The National Clonal Germplasm Repository for Citrus & Date (NCGRCD) in Riverside, California is currently renovating its existing protective structures. The screenhouse in which the pathogen-tested budsource trees are maintained has been re-screened to better exclude insects and other pests. Previous breeches occurred due to separation at the seams. The replacement screens have been installed so that there are no exposed exterior seams. The screenhouse irrigation system was also renovated so that all PVC pipes are elevated. This will make detection and repair of leaks much easier. In addition, the gravel floors in the screenhouse and the greenhouses are being removed and replaced with heavy duty weed barrier. Another renovation anticipated is replacement of the emergency generator with a new one which will meet current emissions standards. Also underway is the installation of a large-capacity autoclave for disposal of contaminated or suspect plant material, per APHIS requirements.
NCGRCD is also anticipating some changes in staffing structure. In years past, there were three technician positions associated with plant care. Due to various factors, there have only been two plant technicians in recent years. Recruitment is underway for a Category 3 scientist to work on plant propagation and micro-propagation. This will bring the number of plant-associated positions back to three, with the Category 3 position having a higher level of responsibility.
Approximately new 30 citrus accessions are anticipated for 2024. This represents several years of work. Due to quality-control issues stemming from the Covid shutdowns, the Center has had to re-index two years of accessions. Final indexing should be completed in the first or second quarter of 2024, and the Center anticipates getting back to an annual cycle of 15 – 20 accessions sanitized per year.
Renovated NCGRCD screenhouse showing new screening, elevated irrigation system, and new floor covering.
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