse experiment, live leaf blade accumulation rates (TAL), tiller appearance (TAM) and death (TMM) rates, live leaf blade… More >

  • Open Access

    ARTICLE

    Cluster analysis of leaf macro- and micro- morphological characteristics of Vicia L. (Fabaceae) and their taxonomic implication

    Abozeid A1,2, Y Liu1, J Liu1, ZH Tang1

    Phyton-International Journal of Experimental Botany, Vol.86, pp. 306-317, 2017, DOI:10.32604/phyton.2017.86.306

    Abstract The genus Vicia L. belongs to the tribe Vicieae of the Fabaceae family. The genus includes about 190 species, from which about 40 species have economic importance. Some of them are food crops, but more than a dozen are forage plants. In this study, leaves of Vicia species from China, USA and Argentina were examined using stereo-microscopy and light microscopy. We determined macro- and micro-morphological characteristics that could be of taxonomic use. Forty eight characteristics of each taxon were determined including petiole and tendril length; leaflets number, length, width, shape, apex, base; blade surface, trichome shape, More >

  • Open Access

    ARTICLE

    SCAR molecular markers to identify disease resistance sources in ayocote beans (Phaseolus coccineus)

    Ruíz-Salazar R1, JS Muruaga-Martínez2, MLP Vargas-Vázquez2, G Alejandre-Iturbide4, G Castañón-Nájera3, S Hernández-Delgado1, N Almaraz-Abarca4, N Mayek-Pérez1,5

    Phyton-International Journal of Experimental Botany, Vol.85, pp. 184-193, 2016, DOI:10.32604/phyton.2016.85.184

    Abstract In order to identify genes of resistance to four diseases that affect Phaseolus sp. [i.e, Common Bacterial Blight (CBB), Bean Common Mosaic Virus (BCMV), Bean Golden Mosaic Virus (BGMV) and angular leaf spot (ALS)], we amplified nine SCAR (Sequence Characterized Amplified Regions) markers: four linked to resistance to common blight, two for BCMV, two for BGMV and one for ALS. The genetic material included 16 ayocote bean (P. coccineus) populations collected from different locations at Veracruz and Puebla, Mexico. Populations from Veracruz showed greater number of SCARs for BGMV and ALS compared with populations from Puebla. More >

  • Open Access

    ARTICLE

    Leaf architecture characters of Vachellia tortilis (Forssk.) Galasso and Banfi along longitudinal gradient in Limpopo Province, South Africa

    Mashile SP1,2, MP Tshisikhawe1

    Phyton-International Journal of Experimental Botany, Vol.84, No.2, pp. 473-477, 2015, DOI:10.32604/phyton.2015.84.473

    Abstract This paper looked at the leaf architecture characteristics of Vachellia tortilis to determine if either there is or not an effect of the tropic line on plants. Vachellia tortilis leaves were sampled along a national road (N1) in Limpopo province. Sampling points were set 10 km apart away from the Tropic of Capricon in opposite directions. Leaf morphology revealed that leaves of V. tortilis are bipinnately compound with alternate arrangement. The venation pattern of the pinnules was eucamptodromus and brochidodromous with imperfect reticulation. Areoles were imperfect and pentagonal or irregular in shape. More >

  • Open Access

    ARTICLE

    Onion yield as affected by plant density, nitrogen level and loss of leaf area

    Siliquini OA1, GA Orioli2, JC Lobartini2

    Phyton-International Journal of Experimental Botany, Vol.84, No.2, pp. 338-344, 2015, DOI:10.32604/phyton.2015.84.338

    Abstract Onion (Allium cepa) is an important horticulture crop because of its value as a food with a long shelf life being a relatively non-perishable product. It is very helpful to understand the growth response of the seeded onion crop to conduct appropriate field practices in attaining the highest or optimum yields. A three year field experiment was conducted using a variety of onion Valcatorce INTA, in a randomized block design with five replicates. Treatments were two plant densities and three rates of N application. The bulb growth followed a classical sigmoid curve. During the rapid growing More >

  • Open Access

    ARTICLE

    Fertilization effects with P on accumulated leaf area duration, biomass and yield of three cultivars of maize in Toluca, Mexico

    Díaz López E1, A Morales Ruíz1, EJ Vargas Ramírez1, P Hernández Herrera1, RC Reséndiz Melgar1, I Brena Hernández2, JM Loeza Corte2

    Phyton-International Journal of Experimental Botany, Vol.84, No.2, pp. 319-330, 2015, DOI:10.32604/phyton.2015.84.319

    Abstract The effect of six phosphorus levels (0, 40, 80, 120, 160 and 200 kg/ha) on the duration of cumulative leaf area, biomass and agronomic yield was determined in the maize cultivars: Amarillo Almoloya, Cacahuacintle and Condor in 2010 and 2011. Such cultivars were sown in the Cerrillo Piedras Blancas Mexico. A completely randomized complete block design with factorial arrangement was utilized. High phosphorus levels (120, 160 and 200 kg/ha) positively affected the duration of cumulative leaf area; greatest values were obtained in Cacahuacintle. A greater duration of accumulated leaf area contributes to determine high values More >

  • Open Access

    ARTICLE

    Contribution to knowledge of foliar anatomy on Mnesithea selloana (Hack.) de Koning & Sosef (Andropogoneae-Panicoideae-Poaceae)

    Moya ME1,2, AA Galussi1,2, MJ Gómez1,2, FG Marchese1,2

    Phyton-International Journal of Experimental Botany, Vol.84, No.1, pp. 176-183, 2015, DOI:10.32604/phyton.2015.84.176

    Abstract The aim of the present work was to analyze the foliar anatomy in lamina transverse section an in epidermis superficial view of Mnesithea selloana. Epidermic preparations and transections were carried out of the medium leaf part of sterile innovations that were conditioned and observed with optic microscope (OM) and scanning electron microscope (SEM).The histofoliar characteristics observed were: epidermic, intercostal, subsidiary, suberose, silicea and bulliform cells; and also guard cells, hairs, waxes, mesophylls, Kranz sheath, vascular bundles, sclerenchyma, colourless parenchyma and leaf margin. Epidermic observations showed that M. selloana presents a panicoid type epidermis presenting silicic cells as More >

  • Open Access

    ARTICLE

    Development and Characterization of the Midrib of Coconut Palm Leaf Reinforced Polyester Composite

    Neeraj Dubey1, Geeta Agnihotri1

    CMC-Computers, Materials & Continua, Vol.45, No.1, pp. 39-56, 2015, DOI:10.3970/cmc.2015.045.039

    Abstract In this paper, midrib of coconut palm leaves (MCL) was investigated for the purpose of development of natural fiber reinforced polymer matrix composites. A new natural fiber composite as MCL/polyester is developed by the hand lay-up method, and the material and mechanical properties of the fiber, matrix and composite materials were evaluated. The effect of fiber content on the tensile, flexural, impact, compressive strength and heat distortion temperature (HDT) was investigated. It was found that the MCL fiber had the maximum tensile strength, tensile modulus flexural strength, flexural modulus and Izod impact strength of 177.5MPa, More >

  • Open Access

    ARTICLE

    Leaf and stem anatomy of three halophytic Salicornieae (Chenopodiaceae) from Argentina

    Pérez Cuadra V y PM Hermann

    Phyton-International Journal of Experimental Botany, Vol.83, pp. 369-377, 2014, DOI:10.32604/phyton.2014.83.369

    Abstract Species belonging to the tribe Salicornieae (Chenopodiaceae), called jumes, are rich in salts, reflecting its halophytic nature. The leaf and stem anatomy of Allenfolfea patagonica, Heterostachys olivascens and H. ritteriana were studied. The material, collected in the Salitral de la Vidriera located 30 km from Bahia Blanca (Buenos Aires, Argentina), was fixed, dehydrated, embedded and stained with traditional techniques for plant anatomy. The foliar abaxial epidermis of the three species had papillate cells, while the adaxial one, usually did not. The stomata were sunken in the abaxial epidermis of the three species, and of the adaxial one… More >

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