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  • Artikel  (152)
  • Triticum aestivum  (152)
  • Springer  (152)
  • American Chemical Society (ACS)
  • 2020-2024
  • 1980-1984  (105)
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  • Artikel  (152)
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  • Springer  (152)
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  • 1
    Digitale Medien
    Digitale Medien
    Identification of wheat (Triticum aestivum L.) chromosomes with genes controlling the level of nitrate reductase, nitrite reductase, and acid proteinase using the Chinese Spring-Hope substitution lines (1976)
    Springer
    Biochemical genetics 14 (1976), S. 905-912 
    Details
    ISSN: 1573-4927
    Schlagwort(e): chromosome substitution ; nitrate reductase ; nitrite reductase ; acid proteinase ; Triticum aestivum
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract The levels of nitrate reductase, nitrite reductase, and acid proteinase were compared in the primary leaves of 8-day-old wheat seedlings of Chinese Spring, Hope, and the 21 disomic substitution lines of Hope in Chinese Spring. Two chromosomes, 7B and 7D, were considered to contain genes controlling the level of nitrate reductase. Substitution of Hope chromosome 7B caused a highly significant increase in the in vitro stability of nitrate reductase. Nitrite reductase appeared to be controlled by two major genes, located on chromosomes 4D and 7D, and two minor genes, located on chromosomes 3D and 5A. In the case of acid proteinase, substitution of chromosome 1D caused a significant reduction in enzyme activity.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00485123
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  • 2
    Digitale Medien
    Digitale Medien
    Nitrate reductase activity (in vivo and in vitro) of ditelosomic stocks of wheat (Triticum aestivum L.) (1981)
    Springer
    Biochemical genetics 19 (1981), S. 263-276 
    Details
    ISSN: 1573-4927
    Schlagwort(e): nitrate reductase ; Triticum aestivum ; ditelosomics
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract The nitrate reductase activities (NRA) of 31 ditelosomic stocks were compared with that of the control plant [Chinese Spring (CS) euploid], using in vivo and in vitro assay procedures that had been optimized with respect to the euploid. Fourteen stocks exhibited significant differences in in vivo NRA from that of the euploid; the effect of removal of a chromosome arm was always to increase NRA. Eight of these stocks showed similar effects in vitro, although in three, a casein-sensitive factor had to be eliminated before the difference was expressed. Homoeologous group effects were evident among ditelosomics of groups 2, 4, and 7, while for three chromosomes (2D, 7A, and 7B), removal of either arm resulted in a similar increase in NRA in vivo and probably in vitro.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00504273
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  • 3
    Digitale Medien
    Digitale Medien
    The response of anther culture to culture temperature in Triticum aestivum (1983)
    Springer
    Theoretical and applied genetics 66 (1983), S. 101-109 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Anther culture ; Culture temperature ; Induction frequency ; Pollen callus (plantlet) ; Triticum aestivum
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary The response of anther culture to culture temperature was studied in detail using many varieties, F1 hybrids and pollen-derived lines of wheat (Triticum aestivum) as materials. The suitable culture temperature for inducing pollen callus (or embryoids) in wheat anther culture ranged from 26 °C to 30 °C, varying with genotypes. But for the great majority of wheat genotypes the suitable culture temperatures lay between 28 °C and 30°C. The most significant genotypic variation in the response to culture temperature was observed in the comparison between the culture at 33 °C for eight days followed by culture at 25 °C (or 26 °C) and the continuous culture at 25 °C (or 26 °C). This genotypic variation in the response to culture temperature is a heritable character which may be controlled by multiple genes. The effect of culture at 30 °C for eight days followed by culture at 26 °C was similar to, or in some cases, better than that of continuous culture at 28 °C, and the effect of culture at 32 °C for eight days followed by culture at 28 °C was similar to that of continuous culture at 30 °C. In the range from 26 °C to 32 °C, the overwhelming majority of pollen calli emerged before the 40th day after anther inoculation, and the higher the culture temperature, the earlier and more concentrated the emerging period of the pollen callus. The pollen callus obtained at high temperatures above 28 °C should be transferred in time onto the regeneration medium at 25°–27°C to induce shoots.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00265182
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  • 4
    Digitale Medien
    Digitale Medien
    The chromosomal location of malate dehydrogenase isozymes in hexaploid wheat (Triticum aestivum L.) (1983)
    Springer
    Theoretical and applied genetics 64 (1983), S. 255-258 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Triticum aestivum ; Wheat ; Malate dehydrogenase ; Chromosomal location
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary The malate dehydrogenase (E.C. no 1.1.1. 37) of Triticum aestivum L. cv. Chinese Spring, shows two activity zones. The results obtained support the hypothesis that the malate dehydrogenase isozymes of zone II are dimers composed of the six possible combinations of subunits coded by triplicate genes located in the long arms of chromosomes of the homoeologous group 1.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00303774
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  • 5
    Digitale Medien
    Digitale Medien
    Study on nuclear and cytoplasmic genome expression in wheat by two-dimensional gel electrophoresis (1984)
    Springer
    Theoretical and applied genetics 68 (1984), S. 335-345 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Triticum aestivum ; 2D electrophoresis ; Developmental genetics ; Cytoplasmic inheritance ; Genetic regulation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Two-dimensional gel electrophoresis of denaturated proteins were performed at five developmental stages or organs (hereafter referred to as stage-organs) on two wheat lines with four different cytoplasms. Five hundred and fifty to 712 reproducible spots were scored depending on the stage-organ. Each stage-organ is unambiguously characterized and several types of control of protein quantity are recorded. Post-translational modifications are hypothetized and may sometimes be stagespecific. Two cytoplasmic patterns are found: one for the euplasmic lines with Triticum aestivum cytoplasm and one for the alloplasmic lines with Aegilops juvenalis, Ae. ventricosa and Ae. kotschyi cytoplasms. Cytoplasmic variation is observed for 28 spots showing position difference, all of which are probably products of the LS gene, and for four spots showing differences for regulation of protein quantity. Nuclear variation between ‘Chinese Spring’ and ‘Selkirk’ is found for 20 allelic differences and for 20 regulatory systems, the latter number being probably underestimated.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00267887
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  • 6
    Digitale Medien
    Digitale Medien
    Glutamate oxaloacetate transaminase isozymes of the Triticinae: dissociation and recombination of subunits (1977)
    Springer
    Theoretical and applied genetics 50 (1977), S. 47-51 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Glutamate Oxaloacetate Transaminase ; Isozymes ; Triticum aestivum ; Subunits
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary A simple procedure has been developed for the dissociation of active molecules of glutamate oxaloacetate transaminase (GOT: E.C. 2.6.1.1) into protomers and for the reassociation of the subunits into active enzymes. Results of experiments in which the protomers of genetically controlled electrophoretic variants of GOT of Triticum aestivum and of several related species were dissociated and recombined in crude tissue extracts and in partially purified preparations support the hypothesis that the enzyme exists functionally as a dimer in the Triticinae.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00273797
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  • 7
    Digitale Medien
    Digitale Medien
    Protein accumulation, RNA and soluble amino nitrogen content in developing endosperm of two varieties of Triticum aestivum with high and low protein seed (1977)
    Springer
    Theoretical and applied genetics 50 (1977), S. 73-77 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Triticum aestivum ; Wheat ; Endosperm ; Protein Synthesis ; RNA Level ; Amino Acid Translocation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary The kinetics of protein accumulation, the variation in RNA, the soluble amino nitrogen content of developing endosperm of two varieties of Triticum aestivum, with high and low protein content in the mature seed, suggest a possible relation between maintenance of the RNA content and the ability to synthesize protein. A sudden halt in protein accumulation is observed as the RNA starts to decrease. The hypothesis is also advanced that maintenance of the RNA content might, in turn, be dependent on the presence, in the endosperm of developing wheat seed, of a certain level of soluble amino nitrogen which could then play the role of limiting factor for protein synthesis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00277249
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  • 8
    Digitale Medien
    Digitale Medien
    New hybrids between Agropyron and wheat (1983)
    Springer
    Theoretical and applied genetics 66 (1983), S. 111-121 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Triticum aestivum ; Agropyron ; Intergeneric hybrids ; Embryo culture ; Chromosome pairing
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Intergeneric hybrids of Triticum aestivum (2n=42,AABBDD) with Agropyron ciliare (2n= 28,SSYY), A. trachycaulum (2n=28,SSHH), A. yezoense (2n=28,SSYY) and A. scirpeum (2n=28) are reported for the first time. F1 hybrids of T. aestivum were also produced with A. intermedium (2n=42,E1E1E2E2Z1Z1) and A. junceum (2n=14,JuJu). All wheat-Agropyron hybrids were obtained by embryo rescue technique. Cultivars and reciprocal crosses differed for seed set, seed development and F1 plant production. The F1 hybrids were sterile. Attempts to obtain amphiploids were unsuccessful. However, backcross derivatives were obtained with wheat as the recurrent parent. The level of chromosome pairing in A. trachycaulum x wheat, A. yezoense x wheat and wheat x A. junceum hybrids provided no evidence of homologous or homoeologous pairing. Mean pairing frequencies in A. ciliare x wheat, wheat x A. scirpeum and wheat x A. intermedium hybrids indicated homoeologous or autosyndetic pairing. Ph gene was more effective in regulating homoeologous pairing in A. yezoense x wheat hybrids than in A. ciliare x wheat hybrid. Chromosome pairing data of BC1 derivatives indicated that either some of the wheat chromosomes were eliminated or Agropyron chromosomes caused reduced pairing of wheat homologues.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00265184
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  • 9
    Digitale Medien
    Digitale Medien
    Blocks of gliadin components in winter wheat detected by one-dimensional polyacrylamide gel electrophoresis (1984)
    Springer
    Theoretical and applied genetics 67 (1984), S. 559-568 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Triticum aestivum ; Gliadins ; Electrophoresis ; Hybridological analysis ; Genetic nomenclature
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Inheritance of gliadin components in winter wheat has been studied by one-dimensional polyacrylamide gel electrophoresis. Single F2 grains from 36 intervarietal hybrid combinations have been analysed. The genetic analysis has revealed blocks, including 1–6 gliadin components, which are inherited as individual mendelian traits. About 80 variants of blocks have been detected. On the basis of the allelism test they are grouped into 6 series in accordance with the number of known gliadin-coding loci located on chromosomes of the homoeologous groups 1 and 6. Each series includes 8–18 blocks controlled by different alleles of one gliadin-coding locus. Blocks of components have been confirmed to be inherited codominantly in accordance to the gene dose in the triploid endosperm. The highest similarity between members of one series is observed in groups of blocks controlled by chromosomes ID and 6D. On the contrary, many blocks controlled by chromosomes 1A and 1B have no bands in common. The presented catalogue of blocks of components may be used to make up gliadin genetic formulae and to compare electrophoregrams obtained by different authors. Blocks of gliadin components are suitable genetic markers for use in revealing and studying heterogeneity of wheat varieties, in tracing their origin, in identifying recombinations, translocations and substitutions of the genetic material and in solving many other problems of the origin, evolution and selection of hexaploid wheat.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00264904
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  • 10
    Digitale Medien
    Digitale Medien
    Analysis of nucleolar activity in Agropyron elongatum, its amphiploid with Triticum aestivum and the chromosome addition lines (1984)
    Springer
    Theoretical and applied genetics 68 (1984), S. 75-80 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Amphiplasty ; Ag-NOR ; Addition lines ; Nucleolar organizer ; Agropyron elongatum ; Triticum aestivum
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary The nucleolar organizer activity of the Agropyron elongatum, its amphiploid with hexaploid wheat (Triticum aestivum) and the chromosome addition lines is analyzed by the silver-staining procedure. Four Ag-NORs are observed in A. elongatum corresponding to the chromosomes 6E and 7E. In the amphiploid T. aestivum — A. elongatum, eight Ag-NORs are observed which corresponds the wheat chromosomes 1B and 6B and to the elongatum chromosomes 6E and 7E. Thus, there is codominance in the nucleolar organizer activity of the chromosomes of the two species. However, a partial amphiplasty is detected since less than 8 Ag-NORs (7 up to 4) are observed in some metaphase cells; the chromosomes 6E and 7E are occasionally suppressed by wheat chromosomes. This conclusion is confirmed by the behaviour of the addition lines since only in those corresponding to the chromosomes 6E and 7E are the elongatum chromosomes nucleolar active although occasionally they can be suppressed by wheat chromosomes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00252316
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