High priority taxa

Following taxa (10 out of 28) were found to be high priority taxa to collect:

  • H. brachyantherum
  • H. capense
  • H. comosum
  • H. cordobense
  • H. erectifolium
  • H. flexuosum
  • H. fuegianum
  • H. guatemalense
  • H. procerum
  • H. tetraploidum

See the priorities list here

Identified gaps for Hordeum genepool

(see downloads)

We found data for 27 wild species and 1 infraspecific taxon (H. vulgare subsp. spontaneum). The different taxa are classified as follows, according to their closeness to the cropped species H. vulgare subsp. vulgare using Maxted and Kell (2009) as follows:

Primary wild relatives
Secondary wild relatives
Tertiary wild relatives
H. vulgare subsp. spontaneum
H. bulbosum
H. murinum
H. pusillum
H. intercedens
H. euclaston
H. flexuosum
H. muticum
H. chilense
H. cordobense
H. stenostachys
H. pubiflorum
H. halophilum
H. comosum
H. jubatum
H. arizonicum
H. procerum
H. lechleri
H. marinum
H. secalinum
H. capense
H. bogdanii
H. roshevitzii
H. brevisubulatum
H. brachyantherum
H. depressum
H. guatemalense
H. erectifolium
H. tetraploidum
H. fuegianum
H. parodii
H. patagonicum

The analysis dataset (download) contained 12,627 observations, with 10,977 (87%) being herbarium specimens and 1,650 (13%) being genebank accessions. The average number of total samples per taxon was 451 (standard deviation of 1,488), indicating data is abundant but concentrated in certain taxa. H. secalinum (meadow barley), accounting to a total of 7,797 samples (99% herbarium samples and 1% genebank accessions), H. bulbosum (bulbous barley), accounting to a total of 1,457 (77% herbarium and 23% germplasm), and H. pusillum (little barley), accounting to a total of 1409 (96% herbarium and 4% germplasm) are the taxa in which the great majority of data points are concentrated. Other taxa such as H. guatemalense (3), H. erectifolium (5), H. capense (9) were found to be less collected, less georeferenced or less characterized and they thus will require more extensive sampling to assess a ecogeographic characterization.

The gap analysis of the Hordeum genepool found that there are 10 taxa (H. brachyantherum, H. capense, H. comosum, H. cordobense, H. erectifolium, H. flexuosum, H. fuegianum, H. guatemalense, H. procerum, H. tetraploidum) that are either underrepresented or not represented in genebank holdings out of the 28 taxa under analysis and these taxa were therefore flagged as high priority species. There are 6 taxa (H. arizonicum, H. depressum, H. euclaston, H. intercedens, H. pusillum and H. secalinum) which are relatively poorly conserved ex-situ and were thus flagged as medium priority species; while 10 taxa are relatively well conserved (H. bogdanii, H. brevisubulatum, H. bulbosum, H. lechleri, H. muticum, H. parodii, H. pubiflorum, H. roshevitzii, H. stenostachys, H. vulgare subsp. spontaneum). Only two taxa were found to not require further conservation (H. chilense and H. patagonicum). Potential sampling zones were calculated for high priority species and are shown as follows:

Potential sampling richness

GE View in Google Earth

Potential sampling zones

GE View in Google Earth

Hordeum high priority taxa were found to be distributed in North America (western region of Canada and USA) and South America (Bolivia, Chile and Argentina). Zones in the figures above are those in which the species is likely to exist and no genebank accessions have been collected.

Brief description of data used in the analysis

Hordeum centers of diversity are found in Southwestern Asia, Central Asia, western North America and southern South America. Is it widely distributed in temperate areas in both hemispheres. The table below shows the number of records (herbarium, germplasm, total) used per species for the Hordeum genepool gap analysis.

Species
Genebank accessions
Herbarium samples
Total
Hordeum brachyantherum
125
547
672
Hordeum capense
9
0
9
Hordeum comosum
3
10
13
Hordeum cordobense
12
0
12
Hordeum erectifolium
5
0
5
Hordeum flexuosum
23
2
25
Hordeum fuegianum
42
0
42
Hordeum guatemalense
3
0
3
Hordeum procerum
21
0
21
Hordeum tetraploidum
23
3
26
Hordeum bogdanii
65
1
66
Hordeum brevisubulatum
22
4
26
Hordeum bulbosum
327
1130
1457
Hordeum lechleri
92
0
92
Hordeum muticum
65
12
77
Hordeum parodii
73
0
73
Hordeum pubiflorum
33
15
48
Hordeum roshevitzii
37
0
37
Hordeum stenostachys
100
6
106
Hordeum vulgare subsp. spontaneum
168
0
168
Hordeum arizonicum
19
15
34
Hordeum depressum
57
96
153
Hordeum euclaston
30
8
38
Hordeum intercedens
18
26
44
Hordeum pusillum
58
1351
1409
Hordeum secalinum
49
7748
7797
Hordeum chilense
69
3
72
Hordeum patagonicum
102
0
102

Species’ taxonomy was reviewed using Maxted et al. (2005) as a first stage, the GRIN taxonomical review in second place, and the Royal Botanic Gardens, Kew taxonomy database. After cross-checking and correcting both synonyms and orthography of the species’ names, a thorough georeferencing process is carried out to obtain a spatially explicit database containing as many records as possible for each species. After this, records outside continental boundaries were deleted and a final dataset was produced for analyses (download dataset).

These are the 66 different collections from which data were readily available:

  1. Arizona State University Vascular Plant Herbarium
  2. Artenvielfalt im Beckerbruch (Dessau)
  3. Artenvielfalt Kreis Giessen
  4. Auf Feld und Wiese / Bretlebener Weg (AWO - Kita Heldrungen)
  5. Australian National Herbarium (CANB)
  6. Botánica, Universidad de León: LEB-Cormo
  7. Botanical Society of the British Isles - Vascular Plants Database
  8. Bundesamt fuer Naturschutz / Netzwerk Phytodiversitaet Deutschland
  9. California State University, Chico
  10. Canadian Museum of Nature Herbarium
  11. CGN-PGR
  12. CONN GBIF data
  13. Database Schema for UC Davis [Herbarium Labels]
  14. Dirección General de Investigación, Desarrollo Tecnológico e Innovación de la Junta de Extremadura(DGIDTI): HSS
  15. Eintauchen in die Natur /Harraser Weg (AWO - Kita Oberheldrungen)
  16. Environment and Heritage Service - EHS Species Datasets
  17. Eppingen und Umgebung
  18. EUNIS
  19. EURISCO, The European Genetic Resources Search Catalogue
  20. Freigelaende Naturschutzscheune Reinheimer Teich (Kreis Darmstadt-Dieburg)
  21. Herbario de la Universidad de Salamanca: SALA
  22. Herbario de la Universidad de Sevilla, SEV
  23. Herbarium (UNA)
  24. Herbarium of Oskarshamn (OHN)
  25. Herbarium Willing
  26. inatura - Erlebnis Naturschau Dornbirn
  27. Internation Botanical Collections (S)
  28. Inventaire national du Patrimoine naturel (INPN)
  29. IPK Genebank
  30. Israel Nature and Parks Authority
  31. Jardín Botánico de Córdoba: Herbarium COA
  32. LaBoOb02
  33. Limnodata
  34. Lund Botanical Museum (LD)
  35. Missouri Botanical Garden
  36. National Vegetation Data bank
  37. Natural History Museum Rotterdam (NMR)
  38. NMNH Botany Collections
  39. Nordic Genetic Resources
  40. Observations du Conservatoire botanique national du Bassin parisien.
  41. Real Jardin Botanico (Madrid), Vascular Plant Herbarium (MA)
  42. Repatriación de datos del Herbario de Arizona (ARIZ)
  43. Rund um den Eichwald, Schulhof Friedrich Froebel Gymnasium- Bad Blankenburg
  44. Schulhof Sandhofenschule (Mannheim)
  45. seeds collected during expeditions, traditional culitvars and landraces are included
  46. Staatliches Museum fuer Naturkunde Stuttgart, Herbarium
  47. Take a Pride in Fife Environmental Information Centre - Records for Fife from TAPIF EIC
  48. The Deaver Herbarium, Northern Arizona University
  49. The System-wide Information Network for Genetic Resources (SINGER)
  50. UAM Botany Specimens
  51. Umgebung der Gesamtschule Hamburg-Winterhude
  52. United States National Plant Germplasm System Collection
  53. Universidad de Extremadura, UNEX
  54. Universidad de Granada, Herbario: GDA
  55. Universidad de Málaga: MGC-Cormof
  56. Universidad de Oviedo. Departamento de Biología de Organismos y Sistemas: FCO
  57. University and Jepson Herbaria DiGIR provider
  58. USDA PLANTS Database
  59. USU-UTC Specimen Database
  60. Utah Valley State College Herbarium
  61. Vascular Plant Collection
  62. Vascular Plant Collection - University of Washington Herbarium (WTU)
  63. Vascular Plant Herbarium, Oslo (O)
  64. Vascular Plant Type Specimens
  65. Vorderer Tiergarten (Dessau)
  66. VSN-Wiese

Downloads

Climatic niche model for H. arizonicum
Hordeum potential collecting zones
Hordeum potential collecting richness
Predicted species richness under current climatic conditions
Predicted species richness under future climatic conditions (year 2050, scenario SRES-A2a)
Changes on predicted species richness due to climate change
Sampling density (200km cell size) for germplasm accessions
Sampling density (200km cell size) for herbarium samples
Conservation priorities list for Hordeum genepool
Dataset used for this analysis

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3 Comments to “Hordeum genepool”

  1. Jose Piggin says:

    Why don’t H. murinum and H. marinum appear in the lists? Surely there must have been specimens of these taxa in the databases sampled in your survey - and they are interesting since their ranges overlap with H. bulbosum and H. vulgare ssp spontaneum.

  2. @Jose

    You are spot on with your comment

    The European barley database lists 176 Hordeum murinum and 79 H. marinum accessions.

    The query is a bit crude and slow by today’s standards but it delivers the goods;)

    http://barley.ipk-gatersleben.de/ebdb.php3

  3. Julian says:

    We discarded them on the wild relative stuff as we are including them on the cropped accessions gap analysis, which protocol is being currently developed and refined in order to be published on this site.

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