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  • Open Access

    ARTICLE

    Genetic analysis for quantitative traits in bread wheat exposed to irrigated and drought stress conditions

    Ataei R1, M Gholamhoseini1, M Kamalizadeh2

    Phyton-International Journal of Experimental Botany, Vol.86, pp. 228-235, 2017, DOI:10.32604/phyton.2017.86.228

    Abstract Understanding the genetic control of traits associated with yield helps breeders to utilize their germplasm in a more efficient and consistent manner and to make good choices in breeding programs. The current study was carried out to study the genetic control of some quantitative traits in bread wheat (Triticum aestivum L.) and to examine plant responses under full irrigation and drought stress conditions. For this purpose, six generations derived from a cross between two lines (Bezostaya as tolerant parent and 518 as a susceptible parent) were evaluated for grain yield (GY), plant height (PH), peduncle (PL)… More >

  • Open Access

    ARTICLE

    Quantitative trait loci associated with water deficit tolerance in Arabidopsis thaliana (L.) Heynh.

    Gutiérrez-Díez A1, GE Salinas-García1, L Iracheta-Donjuan2, JA Torres-Castillo1, N Mayek-Pérez3

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 203-208, 2013, DOI:10.32604/phyton.2013.82.203

    Abstract Gene and quantitative trait loci (QTLs) localization in a model species allow to know their organization in the genome, and the possibility for the isolation and cloning of genes with agronomic importance. Seventy-three recombinant inbred lines (RILs) derived from the cross of Arabidopsis thaliana (L.) Heynh. ecotypes Columbia (Col) x Landsberg erecta (Ler) were grown in a greenhouse under contrasting soil moisture conditions (irrigated and water deficits). During their growth, some phenological (days to flowering) and plant growth traits (plant height, and number of nodes and leaves per plant) were measured. Significant differences for plant height More >

  • Open Access

    ARTICLE

    Quantitative Identification of Multiple Cracks in a Rotor Utilizing Wavelet Finite Element Method

    Bing Li1,2, Hongbo Dong1

    CMES-Computer Modeling in Engineering & Sciences, Vol.84, No.3, pp. 205-228, 2012, DOI:10.3970/cmes.2012.084.205

    Abstract Different from single crack identification method, the number of cracks should be firstly identified, and then the location and depth of each crack can be predicted for multiple cracks identification technology. This paper presents a multiple crack identification algorithm for rotor using wavelet finite element method. Firstly, the changes in natural frequency of a structure with various crack locations and depths are accurately obtained by means of wavelet finite element method; and then the damage coefficient method is used to determine the number and region of cracks. Finally, by finding the points of intersection of More >

  • Open Access

    ABSTRACT

    Quantitative nondestructive tests of defects with optical methods

    Xide Li

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.20, No.1, pp. 13-14, 2011, DOI:10.3970/icces.2011.020.013

    Abstract The quantitatively assessment of defect characteristic parameters (DCP), such as coordinates, size, embedding depth and type of defects in structures or materials, is becoming increasingly important. One reason is for economy and safety, and the other for a defect in structures may lead to failure while it is growing to a critical size. Therefore, it is possible to estimate both remaining life of structures and extent of the degradation by knowing the dimensions of defects presenting in structures. In this paper, several research topics on quantitative detection of the DCP in our group are reviewed… More >

  • Open Access

    ARTICLE

    Turbulentlike Quantitative Analysis on Energy Dissipation in Vibrated Granular Media

    Zhi Yuan Cui1, Jiu Hui Wu1, Di Chen Li1

    CMES-Computer Modeling in Engineering & Sciences, Vol.71, No.2, pp. 149-156, 2011, DOI:10.3970/cmes.2011.071.149

    Abstract A quantitative rule of the vibrated granular media's energy dissipation is obtained by adopting the turbulence theory in this letter. Our results show that, similar to the power spectrum in fully developed fluid turbulence as described in Kolmogorov's theory, the power spectrum of vibrated granular media also exhibits a k - 5 / 3 (k is the wave number) power which characterizes the local isotropic flow. What's more, the mean energy dissipation rate in vibrated granular media rises with the increase of particle size and volume ratio. The theoretical results in this letter can be More >

  • Open Access

    ARTICLE

    Quantitative measures of leaf epidermal cells as a taxonomic and phylogenetic tool for the identification of Stanhopea species (Orchidaceae)

    Foroughbakhch R, RJ Ferry Sr, JL Hernández-Piñero, MA Alvarado-Vázquez, A Rocha-Estrada

    Phyton-International Journal of Experimental Botany, Vol.77, pp. 113-127, 2008, DOI:10.32604/phyton.2008.77.113

    Abstract Orchids of the genus Stanhopea are currently identified only by their floral structure characteristics. A statistical analysis of a significant number of species of this genus disclosed that measurements of adaxial and abaxial epidermal cell surface areas can be correlated with specific recognized species by a leaf printing method. This allows an objectively either positive or nearly positive confirmation of the identity of a species in the absence of flowers and without damage to plants. When ordering the mean values obtained for these surface areas in each species in a decreasing order, a correlation was observed More >

  • Open Access

    ARTICLE

    Morphoquantitative evaluation of the duodenal myenteric neuronal population in rats fed with hypoproteic ration

    MARIA RAQUEL MARÇAL NATALI, SONIA LUCY MOLINARI, LUIZ CRISTIANO VALENTINI, MARCÍLIO HUBNER DE MIRANDA NETO.

    BIOCELL, Vol.29, No.1, pp. 39-46, 2005, DOI:10.32604/biocell.2005.29.039

    Abstract The purpose of this work was to analyze the morphoquantitative behavior of the neurons of the myenteric plexus, as well as the morphometry of the duodenal wall, in adult rats fed with normoproteic (22%) and hypoproteic (8%) rations, killed at the age of 345 days. For neuronal assessments duodenal wholemounts stained with the Giemsa method were used, and for the evaluation of the duodenal wall routine histological processing and staining with Hematoxilin-Eosin were employed. The means of the number of neurons in 80 microscopic fields (12.72 mm2 ) and of the size of the neuronal cell More >

  • Open Access

    ARTICLE

    Histomorphological and quantitative immunohistochemical changes in the rat pancreas during aging

    F.L. RICCILLO, M.I. BRACAMONTE, G.M. CÓNSOLE, C.L.A. GÓMEZ DUMM

    BIOCELL, Vol.28, No.2, pp. 127-134, 2004, DOI:10.32604/biocell.2004.28.127

    Abstract Although the endocrine pancreas is the purpose of several deep investigations, morphological data referred to the effect of aging on the gland are not homogeneous. The purpose of the current work was to analyze the changes occurring in the pancreas of aged rats, with especial reference to the islet cell populations. Six young (Y), old (O) and senescent (S) male Sprague-Dawley rats were used. The pancreas tails were processed for light microscopy and studied by means of routine stains as well as by immunohistochemical identification of insulin-, glucagon-, somatostatin-, and pancreatic polypeptide- secreting cells (Dako… More >

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