Effect of imazamox plus bentazon on dry bean (Phaseolus vulgaris L.)     

Sharareh Hekmat  Nader Soltani  Christy Shropshire  Peter H. Sikkema 《Crop Protection》2008,27(12):1491-1494

Imazamox plus bentazon has the potential to provide broad spectrum weed control in dry bean (Phaseolus vulgaris L.). Field trials were conducted in Ontario over a two year period (2003 and 2006) to evaluate the effect of imazamox plus bentazon applied post-emergence at 25 + 600 and 50 + 1200 g ai ha⁻¹ on black, brown, cranberry, kidney, otebo, pinto, white and yellow eye beans. Treatments included a non-treated check. All treatments were maintained weed free during the growing season. The eight market classes responded similarly to imazamox plus bentazon. Imazamox plus bentazon applied post-emergence caused less than 4% visible injury at 7, 14 and 28 days after treatment. Imazamox plus bentazon applied post-emergence did not have any effect on plant height, shoot dry weight, seed moisture content and yield of dry bean. Based on these results, imazamox plus bentazon at the proposed maximum use dose can be safely used for weed management in black, brown, cranberry, kidney, otebo, pinto, white and yellow eye bean production in Ontario. Additional research is needed to determine if cultivars within a market class of dry bean differ in their response to imazamox plus bentazon.  相似文献   

Development of Rose Bengal test against mallein test for rapid diagnosis of equine glanders     

Karimi  Amin  Mosavari  Nader 《Tropical animal health and production》2019,51(7):1969-1974

Tropical Animal Health and Production - Burkholderia mallei, the etiologic agent of the disease known as glanders. Clinical and bacteriological diagnosis of glanders is difficult in the early...  相似文献   

Identification and differentiation of soft rot and blackleg bacteria from potato using nested and multiplex PCR     

Ashmawy  Nader A.  El-Bebany  Ahmed F.  Shams  Amany H. M.  Shoeib  Alia A. 《植物病害和植物保护杂志》2020,127(2):141-153

Journal of Plant Diseases and Protection - The bacterial genera Pectobacterium, Dickeya and Enterobacter are plant pathogens that cause soft rot and blackleg of potato. In the present study, 25...  相似文献   

Cloning and expression of coxsakievirus B3 viral protein-1 in E. coli     

Maghsoudi N  Khalilpour A  Kamali M  Zeinoddini M 《Iranian Biomedical Journal》2007,11(3):147-152

BACKGROUND: Viral protein-1 (VP1) is a major capsid protein of Coxsakievirus B3 (CVB3) that plays an important role in directing viruses towards permissive cells and acts as a main antigenic site of the virus in eliciting of host immune response, hence it seems VP1 can be considered as a vaccine candidate against CVB3 infection. In this study, cDNA of VP1 was prepared, cloned into pET expression vector and the recombinant protein (VP1) was over expressed in E. coli. METHODS: The viruses were grown in suspension cultures of Vero cells with an input virus multiplicity of 10-50 plaque-forming units/cell. After observing complete cytopathic effect, the total RNA (cells and virus) was prepared for RT-PCR and by using specific primers, VP1 cDNA was amplified and ligated into pET vectors (32 a and 28 a). The recombinant vector was transferred into competent E. coli (BL-21) and after selection of proper colony, which carried correct cDNA within the vector; cells were cultured and induced with isopropyl B-D-thiogalactopyranoside, in order to express protein (VP1). The cultures were tested for presence of VP1 by SDS-PAGE and Western-Blotting analysis. RESULTS: Molecular techniques such as PCR which showed exact defined size of the VP1 (819 bp), restriction digestion and finally immunoblot analysis of over expressed protein; all confirmed the correct cloning and expression of VP1 in this research. CONCLUSION: In this research, full length of VP1 as major capsid protein of CVB3 was over expressed in E. coli which, can be used for further studies, including neutralizing antibody production against CVB3.  相似文献   

Reciprocal cellular and humoral immune responses in bovine tuberculosis   总被引：7，自引：0，他引：7  

V. Ritacco  B. Lopez  I.N. De Kantor  L. Barrera  F. Errico  A. Nader 《Research in veterinary science》1991,50(3):8-367

A sandwich ELISA for the detection of gamma interferon showed higher sensitivity and specificity than an indirect ELISA for mycobacterial antibodies in the diagnosis of bovine tuberculosis. Circumstantial evidence of an inverse relationship between cellular and humoral immune responses to Mycobacterium bovis was found in cattle with natural infection.  相似文献   

Using the CERES-Maize model in a semi-arid Mediterranean environment. Evaluation of model performance   总被引：1，自引：0，他引：1  

Bchir Ben Nouna  Nader Katerji  Marcello Mastrorilli 《European Journal of Agronomy》2000,13(4):309-322

The CERES-Maize model was tested in a semi-arid Mediterranean environment during a period of 2 years under three different soil moisture conditions (well-watered and two limited irrigation regimes). In well-watered plots, growth and yield were adequately simulated by the model (differences between simulated values and observations were less than 10%). Results suggest that the absence of air humidity among the model inputs does not limit the CERES-Maize performance, even under dry-air conditions. On the contrary, under mild soil water shortage, CERES-Maize underestimated the leaf area index (LAI) (up to 26% for maximum LAI), above-ground biomass (up to 23%) and grain yield (up to 15%). Mismatches between observations and predictions increased with water stress level (by up to 46, 29 and 23% for maximum LAI, biomass and grain yield, respectively). It is suggested that the functions describing leaf growth and senescence and those calculating the soil water deficit functions should be modified to adapt CERES-Maize to Mediterranean environments.  相似文献   

Dietary astaxanthin modulated the performance,gastrointestinal histology,and antioxidant and immune responses and enhanced the resistance of Litopenaeus vannamei against Vibrio harveyi infection     

Eldessouki  Elsayed A. A.  Diab  Amany M.  Selema  Talal A. M. Abo  Sabry  Nader M.  Abotaleb  Mahmoud M.  Khalil  Riad H.  El-Sabbagh  Nasser  Younis  Nehal A.  Abdel-Tawwab  Mohsen 《Aquaculture International》2022,30(4):1869-1887

Aquaculture International - Astaxanthin (AX) is one of the commonly used feed supplements to enhance the growth performance and provide antioxidant and immune functions of several aquatic animals....  相似文献   

Identifying superior rainfed barley genotypes in farmers’ fields using participatory varietal selection     

Reza Mohammadi  Kouresh Nader Mahmoodi  Reza Haghparast  Stefania Grando  Maryam Rahmanian  Salvatore Ceccarelli 《Journal of Crop Science and Biotechnology》2011,14(4):281-288

This study was carried out to identify superior barley genotypes for the rainfed areas of western Iran using a participatory varietal selection (PVS) approach. Three field experiments were conducted in two randomly selected farmers’ fields and in one rainfed research station in the 2006–07 cropping season with 69 genotypes (including one local and one improved check). Several univariate and multivariate methods were used to analyze qualitative (farmers’ scores) and quantitative (grain yield) data. Individual farmers’ scores in each village were positively correlated, indicating that the farmers tended to discriminate genotypes in similar fashion, although the genotypes actually selected by farmers were different in the two villages. In recent years, a greater number of farmers in western Iran preferred the improved variety (Sararood-1) over the local barley (Mahali), while in this project the farmers preferred the new genotypes over the two checks. This was also verified by the quantitative data showing that the checks were outyielded by the new genotypes. Farmers were efficient in identifying the best genotypes for their specific environment, as shown by biplot analysis, indicating their competence in selection. The genotypes selected by the breeder and farmers were almost similar but some differences existed. In conclusion, PVS is a powerful way to involve farmers for selecting and testing new cultivars that are adapted to their needs, systems and environments.  相似文献   

Improvement in estimation of soil water retention using fractal parameters and multiobjective group method of data handling     

Mohammad Reza Neyshaburi  Hossein Bayat  Kourosh Mohammadi  Nader Nariman-Zadeh  Mahdi Irannejad 《Archives of Agronomy and Soil Science》2013,59(2):257-273

Soil water retention characteristic is required for modeling of water and substance movement in unsaturated soils and need to be estimated using indirect methods. Point pedotransfer functions (PTFs) for prediction of soil water content at matric suctions of 1, 5, 25, 50, and 1500 kPa were developed and validated using a data-set of 148 soil samples from Hamedan and Guilan provinces, Iran, by multiobjective group method of data handling (mGMDH). In addition to textural and structural properties, fractal parameters of the power-law fractal models for both particles and aggregates distributions were also included as predictors. Their inclusion significantly improved the PTFs’ accuracy and reliability. The aggregate size distribution fractal parameters ranked next to the particle size distribution (PSD) in terms of prediction accuracy. The mGMDH-derived PTFs were significantly more reliable than those by artificial neural networks but their accuracies were practically the same. Similarity between the fractal behavior of particle and void size distributions may contribute to the improvement of the derived PTFs using PSD fractal parameters. It means that both distributions of the pore and particle size represent the fractal behavior and can be described by fractal models.  相似文献   

Shoot growth,plant tissue elemental composition,and soil salinity following irrigation of alfalfa and tall fescue with high‐sulfate waters 1     

Jennifer W. MacAdam  Daniel T. Drost  Lynn M. Dudley  Nader Soltani 《Journal of plant nutrition》2013,36(9):1137-1153

Groundwater contaminated with sulfate (SO₄ ^2‐) at concentrations higher than allowable for drinking water might still be usable for irrigation. Objectives were to determine the growth response and mineral uptake of two forage crops irrigated with waters containing SO₄ ^2‐ at concentrations ranging from 175 to 1743 mg/L, and with electrical conductivities (EC) ranging from 1.2 to 3.6 dS/m. Plants were grown for 12 weeks in 8‐L pots containing a calcareous sandy loam and were harvested at 4, 8, or 12 weeks for plant growth measurements and tissue analysis. Digested leaves, stems, and reproductive tissues were analyzed by inductively coupled plasma (ICP) spectroscopy at each harvest, as were saturated soil paste extracts. Shoot growth of tall fescue (Festuca arundinacea Schreb.) was not affected by irrigation water treatment, whereas shoot growth of alfalfa (Medicago sativa L.) was increased by a moderate level of soil solution SO₄ ^2‐ Sulfur (S), boron (B), magnesium (Mg), sodium (Na), and zinc (Zn) concentrations in shoot tissues of both species showed a tendency to increase with increasing SO₄ ^2‐ content of irrigation water. Shoot tissue concentration of molybdenum (Mo) increased with maturation in both species, while the concentrations of B, potassium (K), manganese (Mn), Na, and Zn decreased. Soil saturated paste extract concentrations of Mg and Na increased with irrigation water Mg and Na concentrations, while Ca and S concentrations in the soil solution became saturated at the higher irrigation water concentrations of these elements.  相似文献