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  • 1
    Digitale Medien
    Digitale Medien
    Host Density as a Factor in Plant Disease Ecology (1982)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 20 (1982), S. 143-166 
    Details
    ISSN: 0066-4286
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.py.20.090182.001043
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  • 2
    Digitale Medien
    Digitale Medien
    Further studies on a native Australian eucalypt forest invaded by exotic pines (1983)
    Springer
    Oecologia 59 (1983), S. 239-245 
    Details
    ISSN: 1432-1939
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Pinus radiata is spreading from plantations into some types of native eucalypt forest. A broad transect through one heavily invaded site was mapped in 1974 and re-examined after intervals of time. In 1977 the adjacent pine plantation was clear-felled for commercial purposes. By 1981 it was clear that the pines that had already invaded the eucalypt forest were contributing their own progeny to the mixed stand. However, the rate of recruitment is slow due to high seedling mortality. Comparative measurements have shown that during the period 1974–1981 the growth rate of pines established among the eucalypts was approximately ten times greater than that of the native trees.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00378843
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  • 3
    Digitale Medien
    Digitale Medien
    Isozyme analysis indicates that a virulent cereal rust pathogen is a somatic hybrid (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 565-566 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Isolates of rye stem rust, wheat stem rust and their putative hybrids were collected in the same geographical region on Secale cereale, Triticum aestivum and A. scabrum (a mutual host for all three types) respectively. Putative hybrids were identified by their virulence characteristics on selected ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/293565a0
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  • 4
    Digitale Medien
    Digitale Medien
    The effect of disease induced by Albugo candida (white rust) and Peronospora parasitica (downy mildew) on the survival and reproduction of Capsella burna-pastoris (shepherd's purse) (1984)
    Springer
    Oecologia 64 (1984), S. 314-318 
    Details
    ISSN: 1432-1939
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Disese induced by Albugo candida or Peronospora parasitica was found to have significant effects on the survival and reproductive output of affected individuals of Capsella bursa-pastoris. The time of infection by either pathogen was of considerable importance in determining the ultimate effect of disease. Systemic (primary) infection of seedling plants led to a high degree of mortality (88%) prior to reproductive maturity, however, localized or systemic secondary infection did not affect survival. Fruit production of surviving infected plants was negatively correlated with disease severity.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00379127
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  • 5
    Digitale Medien
    Digitale Medien
    Competition in mixtures of susceptible and resistant genotypes of Chondrilla juncea differentially infected with rust (1984)
    Springer
    Oecologia 64 (1984), S. 199-203 
    Details
    ISSN: 1432-1939
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Plants of two genotypes of Chondrilla juncea (skeleton weed), one susceptible to and the other resistant to one isolate of the rust Puccinia chondrillina, were grown as pure and mixed populations both in the presence and absence of rust. Weights of individual plants were obtained at two harvests, one when the plants were rosettes and the other when flowering had begun. Distributions of plant weights of each genotype became progressively more positively skewed with time, with rust infection of plants of the susceptible genotype and with increasing competition between plants of both genotypes. The results show that genetic differences may be an important factor in determining which individuals become dominant or are suppressed in competing mixtures, and that differential disease pressure may alter dominance of individuals in plant populations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00376871
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  • 6
    Digitale Medien
    Digitale Medien
    A set of differential Glycine hosts for the identification of races of Phakopsora pachyrhizi Syd. (1984)
    Springer
    Euphytica 33 (1984), S. 891-896 
    Details
    ISSN: 1573-5060
    Schlagwort(e): Glycine max ; soybean ; Glycine canescens ; Glycine clandestina ; Glycine tabacina ; Glycine tomentella ; Phakopsora pachyrhizi ; Soybean leaf rust ; disease resistance ; races ; differential set ; host-pathogen interactions
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Variation in the responses of a wide range of accessions of four native Australian species of Glycine (viz. G. canescens, G. clandestina, G. tabacina and G. tomentella) to infection by eight Australian isolates of Phakopsora pachyrhizi was analyzed. Differences in the infection type responses of the various wild Glycine species were sufficient to recognize six different virulence combinations amongst the eight pathogen isolates. A set of differential hosts useful in the identification of different races of the pathogen is presented to facilitate further examination of the virulence structure of the pathogen population.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00021917
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