37 research outputs found
Evidence for a race-specific resistance factor in some lettuce (Lactuca sativa L.) cultivars previously considered to be universally susceptible to Bremia lactucae regel
No full textMechanisms by which genetically controlled resistance and virulence influence host colonization by fungal and bacterial pathogens
No full textSexual compatibility types of Bremia lactucae isolates originating from Lactuca serriola
No full textMechanisms by which genetically controlled resistance and virulence influence host colonization by fungal and bacterial pathogens
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Inheritance of virulence in Bremia lactucae to match several resistance factors in lettuce
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Strategy and techniques for mapping horticultural genomes
No full textHRI has adopted the strategy of establishing reference populations for genome mapping of horticultural species. In the case ofBrassica oleracea, doubled haploid families have been generated from crosses between subspecies. These lines can be maintained indefinitely by selfing, allowing accumulation of large amounts of data on defined genotypes (using molecular markers) which are then linked with replicated phenotypic assessment In the case of apple, reference progeny segregating for a large number of genes have been established and replicated by grafting for distribution to different regions of Europe. For both species, data are organised in relational databases, allowing full analysis of any relationships which might exist. Methods are being developed to optimise the process of identifying informative molecular markers, with particular emphasis on markers which can be used for a wide range of species
Root hair infection by Plasmodiophora brassicae in clubrootresistant and susceptible genotypes of Brassica oleracea, B. rapa and B. napus
No full textThe identification of a gene for race-specific resistance to Peronospora parasitica (downy mildew) in Brassica napus var. oleifera (oilseed rape)
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