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Germplasm Acquisition
Germplasm of tree fruit and nut crops and grapes is acquired through: (1) government-sponsored explorations in the centers of diversity of crops; (2) foreign and domestic inter-institutional exchange of germplasm; (3) contribution from university researchers, plant breeders, botanical gardens, arboreta, private collectors and hobbyists. Acquisitions may be in the form of cuttings, budwood, or seeds and all international germplasm accessions pass through the National Plant Germplasm Quarantine Center in South San Francisco, California, where they are tested for diseases and pests before they are released to the repository.
Germplasm Preservation
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Germplasm is preserved through clonal propagation of accessions. Cultivars and species suitable for propagation by cuttings are rooted on mist beds and/or heat pads in greenhouses. Rooted plants are maintained in screenhouses or are transferred to the field collection.
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Other accessions are propagated through grafting/budding onto suitable rootstocks. Grafted material is also kept in a greenhouse until the graft union has healed and the plant is large enough to be moved to a lathhouse. After about two years in the lathhouse, accessions are planted in the field where they are maintained and harvested for germplasm. Copies of grape, grape relatives and Prunus are also kept in a permanent collection in screenhouses.
Germplasm Distribution Policies & Procedures
Almost all plant material from the Davis gene bank is distributed as cuttings and deadlines for orders are those appropriate for such cuttings. These cuttings must be rooted or grafted/budded to produce a plant. Material of Juglans, Pistacia, and most Prunus are very difficult to root and the recipient must obtain appropriate rootstocks prior to receipt of scion cuttings.
We receive some requests for seed. Appropriate timing for requests of seed vary greatly between collections and requesters should allow considerable lead time. Recipients should be aware that most Davis-NCGR accessions are outcrossing and seed from requested accessions will have a known female parent but likely have very diverse male parents. Davis-NCGR Pistacia plantings are not managed for seed production and requesters should expect that few seed will be available in this genus.
Shipping within the U.S.
Domestic orders are sent Priority Overnight by Federal Express. A packing list and certificate of quarantine compliance are shipped with the plant material when required. When orders are shipped within the U.S, it is necessary for the receipent to obtain and submit a Fed Ex account number. Fed Ex account numbers may be obtained by calling 1-800-GO-FEDEX.
Foreign Requests
NCGR distributes germplasm to foreign requesters in compliance with federal quarantine regulations and restrictions of the United States and the recipient country. The requester MUST provide an import permit (IP), when required, with an English translation. If possible, the IP should be open dated. This assists us in resending material that did not survive original shipment. Our USDA plant inspector can provide the phytosanitary certification only after we have received the required IP from the requesting country. Whenever possible, please send or FAX a copy of the IP with the original plant request.
Foreign orders are sent by DHL. When orders are shipped outside the U.S, it is necessary for the receipent to obtain and submit a DHL account number. DHL account numbers can be obtained by calling 1-800-CALL-DHL.
Distribution Priorities
We ask that a statement concerning the intended use for the germplasm be provided by the requester. Timely, seasonal requests from bona fide researchers are given first priority. Requesters seeking plant material for a germplasm exchange or because NCGR is the sole source are filled next. Other requests are honored as plant material is available.
Submitting an Order
Please indicate dormant cuttings, budwood/scionwood, or summer cuttings or budwood. Please use accession numbers when ordering material. Orders for dormant cuttings or budwood must be received by December 1st, and are shipped in January/February. Orders for summer budwood/cuttings and open-pollinated seeds must be received by May 1st, and are shipped in June-August. Orders for pollen must be received by January 31st, and are shipped at appropriate times for each crop.
*Summer request for Punica and Morus germplasm should only be made if propagation will occur under mist.
*Due to great demand for dormant cuttings and their higher rooting success rate, we will no longer have routine distribution of Ficus summer cuttings.
Please be sure to include a phone number, email address, and Fed Ex/DHL account number.
Orders must be submitted via email to Bernie Prins
Order Form
Crop Pages
Actinidia (kiwifruit) Cudrania (mulberry relative) Diospyros (persimmon) Ficus (fig) Juglans (walnut) Olea (olives) Morus (mulberry) Pistacia (pistachio) Prunus (peach, plum, apricot, cherry, almond, and related species) Pterocarya (walnut relative) Punica (pomegranate) Vitis (grape)
Grin Accession Query
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