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  • Articles  (25)
  • Wheat  (25)
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  • Articles  (25)
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  • Springer  (25)
  • American Geophysical Union
  • American Meteorological Society
  • American Physical Society (APS)
  • Cambridge University Press
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  • 2000-2004
  • 1980-1984  (25)
  • 1960-1964
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  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (13)
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  • 1
    Electronic Resource
    Electronic Resource
    Investigation of a preferentially transmitted Aegilops sharonensis chromosome in wheat (1982)
    Springer
    Theoretical and applied genetics 61 (1982), S. 27-33 
    Details
    ISSN: 1432-2242
    Keywords: Preferential transmission ; In situ hybridization ; C-banding ; Aegilops sharonensis ; Wheat ; Addition ; Substitution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary An attempt to produce a set of addition lines of Aegilops sharonensis to the wheat variety ‘Chinese Spring’ produced only one addition line. This was due to preferential transmission of one chromosome from Ae. sharonensis. This chromosome was studied in detail by established cytological methods of chromosome observation and by the newer techniques of C-banding and in situ hybridization of a cloned DNA sequence. The chromosome was found to be partially homologous to an Ae. sharonensis chromosome of similar behaviour in another wheat addition line. The incomplete homology of the two Ae. sharonensis chromosomes was due to the presence of a translocated segment of a wheat chromosome. — Substitution lines of the Ae. sharonensis chromosome for wheat homoeologous group 4 were produced and the Ae. sharonensis chromosome thereby designated 4 S l .
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00261506
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  • 2
    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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  • 3
    Electronic Resource
    Electronic Resource
    Two NAD-dependent alcohol dehydrogenases (E.C. 1.1.1.1) in callus cultures of wheat, rye and triticale (1982)
    Springer
    Theoretical and applied genetics 62 (1982), S. 45-48 
    Details
    ISSN: 1432-2242
    Keywords: Wheat ; Rye ; Triticale ; Callus cultures ; Alcohol dehydrogenase ; Isoenzymes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Two NAD-dependent alcohol dehydrogenases ADH-1 and ADH-2, under independent genetic control of genes designated as Adh-1 and Adh-2 located on chromosomes 4A, 4B and 4D, have been reported in aestivum wheat (Hart 1980). Only ADH-1 is expressed in developing seeds, dry seeds, pollen and germinating seedlings. ADH-2 can be induced in seedling roots or shoots under conditions of partial anaerobiosis or by certain chemicals. Expression of ADH-1 and ADH-2 isoenzymes was investigated in undifferentiated calli from aestivum and durum wheats, rye, triticale and also in in vitro regenerated roots and leaves from aestivum cultures. Wheat callus cultures originating from seed, mature and immature embryos, mesocotyl and root, as well as cultures grown on media containing different supplements did not show any variation in the overall expression of ADH-1 or ADH-2, although differences in the band intensities were observed. The callus isoenzyme pattern was similar to that observed in roots under anaerobic conditions. Both ADH-1 and ADH-2 were expressed in in vitro regenerated roots but were absent in regenerated leaves. Expression of ADH-1 and ADH-2 in wheat calli seems to be related to the type of differentiation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276281
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  • 4
    Electronic Resource
    Electronic Resource
    Predicting the frequencies of transgressive segregants for yield and yield components in wheat (1982)
    Springer
    Theoretical and applied genetics 62 (1982), S. 127-134 
    Details
    ISSN: 1432-2242
    Keywords: Wheat ; Genetical analysis ; Cross prediction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Genetical analysis of the F2 triple test cross design combined with conventional early generations was used to elucidate the genetical control of yield and yield components in two crosses of winter wheat. From estimates of the additive, {d}, and additive X additive, {i}, components of means, together with the additive genetical variance, D, predicted frequencies of recombinant inbred lines that would transgress the parental range were calculated for each cross. The accuracy of predictions was evaluated by comparing expected frequencies with observed numbers in populations of F6 lines previously developed by single seed descent. For both crosses and all characters where an adequate genetical model was found to explain the observed variation between the early generations, good agreement between predicted and observed frequencies of transgressive segregants was obtained. Furthermore, for characters exhibiting significant epistasis, allowance for additive X additive {i} epistasis in the prediction equations was sufficient to allow for skewness of the recombinant inbred population. These results demonstrate that cross performance in wheat can be predicted from genetical analysis of early generations, and the value of this approach in breeding new varieties is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00293344
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  • 5
    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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  • 6
    Electronic Resource
    Electronic Resource
    Genetic control of 6-phosphogluconate dehydrogenase (6-PGD) isozymes in cultivated wheat and rye (1982)
    Springer
    Theoretical and applied genetics 62 (1982), S. 317-320 
    Details
    ISSN: 1432-2242
    Keywords: Wheat ; Rye ; Phosphogluconate dehydrogenase ; Genetic control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The 6-phosphogluconate dehydrogenase (6-PGD) zymogram phenotypes of wheat, rye and their aneuploid derivatives were determined. Two genes involved in the production of 6-PGD isozymes were located on chromosome arms CRL (4 RL) and FRL (6 RL) of “Imperial” rye. On the basis of differential interactions between wheat and rye chromosomes, evidence was obtained that genes located on chromosomes 6 A, 6 BL and 7 BL control 6-PGD isozyme activities in ‘Chinese Spring’ wheat. The wheat and rye 6-PGD zymogram phenotypes were indicative of homoeologous relationships between rye chromosome 6 RL to wheat chromosomes of group 6, and rye chromosome 4 RL to wheat chromosomes of group 7.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00275094
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  • 7
    Electronic Resource
    Electronic Resource
    The purification and characterization of homologous high molecular weight storage proteins from grain of wheat, rye and barley (1982)
    Springer
    Theoretical and applied genetics 62 (1982), S. 329-336 
    Details
    ISSN: 1432-2242
    Keywords: HMW storage prolamins ; Wheat ; Rye ; Barley ; Characterization and purification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Homologous high molecular weight storage prolamins were purified from grain of wheat, rye and barley using combinations of gel filtration, ion-exchange chromatography and preparative isoelectric focusing. Sodium dodecylsulphate polyacrylamide gel electrophoresis showed that the components were single bands with apparent mol.wts. of above 100,000. Molecular weights determined by sedimentation equilibrium ultracentrifugation were considerably lower; 54,700, 67,600 and 69,600 for the components from barley, rye and wheat respectively. Amino acid analysis showed the presence of 13.6 to 16.5 mol% glycine, 29.6 to 34.0 mol% glutamate + glutamine, 11.4 to 13.7 mol% proline and a total of 4.0 to 5.7 mol% basic amino acids. Automated N-terminal amino acid sequencing of the component from wheat showed the presence of cysteine residues at positions 5 and 10, and this is discussed in relation to the possible role of these proteins in the visco-elastic gluten network.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00275097
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  • 8
    Electronic Resource
    Electronic Resource
    C-banded wheat chromosomes in wheat and triticale (1982)
    Springer
    Theoretical and applied genetics 63 (1982), S. 39-47 
    Details
    ISSN: 1432-2242
    Keywords: C-banding ; Wheat ; Triticale ; Heterochromatin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The C-banding patterns of wheat chromosomes in 7 hexaploid triticale and 7 wheat genotypes are described and compared. All 14 wheat chromosome pairs were individually identified in the triticales and a tetraploid wheat, and all the B and two A genome chromosome pairs in the hexaploid wheat genotypes. Little variation was found between genotypes in the distribution of C-bands but considerable variation was found in their size, total number and total length.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00303488
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  • 9
    Electronic Resource
    Electronic Resource
    Relationships of Agropyron intermedium chromosomes determined by chromosome pairing and alcohol dehydrogenase isozymes in common wheat background (1982)
    Springer
    Theoretical and applied genetics 63 (1982), S. 213-217 
    Details
    ISSN: 1432-2242
    Keywords: Wheat ; Agropyron ; Chromosome pairing ; Alcohol dehydrogenase isozymes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The relationships of Agropyron intermedium chromosomes in two wheat-Agropyron addition series were determined. Chromosome pairing behaviour revealed that the alien chromosome in lines TAF-2 and L7 of ‘Vilmorin’-A. intermedium set are homologous to the alien chromosomes in lines P and C of the ‘Caribo’-A. intermedium set respectively. Localization of alcohol dehydrogenase isozyme genes in ‘Vilmorin’-Agropyron addition line L4 and in ‘Caribo’-Agropyron line O indicated relationships with wheat chromosomes of homoeologous group 4.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00303996
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  • 10
    Electronic Resource
    Electronic Resource
    The wheat ribosomal DNA spacer region: Its structure and variation in populations and among species (1982)
    Springer
    Theoretical and applied genetics 63 (1982), S. 337-348 
    Details
    ISSN: 1432-2242
    Keywords: Wheat ; rDNA ; Sequence ; Populations ; Variation ; Spacer region ; Triticum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The wheat rDNA clone pTA250 was examined in detail to provide a restriction enzyme map and the nucleotide sequence of two of the eleven, 130 bp repeating units found within the spacer region. The 130 bp units showed some sequence heterogeneity. The sequence difference between the two 130 bp units analysed (130.6 and 130.8) was at 7 positions and could be detected as a 4 °C shift in Tm when heterologous and homologous hybrids were compared. This corresponded to a 1.2% change in nucleotide sequence per ΔTm of 1 °C. The sensitivity of the Tm analysis using cloned sequences facilitated the analysis of small sequence variations in the spacer region of different Triticum aestivum cultivars and natural populations of T. turgidum ssp. dicoccoides (referred to as T. dicoccoides). In addition spacer length variation was assayed by restriction enzyme digestion and hybridization with spacer sequence probes. Extensive polymorphism was observed for the spacer region in various cultivars of T. aestivum, although within each cultivar the rDNA clusters were homogeneous and could be assigned to particular chromosomes. Within natural populations of T. dicoccoides polymorphism was also observed but, once again, within any one individual the rDNA clusters appeared to be homogeneous. The polymorphism, at the sequence level (assayed by Tm analysis), was not so great as to prevent the use of spacer sequence variation as a probe for evolutionary relationships. The length variation as assayed by restriction enzyme digestion did not appear to be as useful in this regard, since its range of variation was extensive even within populations of a species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00303905
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