| rapd markers linked to eastern filbert blight resistance in corylus avellana. | a total of 1,110 decamer primers were screened for rapd markers linked to a dominant allele in hazelnut ( corylus avellana) that confers resistance to eastern filbert blight caused by anisogramma anomala. twenty rapd markers linked in coupling, and five markers linked in repulsion, were found. a seedling population was used to construct a linkage map of the region flanking the resistance locus. the map spans 46.6 cm, with 14 markers on one side of the resistance locus and eight on the other side ... | 2004 | 14569427 |
| a genetic linkage map for hazelnut (corylus avellana l.) based on rapd and ssr markers. | a linkage map for european hazelnut (corylus avellana l.) was constructed using random amplified polymorphic dna (rapd) and simple sequence repeat (ssr) markers and the 2-way pseudotestcross approach. a full-sib population of 144 seedlings from the cross osu 252.146 x osu 414.062 was used. rapd markers in testcross configuration, segregating 1:1, were used to construct separate maps for each parent. fifty additional rapd loci were assigned to linkage groups as accessory markers whose exact locat ... | 2006 | 16498462 |
| maturation and seasonal discharge pattern of ascospores of anisogramma anomala. | abstract maturation and release of ascospores of anisogramma anomala were monitored over a 6-year period (1988 to 1995) in european hazelnut orchards located in western oregon. perithecia of a. anomala were dissected from stromata collected monthly from september to may to determine spore maturation. spore maturation began in late summer; by january, >90% of the spores were morphologically mature. similarly, both the number of mature ascospores per perithecium and the proportion of ascospores th ... | 1998 | 18944849 |
| factors affecting the release of ascospores of anisogramma anomala. | abstract relationships between environmental factors and release of ascospores of anisogramma anomala, the causal agent of eastern filbert blight, were examined in four european hazelnut (corylus avellana) orchards during a 2-year period. in each orchard, burkhard volumetric spore traps and automated weather-monitoring equipment were deployed for 12-week periods beginning at budbreak, when hazelnut becomes susceptible to infection. ascospores of a. anomala were released when stromata on the surf ... | 1998 | 18944980 |
| A bacterial artificial chromosome library for 'Jefferson' hazelnut and identification of clones associated with eastern filbert blight resistance and pollen-stigma incompatibility. | European hazelnut (Corylus avellana L.) is the only economically important nut crop in the family Betulaceae. Because of its small genome size (~385 Mb / 1C), relatively short life cycle, availability of a dense linkage map, and amenability to transformation by Agrobacterium, the European hazelnut could serve as a model plant for the Betulaceae. Here we report the construction of a bacterial artificial chromosome (BAC) library for 'Jefferson' hazelnut using the cloning enzyme MboI and the vector ... | 2011 | 21936690 |
| spatial and temporal increase of eastern filbert blight in european hazelnut orchards in the pacific northwest. | abstract since its first detection in southwest washington state 30 years ago, eastern filbert blight, caused by anisogramma anomala, has spread slowly southward ( approximately 2 km/year) into the willamette valley of oregon, an important hazelnut production region. experiments were conducted to measure gradients of disease spread, rates of disease increase as affected by distance from an inoculum source and variation in host plant resistance, and dispersal of ascospores of a. anomala from dise ... | 2001 | 18943337 |