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Virulence of Erwinia amylovora and its influence on the determination of fire blight resistance of pear cultivars and seedlings


, : Virulence of Erwinia amylovora and its influence on the determination of fire blight resistance of pear cultivars and seedlings. Canadian Journal of Plant Pathology 3(4): 187-190

Nine strains of E. amylovora isolated from apple and pear trees growing in southern Ontario were injected into shoots of four cultivars. No distinct differences were noted in cultivar response other than those attributed to variation in virulence of the strains. Three strains representing the range of virulence were used to inoculate young trees of eight progenies derived from crosses of Bartlett (Williams' Bon Chretien) and Kieffer as females, with Old Home, HW601, Mac and Comice as males.

US$19.90

DOI: 10.1080/07060668109501345


Other references

Yasuda, Y.; Inoue, Y., 1981: Evidence for the presence of two kinetically distinct active forms of ribonuclease T2. The pH dependence of the steady-state kinetic parameter, kcat, for transphosphorylation of both a natural and a synthetic substrate. A kinetic study has been made of the RNase-T2-catalyzed transphosphorylation of two adenine nucleotides, adenylyl(3'-5')uridine and adenosine 3'-(1-naphthyl)phosphate. Rates were measured at pH values ranging from 2.6 to 8.2. The ob...

Williams, S.R.; Stuart, G.J., 2000: Backpropagation of physiological spike trains in neocortical pyramidal neurons: implications for temporal coding in dendrites. In vivo neocortical neurons fire apparently random trains of action potentials in response to sensory stimuli. Does this randomness represent a signal or noise around a mean firing rate? Here we use the timing of action potential trains recorded i...

Auguet M.; Guillon J.M.; Delaflotte S.; Hellegouarch A.; Baranes J.; Clostre F.; Braquet P., 1987: Dissociation of histamine 1 receptor inhibitors using cardiovascular models. Federation Proceedings 46(3): 962

Okuda, A.; Kubota, M.; Watanabe, K.; Sawada, M.; Koishi, S.; Kataoka, A.; Usami, I.; Lin, Y.W.; Furusho, K., 1997: Inhibition of superoxide production and chemotaxis by methotrexate in neutrophils primed by TNF-alpha or LPS. We have demonstrated recently that methotrexate (MTX) inhibits superoxide generation and chemotaxis induced by N-formylmethionyl-leucyl-phenylalanine (fMLP) in neutrophils primed by granulocyte colony-stimulating factor (G-CSF). To extend these ob...

Ishikawa, M.; Watanabe, K.; Kimura, K.; Kikuchi, J., 1984: Relation between daily habits and caries incidence in the dental health examination of 1 1/2-year-old infants. A comparison with a survey taken 7 years previously. Shoni Shikagaku Zasshi. Japanese Journal of Pedodontics 22(4): 846-853

Innes J.A., 1987: Community acquired pneumonia. British Medical Journal 295(6606): 1083-1084

Hagen, M.; Kraemer, M., 2010: Agricultural surroundings support flower-visitor networks in an Afrotropical rain forest. Local habitat structure and resource availability appear to be of great importance for the diversity, abundance, and community structure of bees. We examined the contribution of three different habitat types (farmland, forest edge, forest understo...

Sullivan N.; Tuck L.; Welty G.; Firstenberg Eden R., 1992: Evaluation of a new automated blood culture system. Abstracts of the General Meeting of the American Society for Microbiology 92: 433

Gangler, P.; Metzler, E., 1988: Die periodontale und endodontale Differenzierung der Odontogenese - Der phylogenetische Weg zum Thekodont, Teil 1. Freiberger Forschungshefte Reihe C: 122-129 No. 419

Lomander, A.; Schreuders, P.; Russek Cohen, E.; Ali, L., 2002: A method for rapid analysis of biofilm morphology and coverage on glass and polished and brushed stainless steel. A tool for the rapid analysis of biofilms, using epifluorescence microscopy and image analysis was developed. The tool allows the evaluation of overall biofilm coverage and biofilm patch morphology. It will provide a quantitative method for identi...