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  • Nitrogen fixation  (22)
  • Wheat  (17)
  • Springer  (39)
  • Periodicals Archive Online (PAO)
  • 2010-2014
  • 1980-1984  (39)
Collection
Keywords
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  • Springer  (39)
  • Periodicals Archive Online (PAO)
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Year
  • 11
    Electronic Resource
    Electronic Resource
    The Tom Thumb dwarfing gene Rht3 in wheat (1983)
    Springer
    Theoretical and applied genetics 66 (1983), S. 249-256 
    Details
    ISSN: 1432-2242
    Keywords: Wheat ; Dwarfism ; Yield ; Quality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The effects of the ‘Tom Thumb’ Rht3 dwarfing gene in wheat on plant height, yield components and grain quality in field trials of random inbred lines from two ‘Minister Dwarf’ (Rht3) x rht3 crosses are described. Limited genetic increases in Rht3 plant height, up to 70 cm, were achieved by incorporating genes from the extremely tall variety ‘April Bearded’. Amongst lines from the higher yielding cross, the dwarfing gene did not reduce grain yield but was associated with an increase in grain number of over 25%. Although Rht3 reduced grain protein content by up to 0.8%, breadmaking quality, as measured by SDS sedimentation values and baking tests, was not affected. A controlled environment experiment with near-isogenic Rht3 and rht3 lines indicated that reduced grain size in the dwarfs is a competitive response to the increase in fertility rather than a primary effect of the dwarfing gene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00251155
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  • 12
    Electronic Resource
    Electronic Resource
    The genetic control of grain esterases in hexaploid wheat (1984)
    Springer
    Theoretical and applied genetics 68 (1984), S. 219-226 
    Details
    ISSN: 1432-2242
    Keywords: Hexaploid genotypes ; Allelic variation ; Esterase ; Isozymes ; Isoelectric focusing ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Analysis of grain esterase isozymes in Chinese Spring aneuploid genotypes by IEF confirmed that genes on the long arms of chromosomes 3A, 3B and 3D (Est-5) control the production of 19 isozymes. Allelic variants have been found for the isozyme pattern controlled by each chromosome. Segregational data involving null alleles and complex phenotypic differences indicate that the wheat grain esterases are encoded by three compound and probably homoeoallelic loci, each capable of producing at least six different isozymes. In a sample of 138 hexaploid genotypes, seven alleles were distinguished.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00266893
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  • 13
    Electronic Resource
    Electronic Resource
    Genetic studies of the crossability of hexaploid wheat with rye and Hordeum bulbosum (1983)
    Springer
    Theoretical and applied genetics 64 (1983), S. 303-307 
    Details
    ISSN: 1432-2242
    Keywords: Crossability ; Wheat ; Rye ; Hordeum bulbosum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Crosses of wheat (Triticum aestivum L.) Group 5 chromosome substitution lines from three different cultivar backgrounds indicate that there may be multiple alleles for reduced crossability with rye (Secale cereale L.) and H. bulbosum on both 5A and 5B chromosomes. No reduction in seed set was observed from any of the 5D substitution lines. It was found that the Kr1 locus on chromosome 5B had a more pronounced affect on both rye and H. bulbosum crossability than the Kr2 locus on chromosome 5A and that the effects of both loci were cumulative. The Kr alleles affected both rye and H. bulbosum crossability in a linear, or additive, fashion. The Kr 2 allele was shown to have little effect on H. bulbosum crossability compared to a significant effect on rye crossability. Tests with tetrasomic and nulli-tetrasomic lines of ‘Chinese Spring’ indicated that the kr allele is ‘null’ or inactive in promoting crossability while the Kr allele is active in reducing crossability to both rye and H. bulbosum. Thus, extra doses of the kr allele do not increase rye or H. bulbosum crossability in the presence of the corresponding Kr allele.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00274168
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  • 14
    Electronic Resource
    Electronic Resource
    Genetic control of α-Amylase production in wheat (1983)
    Springer
    Theoretical and applied genetics 64 (1983), S. 309-316 
    Details
    ISSN: 1432-2242
    Keywords: Wheat ; α-Amylase ; Isozymes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary An analysis of the α-amylase isozymes in GA-treated endosperm of wheat nullisomic-tetrasomics shows that there is more variation at the α-Amy-1 and α-Amy-2 homoeoallelic loci than was previously thought. Among the 16 isozymes produced by genes on the group 7 chromosomes, most could be definitely established as products of a single homoeoallele. Inter-varietal allelic differences would be expected at such loci and clear variation was found in isozymes produced by chromosomes 6B and 7B. The latter allele, α-Amy-B2b carried by the variety ‘Hope’, was used to locate the enzyme structural gene within chromosome 7B relative to the centromere and five other gene markers. The nature of the α-Amy-B2b phenotype and the rare non-parental isozyme patterns found among the recombinant lines indicates that the locus is large and compound, probably involving some degree of intra-locus gene duplication.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00274170
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  • 15
    Electronic Resource
    Electronic Resource
    Monosomic analysis of genes for resistance against stem rust races in bread wheat (1981)
    Springer
    Theoretical and applied genetics 59 (1981), S. 313-316 
    Details
    ISSN: 1432-2242
    Keywords: Triticum aestivum ; Wheat ; Puccinia graminis ; Stem rust resistance ; Monosomic analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Using monosomic analysis genes governing resistance in one wheat variety, ‘E5883’, against stem rust races 15C and 122, were located on specific chromosomes. Against race 15C, a major dominant gene, Sr6, was located on chromosome 2D of ‘E5883’ with minor modifiers found on chromosomes 4A and 6D. Against race 122, the presence of a recessive hemizygous ineffective gene, Sr8, was identified, located on chromosome 6A of variety ‘E5883’.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00264984
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  • 16
    Electronic Resource
    Electronic Resource
    Preferential C-banding of wheat or rye chromosomes (1982)
    Springer
    Theoretical and applied genetics 63 (1982), S. 227-233 
    Details
    ISSN: 1432-2242
    Keywords: C-banding ; Wheat ; Rye ; Triticale
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Using different stains, wheat chromosomes could be distinguished from rye chromosomes by preferential staining. C-bands of rye chromosomes were preferentially stained with Giemsa while those of wheat chromosomes were preferentially stained with either Leishman or Wright stain. Preferential staining aids the identification of wheat and rye chromosomes and chromosome segments and in particular the recognition of wheat/rye chromosome substitutions and translocations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00304000
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  • 17
    Electronic Resource
    Electronic Resource
    The Tom Thumb dwarfing gene, Rht3 in wheat, I. Reduced pre-harvest damage to breadmaking quality (1982)
    Springer
    Theoretical and applied genetics 62 (1982), S. 121-126 
    Details
    ISSN: 1432-2242
    Keywords: Wheat ; Quality ; Dwarfism ; Gibberellin ; α-amylase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The effects of the Tom Thumb dwarfing gene, Rht3, on the quality and quantity of grain α-amylase produced during germination and by induction with exogenous gibberellic acid are described. In a season conducive to high sprouting damage the gene reduced α-amylase levels in the field by 77%. Selection among random Rht3 genotypes showed that other genetic factors can be combined with the dwarfing gene to further increase sprouting damage resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00293343
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  • 18
    Electronic Resource
    Electronic Resource
    Purification of lumicolchicine for use in studies of plant development (1980)
    Springer
    Protoplasma 103 (1980), S. 105-114 
    Details
    ISSN: 1615-6102
    Keywords: Colchicine ; Lumicolchicine ; Microtubules ; Mitosis ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Lumicolchicine was purified by preparative thin-layer chromatography. Tests for purity were ultraviolet absorption spectrophotometry, analytical thin-layer chromatography, and a bioassay using wheat roots. Wheat roots treated for 3 days with 10−3 M lumicolchicine showed no c-mitosis, but had reduced growth compared with controls.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01276669
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  • 19
    Electronic Resource
    Electronic Resource
    The relative efficiency of nitrogen fixation in pea root nodules (1983)
    Springer
    Plant and soil 75 (1983), S. 131-138 
    Details
    ISSN: 1573-5036
    Keywords: Hydrogen inhibition ; Nitrogen fixation ; Peas ; Relative efficiency ; Rhizobium leguminosarum ; Root nodules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Experiments were performed to investigate the causes of low relative efficiency, RE, in legume root nodules. Nitrogen fixing activity and RE varied with time of incubation of nodules and with different temperatures and oxygen concentrations. The effects of nitrogen concentration and carbon dioxide concentration were also examined. In each case the RE was inversely related to nitrogen fixing activity; measured by acetylene reduction. Increasing the nitrogen concentration had no effect on either nitrogen fixing activity or RE. Experiments with isolated bacteroids gave higher RE values than the whole nodules from which they were isolated. All the results were consistent with hydrogen inhibition of nitrogenase within the nodule being the cause of low RE.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02178620
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  • 20
    Electronic Resource
    Electronic Resource
    Morphology, physiology and infectivity of twoFrankia isolates An 1 and An 2 from root nodules ofAlnus nitida (1984)
    Springer
    Plant and soil 78 (1984), S. 45-59 
    Details
    ISSN: 1573-5036
    Keywords: Actinorhizae ; Alnus nitrida ; Frankia ; Host-specificity ; Nitrogen fixation ; Root nodules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Two different strains, An 1 and An 2, were obtained from root nodules ofAlnus nitida Endl., collected from one locality in the area of its natural habitat near Bahrin, District Swat, Pakistan. The light and electron microscopy of the isolates revealed the occurrence of septate and branched hyphae bearing sporangia and vesicles. The strains differed in their growth requirements, nitrogen-fixing ability and production of extracellular pigments, thus indicating the existence of more than oneFrankia strain in the same locality. In the absence of combined nitrogen in the medium strain An 1 formed vesicles and fixed N2 (up to 200 nmol C2H4. mg protein−1.h−1), while strain An 2 under the experimental conditions formed only few vesicles and fixed N2 at a very low rate (ca 10 nmol C2H4. mg protein−1 .h−1). The nitrogenase activity of strain An 1 was strongly affected by the O2 concentration.Frankia An 1 and An 2 were infective and effective onA. nitida andA. glutinosa but not onDatisca cannabina andElaeagnus umbellata. Both An 1 and An 2 strains were more infective and effective onA. glutinosa thanFrankia strains AvcIl and CpI1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02277839
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