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  • 1
    Electronic Resource
    Electronic Resource
    Coevolution of the Rust Fungi on Gramineae and Liliaceae and their Hosts (1979)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 17 (1979), S. 367-403 
    Details
    ISSN: 0066-4286
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.py.17.090179.002055
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Genotypic Composition and Mildew Resistance in a Natural Population of Wild Barley, Hordeum spontaneum (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 99 (1987), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Two sets of accessions were sampled, tram a natural population of Hordeum spontaneum at Shelomi, Israel, viz.: 100 ears along a transect at intervals of 1—1.5 m and 10 ring clusters of 10 ears each, circling each 10th plant of the transect. Single ear progenies were tested for banding patterns of 5 allozyme loci; in addition, hordein sanding; and field reaction against powdery mildew has been determined. 56 allozyme genotypes and 13 hordein patterns were determined. Most of the progenies showed susceptible to moderately susceptible infection types and high frequencies of low infection grade (slow mildewing). For all characters spatial grouping was found in plants derived from neighbouring transect parents. This was even more pronounced in the ring clusters. Reactions to mildew infection appeared to be closely correlated with hordein banding. In addition, accessions showing hypersensitive reactions carried excessive frequencies of a certain allele of the Est-1 locus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1987.tb01160.x
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  • 3
    Electronic Resource
    Electronic Resource
    Transfer of stem rust seedling resistance from wild diploid einkorn to tetraploid durum wheat by means of a triploid hybrid bridge (1971)
    Springer
    Euphytica 20 (1971), S. 281-285 
    Details
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Transfer of stem rust resistance from diploid wild einkorn, Triticum boeoticum, to susceptible Mindum and Spelmar, varieties of cultivated T. durum, was achieved by means of a triploid hybrid bridge and subsequent backcrossing to the tetraploid parent. Seedlings of the second hybrid generation segregated for resistance to race 14 of Puccinia graminis f.sp. tritici which was used as test race in this investigation. The F3 and F4 progenies included segregants which displayed seedling resistance also to races 17, 19, 21, 40, 53, 194, 222, 315 and 322. Since these were the same races which proved avirulent to the T. boeoticum donor but virulent to the T. durum recipients, it was concluded that the full pattern of resistance determined in the wild diploid parent of this cross was transferred to the tetraploid durum-like hybrid derivatives.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00056088
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  • 4
    Electronic Resource
    Electronic Resource
    A new virulent strain of Puccinia hordei (1978)
    Springer
    Euphytica 27 (1978), S. 185-189 
    Details
    ISSN: 1573-5060
    Keywords: Puccinia hordei ; brown barley leaf rust ; Ornithogalum sp. ; alternate host ; Hordeum vulgare ; barley
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Four cultures of Puccinia hordei isolated from the alternate Ornithogalum hosts in Israel were virulent on seedlings of barley cultivars carrying resistance genes Pa, Pa2, Pa2 + Pa5, Pa2 + Pa6, Pa3, Pa4, and Pa7. Cultures with such a spectrum of virulence have never been reported. The cultures remained stable through 20 successive inoculation and isolation cycles. One of the cultures, T-40SS, retained its specific virulence after selfing on the alternate host. The evolution of virulent races of obligate parasites in the centers of origin of their hosts is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00039134
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Evaluation of germplasm response to septoria leaf blotch of wheat (1983)
    Springer
    Euphytica 32 (1983), S. 439-446 
    Details
    ISSN: 1573-5060
    Keywords: Triticum spp. ; wheat ; disease severity ; heading date ; plant height ; Septoria Progress Coefficient ; Septoria tritici
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The relationships between disease severity (percent pycnidia of Septoria tritici on the four uppermost leaves) and the vertical disease placement expressed as the ratio between disease height (cm)/plant height (cm), (referred to as SPC (Septoria Progress Coefficient)), and between maturity level (days to heading) and SPC, were evaluated for 9500 wheat and triticale accessions tested in field trials during 1977–1981. The relation between disease severity and SPC fitted a quadratic equation in which four distinct cutivar response classes were categorized: A) PCD (percent disease)≤15.0/SPC≤0.400 (highly resistant cultivars); B) PCD≤15.0/SPC (0.400–0.650) (moderately resistant); C) PCD (15.0–40.0)/SPC (0.400–0.700) (moderately susceptible); and D) PCD≥40.0/SPC〉0.700 (highly susceptible cultivars). It is suggested that cultivars assigned to classes B and C which exhibit low receptivity and moderate to high vertical pathogen placement differ in nature and type of protection from that expressed by the highly resistant cultivars in class A. Representative cultivars belonging to each of the classes are listed together with their agronomic characteristics (plant height and maturity level).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00021453
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