New in the CGN collection

CGN frequently adds new material to its collections and new information to its publicly available data. Via this page you can easily check what's new!

August 2019 – August 2020

Spinach wild relative (Spinacia tetrandra) collected in Armenia and Azerbaijan

In 2011 CGN collected spinach in Armenia and Azerbaijan. This mission was sponsored by breeding companies that also assist with the multiplication of the material. An embargo period was agreed upon with the breeding companies that started after successful seed multiplication. The embargo period expired for a next batch of 10 samples. These samples are now part of our collection and available.

A total of 35 accessions are now available from this mission. A final batch of 10 accessions will follow at the end of 2020.

Read more in the publication: Acquisition and regeneration of Spinacia turkestanica Iljin and S. tetrandra Steven ex M. Bieb. to improve a spinach gene bank collection.

Spinach and lettuce varieties from breeding companies

Regularly we add breeding varieties, that are freely available, to our collection. We do so in cooperation with breeding companies. Often those varieties were included in the Dutch national variety list and/or in the European Common Catalogue. This material is added because it provides extra value to our collection in terms of genetic diversity.

The spinach accessions contain some Peronospora differentials and material that have resistances for several diseases.

  • Accession numbers: Lettuce: CGN25570 - CGN25578.
  • Accession numbers: Spinach: CGN25553 - CGN25567.

Check out these recently added varieties!

Spinach from Turkey

This accession was donated from Ukraine. The passport data are rather incomplete but this material was considered a  valuable extension of the genetic variation of CGN’s collection.

  • Accession number: CGN25552.

Lettuce Bremia differentials

Two accessions of cultivated lettuce that are part of the European differential set defined by the International Bremia Evaluation Board (IBEB).

  • Accession numbers: CGN25579 and CGN25580.

Durrum wheat from Ethiopia

An “old” Triticum turgidum land variety from the Harerge district collected in 1968 from a local market in Harar. It is a bulked sample from former accession numbers CGN07981 and CGN07984 that were identified as duplicates. The bulked sample is regenerated and available for distribution.

  • Accession number: CGN25541.

Radish and cauliflower breeders varieties

Cauliflower “Coleman” and radish “Rudi”, both breeders varieties from Dutch breeders, are added to the Cruciferae collection.

  • Accession numbers: CGN25568 and CGN25569.

Peronospora farinosa Pfs15 resistance in spinach

Nearly 400 accessions were tested by a total of 9 breeding companies. The embargo on these data has expired. In this Excel download you can find all available data on Peronospora farinosa including the recently added data on Pfs15. You can find the new data under experiment number E-0883 and method M-1156 in the workbook. CGN09546, CGN09611, CGN09612 and CGN09561 showed a high level of resistance for Pfs15.

The embargo of data on Pfs16 will expire in April 2022.

Bremia lactucae resistance in lettuce

Screening of 745 accessions by 7 breeding companies resulted in more than 2200 data points on resistance to Bremia races Bl:29, Bl:30, Bl:31. The embargo of these data has expired.

In this Excel download you can find all Bremia data. A total of 44,954 observations from 16 experiments. The recently published data have experiment number E-0923 and the methods M-1234, M-1235 and M-1236.

A collaborative screening program with new Bremia races is underway.

Characterization of spring wheat

47 Accessions of spring wheat were multiplicated in 2019 because the stocks ran out or they showed a poor germination rate. During multiplication the material was characterized for awnedness, growth height, homogeneity, seed color, seed shape, spike density and spike emergence type.

On this page you can find all raw phenotypic data and passport data on wheat! Behind the traits on this page you will see the number, and also the last entry date of the observations.

Characterization of spring barley

71 Accessions of spring barley were also multiplicated in 2019. These accessions were characterized for 9 traits including awnedness, hoodedness, spike density and growth height.

Check out the data on all traits of barley that we have collected!

Behind the traits on this page you will see the number, and also the last entry date of the observations.

Characterization of lamb’s lettuce

Accessions of Valerianella locusta, V. eriocarpa, V. carinata, V. rimosa and V.dentata were characterized for 10 descriptors amongst which leaf blistering, leaf shape and leaf glossiness. The accessions originate from The Netherlands, Germany, Slovenia and France. They are breeder’s varieties and Landraces, but also wild material from the Netherlands collected by CGN.

Check out these new data on our download page for Lamb’s lettuce. Behind the traits on this page you will see the number, and also the last entry date of the observations.

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      February 2019 – August 2019

      Lettuce wild relatives from Azerbaijan and Armenia

      Wild relatives of lettuce may be an important source of new traits to improve lettuce cultivars.

      In 2013 CGN collected wild relatives of lettuce (Lactuca sativa) in Azerbaijan and Armenia. Part of this material was already available, mainly consisting of L. serriola (47 accessions), but also including L. saligna (6), L. altaica (2), L. tatarica (2) and L. georgica (1).

      Recently 25 accessions of L. georgica, 10 of L. serriola, and 2 of L. quercina have been added to the collection, as the embargo on this material has expired.

      A total of 96 accessions are now available from this mission.

      Peppers from Spain, Maldives and Zambia

      This unique material was collected in the eighties for the former International Board for Plant Genetic Resources, nowadays Bioversity International. In consultation with Bioversity International, CGN has regenerated this material from safety duplicates since it has not always been made available by the collectors.

      • Accession numbers: CGN25524 – CGN25535.
      • Passport data included in: downloadable file (provides data of the entire CGN pepper collection).

      A total of more than hundred pepper samples have been revived from these IBPGR  collection missions and are available at CGN.

      Black salsify and wild relative

      A landrace of Scorzonera laciniata from Romania, obtained via Zaragoza, Spain (CGN 25540) and two samples of Tragopogon porrifolius (CGN 25536, CGN 25537) collected by CGN in the Netherlands.

      Old tomato varieties from Poland and USA

      This material was part of the IVT collection (precursor of CGN) and has recently been regenerated.

      • Accession numbers: CGN25538 and CGN25539.

      Peronospora farinosa Pfs14 resistance in spinach

      Over 400 accessions were tested by a total of 9 breeding companies. The embargo on the data has expired. In this Excel download you can find all available data on Peronospora farinosa including the recently added data on Pfs14. You can find the new data under experiment number E-0883 and methods M-1143 – M-1155 in the workbook. Some accessions showed a high rate of resistance!

      Bremia lactucae resistance in lettuce

      Screening of 745 accessions by 7 breeding companies resulted in nearly 3000 data points on resistance to Bremia  races Bl:25, Bl:26, Bl:27 and Bl:28. The embargo of these data has expired.

      In this Excel download you can find all Bremia data. A total of 42.666 observations from 15 experiments. The recently published data have experiment number E-0923. Have a look at this massive source of information!

      September 2018 - January 2019

      New wild spinach material collected in Armenia and Azerbaijan by CGN in 2011.

      The newly available accessions of the spinach wild relative Spinacia tetrandra may provide new genetic resources that can be used in research and crop breeding.

      For 16 accessions of S. tetrandra seed samples are now available for distribution. Nine accessions of S. oleracea originating from the same expedition were already made available earlier.

      A wild Spinacia tetrandra accession collected in Georgia in 2001

      In addition to the material collected during our expedition of 2011, a sample of S. tetrandra, originating from Georgia, was obtained from  the United States Department of Agriculture. After regeneration, this accession was included in our collection and is now available for distribution.

      • Accession number: CGN25475.

      21 new single seed descent lines in the Lactuca special collection

      Single seed descent lines of Lactuca accessions were developed in the context of a project entitled ‘International Lactuca Genomics Consortium’. Seed samples of the majority of lines were already made available earlier. Seed samples of 21 additional lines have now been added to the collection. This brings the total size of this collection on 470.

      Wild/weedy populations of Brassica oleracea from the Netherlands

      Collected by CGN on four salty locations of the coastal area.

      • Accession numbers: CGN25455 – CGN25458.

      Grasses from the Netherlands and France

      Two wild populations and a breeders variety of meadow grass from the Netherlands.

      • Accession numbers: CGN25476, CGN25477 and CGN25480

      A breeders variety of Lolium multiflorum from the Netherlands.

      • Accession number: CGN25478

      A breeders variety of Festuca arundinacea from France.

      • Accession number: CGN25479

      July 2018 - August 2018

      Unique lettuce material from a CGN mission to Armenia and Azerbaijan in 2013

      The new materials include a landrace of Lactuca sativa, 47 accessions of L. serriola, 2 of L. altaica, 1 of L. georgica, 6 of L. saligna and 2 of L. tatarica. This is the first batch of material from which the embargo has expired. More to come!

      Lettuce material from the European differential set

      Various accessions of cultivated lettuce, including material from the European differential set defined by the International Bremia Evaluation Board (IBEB) and European modern varieties that are no longer commercially important to breeding companies.

      • Accession numbers: CGN25386 - CGN25389 and CGN25449 - 25454.
      • Passport data included in: downloadable file (provides data of the entire CGN lettuce collection).

      Bremia resistance identified in a lettuce screening test

      Data on the level of resistance against a mixture of the races Bl:27, Bl:29 and Bl:31 of Bremia lactucae. The screening program was carried out in 2017 using nearly 200 accessions of L. serriola from the CGN collections. Several sources of high resistance were identified.

      January 2018 - June 2018

      Leek accessions from along the Nile

      3 Kurat landraces cultivated along the Nile (Allium ampeloprasum) from a collecting mission in Egypt in 1985 that were very difficult to regenerate but now available!

      Allium breeding lines From the Netherlands and Bulgaria

      2 A.schoenoprasum accessions from the Netherlands and a A.cepa accession from Bulgaria.

      Unique pepper material from the eighties saved and now available

      78 pepper accessions which were collected by IBPGR (currently Bioversity) in the eighties but only a small part was made available by the collectors. This material was also stored at CGN as safety duplicates. In consultation with Bioversity, CGN is regenerating this material to make it available. It concerns C. annuum landraces from Spain but also from Zambia, Syrian Arab Republic, Maldives and Bhuthan and 1 C. frutescens accession from Zambia.

      • Accession numbers:25300 - 25378.
      • Passport data included in: downloadable file (provides data of the entire CGN pepper collection).

      A wild C.annuum accession from Botanic Garden Nijmegen

      Lettuce material from the European differential set

      A variety of cultivated lettuce accessions, including material from the European differential set defined by the International Bremia Evaluation Board (IBEB) and European modern varieties that are no longer commercially important to breeding companies.

      • Accession numbers: 24674, 24696, 24698, 24718, 24728, 24729 and 25291 - 25299.
      • Passport data included in: downloadable file (provides data of the entire CGN lettuce collection).