Zhang¹ WD, DS Liu², JC Tian^1*, FL He¹

Phyton-International Journal of Experimental Botany, Vol.78, pp. 147-154, 2009, DOI:10.32604/phyton.2009.78.147

Abstract Soil arsenic contamination becomes a potential agricultural and environmental hazard worldwide, and has been a serious problem for safe food production. A field experiment on soil contamination was conducted on four wheat varieties (Jimai, Gaoyou, Weimai and Wennong) in Eastern China, using 50 or 100 mg arsenic/kg soil. Biomass production and yield components were determined and arsenic concentrations were measured in plant tissues. Differential arsenic effects on wheat varieties were determined at maturity. Results showed that addition of arsenic significantly (p<0.05) reduced root, stem and spike dry weight and yield components, which resulted in the decrease of grain yield per… More >

Lutz EE, HD Merchán, AE Morant

Phyton-International Journal of Experimental Botany, Vol.77, pp. 217-223, 2008, DOI:10.32604/phyton.2008.77.217

Abstract Forage and grain production of an early sown, long-cycle wheat variety (ProINTA Super) was compared to that in its association with a short-cycle wheat variety (Buck Pronto), both varieties exposed to one or two defoliations. The purpose was producing an earlier and greater amount of dry matter in a dual-purpose wheat. Research was conducted in the Asociación de Cooperativas Argentinas experimental field (38º 36´ S, 61º 58´ W, 122 masl), 15 km SW from Cabildo (Bs. As), in the semi-arid V South wheat subregion. Experimental plots, 7 rows 4m long each and 0,20 m apart from each other, were seeded… More >

Merchán HD, EE Lutz, AE Morant

Phyton-International Journal of Experimental Botany, Vol.76, pp. 133-142, 2007, DOI:10.32604/phyton.2007.76.133

Abstract In mixed systems (beef and grain), double purpose wheat is an alternative to reduce competition between the winter cereals for grazing and wheat for harvesting. In order to optimize grass production and avoid grain yield decreases, it is necessary to use varieties with long vegetative periods and the last defoliation should be made before the apex changes to the reproductive developmental stage. A study was conducted in the experimental field of the Asociación de Cooperativas Argentinas in Cabildo (38º 36' S, 61º 58' W) to evaluate grass and grain production of the facultative wheat variety (Triticum aestivum L) Buck Charrúa,… More >

Morant AE, HD Merchán, EE Lutz

Phyton-International Journal of Experimental Botany, Vol.76, pp. 95-102, 2007, DOI:10.32604/phyton.2007.76.095

Abstract Length of the vegetative period and forage production were evaluated in ten commercial, long term cycle wheat varieties: Buck Charrúa, Cooperación Nanihué, Buck Cacique, Cooperación Maipún, Buck Catriel, ProINTA Pigüé, Buck Poncho, ProINTA Pincén, ProINTA Super and Cooperación Liquén. The study was conducted in the experimental field of the Departmento de Agronomia, Universidad Nacional del Sur, Bahía Blanca, Argentina, under dry land conditions. A completely Randomized Block Design with five replicates was used. Seeding was effected on 9 April 1996. From the time the plant had three leaves to the Double Ridge (DA) apex stage, the apex development, tiller number… More >

Lutz EE, HD Merchán, AE Morant^*

Phyton-International Journal of Experimental Botany, Vol.75, pp. 85-89, 2006, DOI:10.32604/phyton.2006.75.085

Abstract Management of a double purpose wheat is not easy. Therefore, a simpler management alternative was studied: the mixture of two wheat varieties, one of long- cycle and the other one of short-cycle. Research was effected in the experimental field of the Asociación of Cooperativas Argentinas (38º 36´S, 61º 58´O and 122 m asl), 15 Km SW of Cabildo (Bs. As), in the semi-arid wheat subregion V S. At this place, forage and grain production of a suitable double-purpose wheat (ProINTA Pincén) was compared to its mixture with a short-cycle variety (Cooperación Calquín), either in the same or alternating rows. Forage… More >

Merchán HD, EE Lutz, AE Morant^*

Phyton-International Journal of Experimental Botany, Vol.75, pp. 41-46, 2006, DOI:10.32604/phyton.2006.75.041

Abstract In the mixed systems (beef and grain) of the semiarid Pampa, double purpose wheat use might diminish competition by the soil resource, external inputs into the system and money, which are often associated between winter cereals for grazing and/or grain harvest. In the experimental station of the Asociación de Cooperativas Argentinas in Cabildo (wheat semiarid subregion V S), a trial to evaluate shoot and grain production was conducted. The wheat (Triticum aestivum L.) variety Buck Charrúa, commercially recommended for double purpose use was utilized. Grain production of autumn-sown plots, which were defoliated 0, 1, 2 or 4 times, was compared… More >

MARIANA N. MELCHIORRE, HERNÁN R. LASCANO, VICTORIO S.TRIPPI

BIOCELL, Vol.26, No.2, pp. 217-223, 2002, DOI:10.32604/biocell.2002.26.217

Abstract Wheat (Triticum aestivum) transgenic plants of an important commercial cv (Oasis) was obtained with an efficient and short procedure. First, the optimum conditions for the embriogenic calli generation from inmature embryos with a high regeneration percentage were established. The transformation of calli was performed by high velocity microprojectile bombardment, using the pAHC25 plasmid, which contains the reporter gene β-glucuronidase (GUS) and the selectable BAR gene which confers resistance to the herbicide Basta. The transformations were confirmed by β-glucuronidase assay activity, PCR and Southern blot analysis. The efficiency of this procedure was high and similar to other reports in which “model”… More >

Mohd Imran Ansari^1,*, Syed Fahad Anwer¹

FDMP-Fluid Dynamics & Materials Processing, Vol.14, No.4, pp. 259-279, 2018, DOI:10.32604/fdmp.2018.03891

Abstract We have conducted a numerical study to investigate the relationship between the aerodynamic performance of an insect wing section and the effect of corrugation in gliding flight. In particular, an Airfoil-CR, corresponding to Kesel’s Profile 2 (Kesel, Journal of Experimental Biology, vol. 203, 2000), has been used. This profile represents exactly the cross section of the so-called “Aeshna cyanea”. A smoothed variant of this profile (referred to in the present study as Airfoil-SM) has also been considered. Introducing five different variants of the Airfoil-CR corresponding to different levels of corrugation, namely M1, M2, M3, M4 and M5, an unsteady fluid… More >

Hong-Hua Dai^1,2, Jeom Kee Paik³, S. N. Atluri²

CMC-Computers, Materials & Continua, Vol.23, No.2, pp. 155-186, 2011, DOI:10.3970/cmc.2011.023.155

Abstract The application of the Galerkin method, using global trial functions which satisfy the boundary conditions, to nonlinear partial differential equations such as those in the von Karman nonlinear plate theory, is well-known. Such an approach using trial function expansions involving multiple basis functions, leads to a highly coupled system of nonlinear algebraic equations (NAEs). The derivation of such a system of NAEs and their direct solutions have hitherto been considered to be formidable tasks. Thus, research in the last 40 years has been focused mainly on the use of local trial functions and the Galerkin method, applied to the piecewise… More >

Hong-Hua Dai^1,2, Jeom Kee Paik³, Satya N. Atluri²

CMC-Computers, Materials & Continua, Vol.23, No.1, pp. 69-100, 2011, DOI:10.3970/cmc.2011.023.069

Abstract In this paper, the global nonlinear Galerkin method is used to perform an accurate and efficient analysis of the large deflection behavior of a simply-supported rectangular plate under combined loads. Through applying the Galerkin method to the governing nonlinear partial differential equations (PDEs) of the plate, we derive a system of coupled third order nonlinear algebraic equations (NAEs). However, the resultant system of NAEs is thought to be hard to tackle because one has to find the one physical solution from among the possible multiple solutions. Therefore, a suitable initial guess is required to lead to the real solution for… More >