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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 160 (1989), S. 425-432 
    ISSN: 0006-291X
    Keywords: CAT; chloramphenicol acetyl transferase ; CI; cytoplasmic inclusion ; CP; coat protein ; HC; helper component ; NI"a; 52 kDa nuclear inclusion protein ; NI"b; 56 kDa nuclear inclusion protein ; TVMV; tobacco vein mottling virus ; nt; nucleotides
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 160 (1989), S. 425-432 
    ISSN: 0006-291X
    Keywords: CAT; chloramphenicol acetyl transferase ; CI; cytoplasmic inclusion ; CP; coat protein ; HC; helper component ; NI"a; 52 kDa nuclear inclusion protein ; NI"b; 56 kDa nuclear inclusion protein ; TVMV; tobacco vein mottling virus ; nt; nucleotides
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 118 (1999), S. 0 
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The 1AL.1RS wheat-rye chromosomal translocation originally found in ‘Amigo’ wheat possesses resistance genes for stem rust, powdery mildew and greenbug biotypes B and C, but also has a negative effect on wheat processing quality. Recently, a second 1AL.1RS translocation carrying Gb6, a gene conferring resistance to greenbug biotypes B, C, E, G and I, was identified in the wheat germplasm line ‘GRS1201′. Protein analytical methods, and the DNA polymerase chain reaction were used to identify markers capable of differentiating the 1RS chromosome arms derived from ‘Amigo’ and ‘GRS1201′. The secalin proteins encoded by genes on 1RS chromosome arms differed in ‘Amigo’ and ‘GRS1201′. A 70 kDa secalin was found in the ‘Amigo’1AL.1RS, but did not occur in the ‘GRS1201’1AL.1RS. Polymorphisms detected by PCR primers derived from a family of moderately repetitive rye DNA sequences also differentiated the two translocations. When ‘GRS1201’was mated with a non-1RS wheat, no recombinants between 1RS markers were observed. In crosses between 1RS and non-1RS parents, both DNA markers and secalins would be useful as selectable markers for 1RS-derived greenbug resistance. Recombination between 1RS markers did occur when 1RS from ‘Amigo’ and 1RS from ‘GRS1201’were combined, but in such intermatings, the molecular markers described herein could still be used to develop a population enriched in lines carrying Gb6. No differences in grain yield or grain and flour quality characteristics were observed when lines carrying 1RS from ‘Amigo’ were compared with lines with 1RS from ‘GRS1201′. Hence, differences in secalin composition did not result in differential quality effects. When compared with sister lines with 1AL.1AS derived from the wheat cultivar ‘Redland’, lines with ‘GRS1201’had equal grain yield, but produced flours with significantly shorter mix times, weaker doughs, and lower sodium dodecyl sulphate sedimentation volumes.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1435-0653
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Triticum aestivum L.) and rye (Secale cereale L.) have been associated with an increase in grain yield and a decrease in end-use quality in hard red winter wheat. Although demonstrated with a 1BL.1RS translocation, less information is available regarding the effect of 1AL.1RS translocations. The objective of this study was to determine the effect of 1AL.1RS translocation in hard red winter wheat on end-use quality traits and their stability across environments. From the heterogeneous 1AL.1RS wheat cultivar Nekota, 18 homogeneous 1A lines (non-1RS), 16 1AL.1RS lines, four composites (1A, 1AL.1RS, 1AL.1RS + 1A, and Nekota), and six cultivars were tested in eight Nebraska environments. The 1AL.1RS translocation increased flour protein content (5.5 mg g-1), but decreased flour yield (14.2 g kg-1), Mixograph mixing time (from 2.9-2.7 min), and Mixograph mixing tolerance rating (from 3.5-3.1). Despite higher flour protein content in 1AL.1RS lines, the 1AL.1RS translocation did not enhance other end-use quality traits. On the basis of linear regression, the 1A and 1AL.1RS lines had similar stability values for flour yield in all environments, while the 1AL.1RS lines had higher flour protein content in all environments. For Mixograph mixing time and mixing tolerance, the 1A lines were more responsive to the environment, while the 1AL.1RS lines had exceptional stability over all environments. The end-use quality of Nekota can be explained by a mixture of 1A lines with acceptable to good quality and 1AL.1RS lines with poor to acceptable quality.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1435-0653
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Secale cereale L.) chromosome one (1RS) has been associated with an increase in grain yield in hard red winter wheat (Triticum aestivum L.). This positive effect has been demonstrated when the 1RS arm is present in the 1BL.1RS translocation. However, little information is available regarding the 1AL.1RS translocation of yield and yield components and their stability across environments. Eighteen homogeneous 1A lines (non-1RS) and 16 1AL.1RS lines were randomly derived from the heterogeneous cultivar Nekota. These 34 line, four composites (1A, 1AL.1RS, 1AL.1RS = 1A, and Nekota), along with six check cultivars were grown in eight Nebraska environments. The 1AL.1RS translocation in the Nekota background increased kernel weight (3.3%) and grain volume weight (0.4%); had no effect of grain yield, kernels per spike, and anthesis date; and decreased plant height (1.2%) and number of spikes per square meter (2.9%). The 1A lines and 1AL.1RS lines were equally stable for grain yield, kernels per spike, spikes per square meter, and plant height. For kernel weight, the 1A lines were more responsive and tended to have heavier kernels under favorable environments, while the 1AL.1RS lines had heavier kernels under lower yielding environments. For grain volume weight, the 1A lines were more responsive than the 1AL.1RS lines, which had heavier grain volume weight under lower yielding environments. Hence, the 1AL.1RS translocation in Nekota was not beneficial for either agronomic performance or stability.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 90 (1995), S. 105-112 
    ISSN: 1432-2242
    Keywords: Wheat-rye translocations ; 1BL/1RS ; End-use quality ; Flour protein composition ; Size-exclusion high-performance liquids chromatography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Wheat (Triticum aestivum L.) breeders world-wide have used rye (Secale cereale L.) as a source of genes for agronomic improvement. The 1BL/1RS wheat-rye chromosomal translocation derived from the Russian cultivars ‘Kavkaz’ and ‘Aurora’ has been among the most common means of accessing useful rye genes. Unfortunately, deleterious wheat quality effects are often associated with the presence of 1RS. The identification of genetic backgrounds capable of alleviating the deleterious effects of 1RS is crucial for its continued exploitation. End-use quality parameters and flour protein composition, as measured by size-exclusion high-performance liquid chromatography (SE-HPLC) of 373 wheat lines, derived from seven 1BL/1RS breeding populations, were analyzed. In all populations, significant quality defects were detected in 1BL/1RS lines compared to non-1RS sister lines. The detrimental quality effects resulted from alteration of the ratio of flour protein composition, especially, decreased glutenin concentrations, and increased salt-water soluble protein concentrations. The end-use quality of 1BL/1RS lines, however, was highly dependent on genetic backgrounds. The potential exists for improvement in quality through crosses between 1RS lines with high glutenin, or low salt-water soluble protein concentrations, and non-1RS lines with strong dough properties.
    Type of Medium: Electronic Resource
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