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  • 1
    Electronic Resource
    Electronic Resource
    Genetic analysis of partial resistance to bacterial leaf streak (Xanthomonas campestris pv. cerealis) in wheat (1996)
    Oxford, U.K. and Cambridge, USA : Blackwell Science
    Plant pathology 45 (1996), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Genetic variability of partial resistance to bacterial leaf streak was investigated in hexaploid winter wheat (Triticum aestivum.), using 16 parental genotypes and 48 pure lines (F10) derived from a composite cross programme. Two experiments were undertaken in a controlled growth chamber. Seeds of all genotypes were grown under controlled conditions using a randomized block design with three replications. Each replication consisted of a row of 20 seedlings of each parent and pure line. An Iranian strain of bacterial leaf streak was used for the inoculation of 12-day-old seedlings. In a third experiment, eight genotypes from parents and F10 pure lines representing a large variability for partial resistance were inoculated with four other Iranian strains of bacterial leaf streak. A large genetic variability was observed amongst the 64 genotypes for partial resistance to the disease. Partial resistance heritability estimates were rather high (70%), indicating that the resistance factors may be transmitted by crossing. Amongst all genotypes investigated, ‘DC2-30-N2’ and ‘IBPT-66’ displayed the highest partial resistance to the disease. Significant correlations between strains in the third experiment show that a genotype resistant or susceptible to one strain will have similar reactions with other strains. No significant genetic gain was observed for partial resistance in the best pure line of the 48 lines studied, when compared with the best parental line. Increasing the number of pure lines is likely to result in the identification of genotypes that might prove to be more resistant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3059.1996.d01-166.x
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  • 2
    Electronic Resource
    Electronic Resource
    Genetic Analysis for Partial Resistance to an Iranian Strain of Bacterial Leaf Streak (X. campestris pv. hordei) in Barley (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 113 (1994), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Seven barley genotypes with high genetic variability for resistance to bacterial leaf streak (Xanthomonas campestris pv. hordei) were crossed in diallel fashion to determine the inheritance of resistance to this disease. Two experiments were undertaken in a controlled growth chamber using a complete-block design with four replicates. Each replicate consisted of a row of 20 seedlings per parent or F1 hybrid. An Iranian strain of bacterial leaf streak was used for inoculation of 12-day-old seedlings. Results showed that the cultivars ‘Express’ and ‘Morex’ and the Iranian pure line Iran-3a had a high partial resistance in booth experiments. Diallel analysis showed highly significant general and specific combining abilities. ‘Morex’ and Iran-3a were the best combiners for partial resistance to bacterial leaf streak in barley and could be successfully used for breeding purposes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1994.tb00743.x
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  • 3
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    Elymaean Occupation of Lower Khuzestan during the Seleucid and Parthian Periods: A Proposal (1985)
    Leiden : Periodicals Archive Online (PAO)
    Iranica antiqua. 20 (1985) 175 
    Details
    ISSN: 0021-0870
    Topics: Archaeology
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:d133-1985-020-00-000006
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  • 4
    Electronic Resource
    Electronic Resource
    Studies on the Relationship Between Haemoglobin Types of Adult Dromedary Camels and the Concentrations of Haemoglobin, Copper, Ceruloplasmin and Iron (2000)
    Springer
    Comparative clinical pathology 10 (2000), S. 122-125 
    Details
    ISSN: 1433-2981
    Keywords: Key words:Ceruloplasmin – Copper – Dromedary camel – Haemoglobin type – Iron
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract: The relationship between haemoglobin types of adult dromedary camels and the concentrations of haemoglobin, copper, ceruloplasmin and iron were studied. Blood samples were taken from the jugular vein of 100 clinically healthy Iranian dromedary camels according to their age (1–2, 2–4, 4–6 and 〉6 years) and sex. Haemoglobin electrophoresis showed two haemoglobin types: HbA (95.2%) and HbA2 (4.8%). Age and sex had no significant effect on haemoglobin types nor on the concentrations of haemoglobin, copper, ceruloplasmin and iron. There was no correlation between the concentrations of haemoglobin, copper, iron, ceruloplasmin, HbA and HbA2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005800070002
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  • 5
    Electronic Resource
    Electronic Resource
    The theory of the Taylor dispersion technique for liquid diffusivity measurements (1980)
    Springer
    International journal of thermophysics 1 (1980), S. 243-284 
    Details
    ISSN: 1572-9567
    Keywords: diffusion coefficient ; liquid mixtures ; Taylor dispersion ; liquid diffusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper presents a complete analysis of the theory of an instrument to measure the diffusion coefficients in liquid mixtures based upon the phenomenon of Taylor dispersion. The analysis demonstrates that it is possible to design an instrument that operates very nearly in accordance with the simplest mathematical description of the dispersion of a solute pulse in a fluid in laminar flow within a straight, circular cross-section tube. The small departures of a practical instrument from the ideal are evaluated as corrections by means of a general perturbation treatment that allows them to be examined one at a time. The corrections considered include the effects of the finite volume of the injection pulse, the finite volume of the concentration monitor, the coiling of the tube, and the nonuniformity and noncircularity of the cross section, as well as the variation of the fluid properties with composition. All the equations necessary for the design of an instrument of this type, and for the evaluation of experimental data free from significant systematic errors, are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00517126
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  • 6
    Electronic Resource
    Electronic Resource
    Mutual diffusion coefficients for binary mixtures of normal alkanes (1982)
    Springer
    International journal of thermophysics 3 (1982), S. 307-323 
    Details
    ISSN: 1572-9567
    Keywords: diffusion coefficient ; hydrocarbons ; liquid mixtures ; Taylor dispersion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper describes the design and operation of a new instrument for the measurement of diffusion coefficients in liquid mixtures. The instrument employs the principle of Taylor dispersion and has been designed so that it operates as nearly as possible in accordance with the simplest possible mathematical description of the measurement process. The remaining departures from the simple description are accommodated by means of small corrections which have been evaluated from a detailed theory of a practical instrument so that accurate measurement of diffusion coefficients may be performed. The apparatus has been employed to make a series of measurements of the mutual diffusion coefficient of binary mixtures among the normal alkanes hexane, heptane, and octane. The measurements have been performed at atmospheric pressure in the temperature range 290–340 K and over the entire range of mixture composition. It is estimated that the experimental data have an associated uncertainty of ±1%. The temperature and composition dependences of the mutual diffusion coefficient have been found to be linear, and the entire body of experimental data is represented by a simple correlating equation within its estimated uncertainty.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00502347
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  • 7
    Electronic Resource
    Electronic Resource
    Identification of bacterial leaf streak of cereals by their phenotypic characteristics and host range in Iran (1995)
    Springer
    European journal of plant pathology 101 (1995), S. 225-229 
    Details
    ISSN: 1573-8469
    Keywords: Xanthomonas campestris pv.hordei ; pv.cerealis ; wheat ; barley
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Forty-four bacterial isolates were obtained from infected wheat, barley and various grasses from different regions of Iran. All isolates were bacteriologically similar toXanthomonas campestris and some of their physiological and biochemical features can be useful for a primary differentiation between them. Depending on their pathogenicity, the isolates were split into two groups; the wheat group isolated from wheat, barley and grasses could infect artificially wheat, barley, rye,Agropyron elongatum, Bromus inermis, andLolium multiflorum but not oat, whereas the barley group obtained from cultivated or wild barley was pathogenic to barley only. From their bacteriological characteristics and host range, the barley and the wheat group isolated were identified asX. campestris pvs.hordei andcerealis, respectively.Aegilops sp.,Sclerochloa dura, andHeteranthelium sp. were, for the first time, shown to be hosts ofX. c. pv.cerealis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01874778
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