Rodríguez-González RE¹, JJ Paz Hernández¹, CG Iñiguez Monroy³, EO Rueda Puente², L Avendaño-Reyes¹, M Cruz-Villegas¹, CE Ail-Catzim¹, M Stoycheva⁴, R Koytchev Zlatev⁴, P Renganathan², AM García López¹

Phyton-International Journal of Experimental Botany, Vol.83, pp. 65-70, 2014, DOI:10.32604/phyton.2014.83.065

Abstract The aim of this study was to evaluate grain yield (RG) stability of some commercial wheat varieties, and to assess the stability of other parameters which are not typically measured for grain release purposes: performance of straw (RP), weight per hectoliter (PH), white belly (PB), harvest index (IC), grain protein (PG) and gluten strength (W). The evaluation was performed with the wheat varieties Cachanilla F-2000 (C), Yécora F-70 (Y) and Triguenio F-00 (TR), in El Valle de Mexicali, Baja California under four test environments, with the application of the Eberhart and Russell model. The study More >

Zhu XJ^†, YF Hu^†, X Chen, YH Wang, WP Fang, XH Li

Phyton-International Journal of Experimental Botany, Vol.83, pp. 57-63, 2014, DOI:10.32604/phyton.2014.83.057

Abstract The purpose of this study was to evaluate the antagonistic activity of two endophytic fungal strains, Pseudocercospora kaki and Penicillium sclerotiorum, isolated from the leaves of Camellia sinensis, against the rice blast pathogen Magnaporthe grisea. The inhibitory activity of the two endophytes against M. grisea in dual-culture was compared with that in monoculture. It was confirmed that the broth and its ethyl acetate extract of the dual-culture had a much stronger inhibition activity against M. grisea than the monocultures of P. kaki and P. sclerotiorum. The antagonism index of the broth and ethyl acetate extract from dual-culture to the mycelial growth of M. grisea… More >

Hernández-Castillo FD¹, RH Lira-Saldivar², G Gallegos-Morales¹, M Hernández-Suárez¹, S Solis-Gaona²

Phyton-International Journal of Experimental Botany, Vol.83, pp. 49-55, 2014, DOI:10.32604/phyton.2014.83.049

Abstract One of the most severe phytosanitary problems that face chili pepper producers in Mexico, and in many other parts of the world, is the disease known as "secadera" or wilting, caused by diverse pathogens. These patogens are mainly controlled with synthetic pesticides, thus causing a severe ecological impact, toxicity to humans, generation of plant resistance to fungicides, and increments of production costs. Because of this, it rises the need of finding more environmentally friendly options. We evaluated rhizospheric bacteria as a possible biological control of pepper wilt. We used three bacterial strains belonging to the Bacillus More >

Ruiz SE, AJ Cristóbal, RA Reyes, SJ Tun, RA García, AJ Pacheco

Phyton-International Journal of Experimental Botany, Vol.83, pp. 45-47, 2014, DOI:10.32604/phyton.2014.83.045

Abstract The antagonistic activity of native Bacillus subtilis strains from Yucatán peninsula soils were evaluated on two soilborne pathogens. Bacillus subtilis cbck36 and cbrf24 caused more than 60% inhibition of colony growth in Machophomina phaseolina. Cell-free culture filtrate of B. subtilis cbr24 were active against second- stage juveniles (J2) of Meloidogyne incognita (LC₅₀ 25.8% v/v). More >

García-Pereyra J¹, GN Aviña-Martínez¹, AA Orozco-Flores², OG Alvarado-Gómez³, M García-Montelongo⁴, G Alejandre-Iturbide⁵, JN Uribe-Soto⁵, H Medrano-Roldan⁶

Phyton-International Journal of Experimental Botany, Vol.83, pp. 37-43, 2014, DOI:10.32604/phyton.2014.83.037

Abstract It was analyzed the genetic variability of (1) three strains of a pathogenic fungi of the genus Metharhizium anisopliae var anisopliae, named MA22, MA24 and MA25, brand spesifik^®; (2) two strains of the product Metasaven^®, named MA1A and MAII; one strain of the product Metatron^®; and a native strain named MACN. This latter strain was directly isolated from the insect chapulin (Brachystola magna), from the farmer, corn plots in Durango, located in north central Mexico. Studies were conducted in the laboratory of molecular biology of the Technological Institute of the Valley of Guardiana in Durango, Mexico, from… More >

Astiz V¹, LF Hernández^2,3

Phyton-International Journal of Experimental Botany, Vol.83, pp. 27-36, 2014, DOI:10.32604/phyton.2014.83.027

Abstract The intra-plant pollen production in cultivated sunflower (Helianthus annuus L.) was quali- and quantitatively studied. Two modern self-pollinated, high oleic sunflower hybrids were grown during two consecutive seasons: 2009 in three planting dates, and 2010 in two planting dates. Two cross-pollinated varieties of sunflower, Hopi and Havasupai, were also studied to determine if an anomalous intracapitulum pollen gradient observed in preliminary studies could be a remnant character inherited from primitive genotypes. Pollen grains per flower (PGF), anther volume (AV), pollen grain volume (PGV) and pollen viability (PV) were measured in three capitulum sectors, external (ES), middle… More >

Santander F¹, C Fredes¹, G Nuñez¹, G Casaubon², MI Espinoza², G Montenegro¹

Phyton-International Journal of Experimental Botany, Vol.83, pp. 17-26, 2014, DOI:10.32604/phyton.2014.83.017

Abstract Currently, the search for chemical markers related to the botanical origin of honey is an important issue because of its potential use as a complementary tool for melisopalinological analysis. The objective of this research was to compare the (1) volatile compounds of Quillaja saponaria Mol. (Fam. Quillajaceae) floral nectar with those of unifloral honey of this same species, and (2) volatile compounds in Q. saponaria honeys from the same geographical origin. For the identification and semiquantification of volatile compounds, Gas Chromatography with Mass Spectrometry (GC-MS) was performed. The nectar of Q. saponaria presented volatile compounds different from the… More >

Bianchimano AS¹, MG Murray^2,3, ME Aztiria¹, B Montes^2,3, ML Calfuán², MI Prat¹

Phyton-International Journal of Experimental Botany, Vol.83, pp. 9-15, 2014, DOI:10.32604/phyton.2014.83.009

Abstract Chenopodium album is a very polymorphic, cosmopolitan, annual herb that grows spontaneously in modified soils in wasteland in the outlying urban zones of Bahía Blanca. In this city, the flowering period is mainly during February and March, which coincides with the highest concentrations of this pollen type in the atmosphere of the city. The objective of this study was to characterize the pollen grains of Chenopodium album, both morphologically and immunochemically, that were obtained from three different zones in the urban area of Bahía Blanca. Samples were collected from the three separate zones in the city that… More >

E. Sincich¹, B. Šarler^1,2,3

CMES-Computer Modeling in Engineering & Sciences, Vol.99, No.5, pp. 393-415, 2014, DOI:10.3970/cmes.2014.099.393

Abstract In this paper, a solution of a two-dimensional (2D) Stokes flow problem, subject to Dirichlet and fluid traction boundary conditions, is developed based on the Non-singular Method of Fundamental Solutions (NMFS). The Stokes equation is decomposed into three coupled Laplace equations for modified components of velocity, and pressure. The solution is based on the collocation of boundary conditions at the physical boundary by the fundamental solution of Laplace equation. The singularities are removed by smoothing over on disks around them. The derivatives on the boundary in the singular points are calculated through simple reference solutions. More >

R. Jegadeeshwaran¹, V. Sugumaran², K.P. Soman³

Structural Durability & Health Monitoring, Vol.10, No.1, pp. 81-97, 2014, DOI:10.3970/sdhm.2014.010.081

Abstract In automobile, brake system is an essential part responsible for control of the vehicle. Vibration signals of a rotating machine contain the dynamic information about its health condition. Many research papers have reported the suitability of vibration signals for fault diagnosis applications. Many of them are based on (Fast Fourier Transform) FFT, which have their own drawback with nonstationary signals. Hence, there is a need for development of new methodologies to infer diagnostic information from such non stationary signals. This paper uses vibration signals acquired from a hydraulic brake system under good and simulated faulty… More >