Articles
Conservation status of hazelnut genetic resources at the National Clonal Germplasm Repository
Article number
1379_8
Pages
49 – 52
Language
English
Abstract
The United States national collection of hazelnut (Corylus L.) genetic resources is preserved at the US Department of Agriculture, Agricultural Research Service, National Clonal Germplasm Repository (NCGR) in Corvallis, Oregon.
Hazelnuts are native throughout temperate regions of the northern hemisphere.
There are currently 854 accessions at the NCGR-Corvallis, representing 12 of 13 recognized shrub and tree species of Corylus. These include named cultivars, selections, and species representatives from 40 countries.
Accessions in the collection at the NCGR-Corvallis are cultivated in the field and available to researchers worldwide for evaluation, research, or breeding.
In addition to an on-site backup collection representing 4% of the collection, there are 87 accessions cryopreserved at the USDA National Laboratory for Genetic Resources Preservation in Fort Collins, Colorado, and 102 core accessions backed up in a field collection at the NCGR in Parlier, California.
So far, 210 accessions of mostly C. avellana cultivars and some C. avellana × C. americana hybrid selections, were genotyped with a 14-SSR hazelnut fingerprinting set, and 149 cultivars were characterized with 21 SSRs, for a total of 359 accessions.
Of these, 88 plants represent 27 genotypes which include synonyms, mis-identified accessions, sports, or clones that exhibit differences in pellicle or leaf color (White Filbert and its clonal variants). Genetic diversity, structure, and evolution in hazelnut were evaluated in 158 accessions representing 11 Corylus species and 44 interspecific hybrids using seven nuclear and five chloroplast SSRs.
Cluster and structure analyses agreed with classic taxonomic relationships in hazelnut, and supported C. californica as a distinct species and inclusion of C. maxima into C. avellana. Phylogeographical relationships among the resulting 21 chlorotypes confirm Asia as a refugium from which hazelnut dispersed to Europe through the Mediterranean, and to North America across the Atlantic and/or the Bering land bridge.
Since 1982, the NCGR-Corvallis has distributed 869 Corylus accessions to requestors in 29 countries.
This germplasm was distributed as budwood, cuttings, DNA, fruit, leaves, maternal flowers, plants, pollen, rhizomes, scions, seeds, seedlings, and tissue cultures.
Germplasm can be requested from the Germplasm Resource Information Network (GRIN) online database application GRIN-Global.
Hazelnuts are native throughout temperate regions of the northern hemisphere.
There are currently 854 accessions at the NCGR-Corvallis, representing 12 of 13 recognized shrub and tree species of Corylus. These include named cultivars, selections, and species representatives from 40 countries.
Accessions in the collection at the NCGR-Corvallis are cultivated in the field and available to researchers worldwide for evaluation, research, or breeding.
In addition to an on-site backup collection representing 4% of the collection, there are 87 accessions cryopreserved at the USDA National Laboratory for Genetic Resources Preservation in Fort Collins, Colorado, and 102 core accessions backed up in a field collection at the NCGR in Parlier, California.
So far, 210 accessions of mostly C. avellana cultivars and some C. avellana × C. americana hybrid selections, were genotyped with a 14-SSR hazelnut fingerprinting set, and 149 cultivars were characterized with 21 SSRs, for a total of 359 accessions.
Of these, 88 plants represent 27 genotypes which include synonyms, mis-identified accessions, sports, or clones that exhibit differences in pellicle or leaf color (White Filbert and its clonal variants). Genetic diversity, structure, and evolution in hazelnut were evaluated in 158 accessions representing 11 Corylus species and 44 interspecific hybrids using seven nuclear and five chloroplast SSRs.
Cluster and structure analyses agreed with classic taxonomic relationships in hazelnut, and supported C. californica as a distinct species and inclusion of C. maxima into C. avellana. Phylogeographical relationships among the resulting 21 chlorotypes confirm Asia as a refugium from which hazelnut dispersed to Europe through the Mediterranean, and to North America across the Atlantic and/or the Bering land bridge.
Since 1982, the NCGR-Corvallis has distributed 869 Corylus accessions to requestors in 29 countries.
This germplasm was distributed as budwood, cuttings, DNA, fruit, leaves, maternal flowers, plants, pollen, rhizomes, scions, seeds, seedlings, and tissue cultures.
Germplasm can be requested from the Germplasm Resource Information Network (GRIN) online database application GRIN-Global.
Publication
Authors
G. Flores, N.V. Bassil, L. Reinhold
Keywords
Corylus, filbert, germplasm
Groups involved
Online Articles (78)