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  • 1
    Electronic Resource
    Electronic Resource
    Negative ion mass spectrometry. New analytical method for detection of trinitrotoluene (1972)
    s.l. : American Chemical Society
    Analytical chemistry 44 (1972), S. 2235-2237 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60321a017
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  • 2
    Electronic Resource
    Electronic Resource
    Periodisch auftretende Querstrukturen in Nervenfasern des Bulbus olfactorius der ElritzePhoxinus laevis (1970)
    Springer
    Cellular and molecular life sciences 26 (1970), S. 1349-1350 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Nerve fibers in the olfactory bulb of the minnow with a mean diameter of 1.5 μm contain transversally arranged membranous septa with a periodicity of approximately 1 μm. These profiles are fenestrated by pores, each of them being occupied by a neurotubulus. The septa are connected by longitudinally arranged membranous tubuli.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02113024
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  • 3
    Electronic Resource
    Electronic Resource
    Peculiarities of innervation in chromatophore muscle cells ofLoligo vulgaris (1973)
    Springer
    Marine biology 19 (1973), S. 224-226 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The contractile cortex in muscle cells of the large brown chromatophore organs inLoligo vulgaris features a small open slit in its proximal portion. The slit accommodates a nerve fiber, penetrating into the central core of the muscle cell. The functional properties of the fiber, in relation to the contraction of the muscle cell, are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02097142
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  • 4
    Electronic Resource
    Electronic Resource
    Computer simulation of disordering and amorphization by Si and Au recoils in 3C–SiC (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 4275-4281 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Molecular dynamics has been employed to study the disordering and amorphization processes in SiC irradiated with Si and Au ions. The large disordered domains, consisting of interstitials and antisite defects, are created in the cascades produced by Au primary knock-on atoms (PKAs); whereas Si PKAs generate only small interstitial clusters, with most defects being single interstitials and vacancies distributed over a large region. No evidence of amorphization is found at the end of the cascades created by Si recoils. However, the structure analysis indicates that the large disordered domains generated by Au recoils can be defined as an amorphous cluster lacking long-range order. The driving force for amorphization in this material is due to the local accumulation of Frenkel pairs and antisite defects. These results are in good agreement with experimental evidence, i.e., the observed higher disordering rate and the residual disorder after annealing for irradiation with Au2+ are associated with a higher probability for the in-cascade amorphization or formation of a large disordered cluster. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1355717
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  • 5
    Electronic Resource
    Electronic Resource
    Susceptibility to sharka (Plum pox virus) in Prunus mandshurica×P. armeniaca seedlings (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 122 (2003), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Prunus mandshurica [(Maxim.) Koehne] from Central Asia is a species related to apricot and grown in China and Mongolia. This species has been used in apricot breeding as a source of frost resistance. In addition, P. mandshurica has been suggested as the possible origin of some North American apricot cultivars resistant to sharka (Plum pox virus, PPV). The aim of this work was to transmit the resistance to PPV from P. mandshurica to the Spanish apricot cultivar ‘Currot’ by traditional crossing. The resistance to a Dideron PPV isolate of the descendants of P. mandshuricaבCurrot’ and their progenitors was evaluated under controlled conditions in a greenhouse. The results showed the susceptibility of both, the progenitors and the offspring to PPV, as being much higher than in other apricot seedlings. The results showed that the P. mandshurica accession studied is not a good progenitor in breeding apricot for PPV resistance, but just the opposite. The possible role of P. mandshurica as a source of resistance in apricot resistant cultivars is questioned.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2003.00902.x
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  • 6
    Electronic Resource
    Electronic Resource
    Genetic gains for yield after two back-crosses of the interspecific hybrid Libusta (Coffea canephora P. × C. liberica Bull. Ex Hiern) to C. canephora P. (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 122 (2003), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The Libusta (Coffea canephora P. × C. liberica B.) programme initiated in the seventies in Côte d'Ivoire aims at improving the quality of coffee grown in low altitudes, with a yield comparable to current commercial C. canephora clones. The second generation of back-crosses to the C. canephora (CAN) parent, BC2, are now likely to be commercially exploited as far as yield is concerned. The best BC2 progeny yielded 1386 kg of green coffee/ha/y, averaged over five harvest years. On average, the genetic gain for yield from BC1 to BC2 reached 22%. In a factorial mating design, no interaction was observed between BC1 and CAN parents, while both main effects were highly significant. This explained that observed genetic gains and further genetic gains may be achieved with appropriate strategies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2003.00839.x
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  • 7
    Electronic Resource
    Electronic Resource
    Inheritance of green peach aphid resistance in the peach cultivar ‘Rubira’ (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 121 (2002), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The green peach aphid (GPA) is a serious pest of peach tree in many areas of the world. To date, only one GPA resistance gene has been assigned in peach. This study was initiated to determine the inheritance of GPA resistance in the red leaf peach rootstock cultivar ‘Rubira’. Crosses were made between ‘Rubira’ and the susceptible green leaf peach rootstock cultivar ‘Pamirskij 5′. Genetic analysis was performed on the parents, F1 and F2 progenies. Analyses of segregation patterns of plants in F1 (1:0) and F2 (3:1) indicated single dominant gene control of GPA resistance in ‘Rubira’. Reddish spots, probably due to aphid feeding punctures, are associated with, but not themselves responsible for, the GPA resistance in ‘Rubira’. No relationship was found between GPA resistance and the red leaf character of ‘Rubira’.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2002.734333.x
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  • 8
    Electronic Resource
    Electronic Resource
    New sources of resistance for stripe rust in barley (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 119 (2000), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Eight spring barley accessions from the gene bank in Gatersleben, Germany, and 10 cultivars were tested for stripe rust resistance. Tests were performed at the seedling stage in the growth chamber and as adult plants in the field. All accessions and six cultivars were scored as resistant against race 24 under all test conditions, with very few plants as exceptions, while the susceptible control cultivars ‘Karat’ and ‘Certina’, and four other cultivars were attacked in all cases. Differences between accessions and between cultivars were detected after infection with isolates from ‘Trumpf’ and ‘Bigo’ (seedling tests only). Infection structures within seedling leaves without pustules and for the first time within leaves of adult plants from the field were analysed by fluorescence microscopy. With this method additional genetic Differences in the resistance reaction could be detected which could not to be seen in the resistance test. Crosses between the accessions and the susceptible cultivar ‘Karat’ led to segregating F2 progenies. The percentage of resistant plants varied between the accessions. This also indicates a different genetic basis of resistance in the accessions. The infection structures observed by fluorescence microscopy stopped earlier in leaves of the two accessions HOR 8979 and HOR 8991 than in leaves of other accessions in all the tests. These accessions were the only ones with more than 50% resistant plants in all F2 tests. In general, the accessions from the gene bank can be used as new resistance sources against stripe rust.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.2000.tb01676.x
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  • 9
    Electronic Resource
    Electronic Resource
    Marker analysis for quantitative traits in sugar beet (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 119 (2000), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Many economically important traits are inherited quantitatively and are analysed by breeders in replicated field trials. If dense maps are available, chromosomal regions containing quantitative trait loci (QTL) can be identified and this opens up the possibility of preselecting for quantitative traits in the laboratory. In this study, QTL analysis for yield and yield components in sugar beet is used in two different populations tested in several environments in both populations, QTL were detected for all traits investigated, and their predictive value in breeding schemes was analysed by correlating predicted with observed values. Tolerance to Rhizomania, caused by a gene on chromosome 3, was the main source of genotype-environment interaction in one population, allowing selection on a QTL basis within macro-environments with or without Rhizomania infestation, respectively. No clear results were found for the second population tested in environments with and with-out Cercospora infestation. Consequences for breeding strategies are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2000.00482.x
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  • 10
    Electronic Resource
    Electronic Resource
    Eyespot resistance in wheat ×Aegilops kotschyi backcross lines (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 121 (2002), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In wheat, eyespot caused by PseudoCercosporella herpotrichoides, is one of the main foot-rot diseases. Yield losses up to 40% occur in some years. Plant protection by fungicide application is possible, but a better way is through resistance breeding. Two resistance sources are currently used: Aegilops ventricosa and the old French variety ‘Cappelle Desprez’. A new source of resistance has been found in the accession AE120 of Ae. kotschyi from the Gatersleben gene bank with the genome constitution UUSvSv. This accession has been crossed and backcrossed twice to susceptible wheat varieties, and in each generation, plants with a relatively high level of resistance have been selected. From this material, lines have been developed and tested in F6 to F8. Finally, several lines could be classified as moderately resistant, such as the French variety ‘Cappelle Desprez’ after resistance determination during milk ripeness (DC75). No line reached the high resistance level achieved with Pch-1 from Ae. ventricosa. The yield of these lines under infection conditions was higher compared with ‘Cappelle Desprez’. The line 6018-96-3 showed a high yield of 64.3 dt/ha compared with 59.6 dt/ha, on the average, in combination with the best expression of eyespot resistance in the adult growth stage over 3 years.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2002.00669.x
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