First Report of Bot Canker Caused by Diplodia corticola on Coast Live Oak (Quercus agrifolia) in California
نویسندگان
چکیده
منابع مشابه
Spectral absorption features as indicators of water status in coast live oak ( Quercus agrifolia ) leaves
A total of 139 reflectance spectra (between 350 and 2500 nm) from coast live oak (Quercus agrifolia) leaves were measured in the laboratory with a spectrometer FieldSpecAPro FR. Correlation analysis was conducted between absorption features, three-band ratio indices derived from the spectra and corresponding relative water content (RWC, %) of oak leaves. The experimental results indicate that t...
متن کاملIs variation in susceptibility to Phytophthora ramorum correlated with population genetic structure in coast live oak (Quercus agrifolia)?
California coastal woodlands are suffering severe disease and mortality as a result of infection from Phytophthora ramorum. Quercus agrifolia is one of the major woodland species at risk. This study investigated within- and among-population variation in host susceptibility to inoculation with P. ramorum and compared this with population genetic structure using molecular markers. Susceptibility ...
متن کاملStatus of Transplanted Coast Live Oaks (Quercus agrifolia) in Southern California1
Twenty-five coast live oaks (Quercus agrifolia) ranging in size from 15 to 100 cm (diameter at breast height), transplanted to accommodate housing developments at three different sites in Calabasas, Calif., were studied for 3 to 4 years after boxing. Transplanted trees, plus 15 native control trees, were monitored quarterly. Water potential, shoot and root growth, and visual condition were meas...
متن کاملIncreasing Distance from California Bay Laurel Reduces the Risk and Severity of Phytophthora ramorum Canker in Coast Live Oak
Foliar infections in California bay (Umbellularia californica) are the most important known source of inoculum contributing to Phytophthora ramorum canker in coast live oak (Quercus agrifolia). This research addressed the question whether there is a “safe” distance between California bay and coast live oak beyond which the risk of disease is acceptably low. We quantitatively evaluated bay cover...
متن کاملCoast Live Oak Thinning Study in the Central Coast of California—Fifth-Year Results
A long-term thinning study was established in ten stands of coast live oak (Quercus agrifolia Née) in the Central Coast of California. Information about diameter, basal area, and volume growth and yield has been obtained from unthinned control plots and from plots thinned to 50 and 100 square feet of basal area per acre measured in 1984 and 1989. Both basal area and total volume growth percenta...
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ژورنال
عنوان ژورنال: Plant Disease
سال: 2010
ISSN: 0191-2917,1943-7692
DOI: 10.1094/pdis-04-10-0266