Project Number: 6618-22000-026-01
Project Type: Reimbursable

Start Date: Jul 01, 2003
End Date: Jun 30, 2008

Objective:
Evaluate the potential use of remote sensing for detection of citrus canker outbreaks. Evaluate the potential use of canine detection of citrus canker in field applications. Determine the effect of meteorological events on the spread of citrus canker and estimate the infection probability distance through time. Examine the susceptibility/resistance of segregating populations of citrus rootstocks and scions to Asiatic citrus canker.

Approach:
The PI has extensive experience with the etiology and epidemiology of Asiatic citrus canker. A multivariate or stochastic model will be constructed to explain the maximum amount of variability and for predictive purposes. A wind tunnel and other devices will be constructed to examine the effect of various wind speeds and impact of rain on inoculum generation, dissemination, and infection. Air samples will be collected from citrus canker diseased trees to evaluate canine detection ability/reliability. Unique canine-identified aromatic compounds will be isolated and identified via HPLC and mass spectrophotometric methods. Through traditional cultivar selection/evaluation methods combined with sequencing attempt to determine possible resistance factors that can be incorporated into citrus germplasm to impart improved resistance/tolerance to citrus canker. Develop a spectral reflectance database using a hyperspectroradiometer to differentiate citrus canker symptoms of known age from inoculated plants and from other foliar disease and insect maladies.

Project Team

Gottwald, Timothy

Project Annual Reports

FY 2003

Related National Programs

Plant Diseases (303)