High priority taxa

Following taxa (25 out of 30) were found to be high priority taxa to collect:

  • C. aromaticus
  • C. cajanifolius
  • C. cinereus
  • C. confertiflorus
  • C. crassicaulis
  • C. crassus
  • C. goensis
  • C. grandiflorus
  • C. kerstingii
  • C. lanuginosus
  • C. latisepalus
  • C. lineatus
  • C. mareebensis
  • C. marmoratus
  • C. mollis
  • C. platycarpus
  • C. pubescens
  • C. reticulatus var. grandifolius
  • C. reticulatus var. maritimus
  • C. rugosus
  • C. scarabaeoides var. pedunculatus
  • C. scarabaeoides var. scarabaeoides
  • C. sericeus
  • C. trinervius
  • C. viscidus

See all priorities list here

Identified gaps for Cajanus genepool

(see downloads)

We found data for 26 wild species and 4 infraspecific taxa of two of the species (i.e. C. reticulatus, C. scarabaeoides), accounting to a total of 30 taxa for analysis. The different taxa were found to be classified as follows, according to their closeness to the cropped species C. cajan using Singh and Jauhar (2005) as follows:

Primary genepool
Secondary genepool
Tertiary genepool
C. cajan cultivars and landraces
C. acutifolius
C. cinereus
C. albicans
C. confertiflorus
C. cajanifolius
C. crassus
C. confertifolius
C. goensis
C. lanceolatus
C. latisepalus
C. lineatus
C. mollis
C. reticulatum
C. platycarpus
C. scarabeoides
C. rugosus
C. sericeus
All other species in the genus
C. trinervius
C. cajan subsp. pubescens

The analysis dataset (download) contained 798 observations, with 601 (75.3%) being herbarium specimens and 197 (24.7%) being genebank accessions. The average number of total samples per taxon was 42 (standard deviation of 88), which indicates that the information is not abundant and relatively concentrated in certain taxa (i.e. C. cinereus, C. latisepalus, C. marmoratus, C. reticulatus and C. scarabaeoides).

The gap analysis for Cajanus genepool found that there are 25 taxa that are either underrepresented or not represented in genebank holdings out of the 30 taxa under analysis, whilst one taxon (i.e. C. albicans) is relatively well represented and the other 4 taxa were flagged as medium priority taxa (C. acutifolius, C. lanceolatus, C. reticulatus, C. scarabaeoides); 18 of these taxa have less than 10 observations in total, which indicates the urgent need of a collecting mission for them (or the need of more genebank and herbarium data readily available). The rest of these taxa were mapped and their potential collecting zones are shown as follows:

Cajanus high priority taxa were found to be distributed along the northern region of Australia, Madagascar, sub-saharian Africa and Asia. Zones in the figures above are those in which the species is likely to exist and no genebank accessions have been collected. The greatest sampling-richness (see mapa) was found within the northern zones of Australia’s Northern Territory and part of the Western Territory.

Brief description of data used in the analysis

The centre of diversity of the Cajanus genepool is Australia, Africa and Asia (depending on species) and thus records of the different species are from these continents (i.e. Mid-east, Sub-saharan Africa, Northern Australia, India) and are distributed within different geographic areas. The table below shows the number of records (herbarium, germplasm, total) used per species for the Cajanus genepool gap analysis.

Species
Genebank accessions
Herbarium samples
Total
Cajanus acutifolius
4
75
79
Cajanus albicans
13
0
13
Cajanus aromaticus
0
7
7
Cajanus cajanifolius
2
0
2
Cajanus cinereus
0
46
46
Cajanus confertiflorus
0
11
11
Cajanus crassicaulis
0
8
8
Cajanus crassus
6
0
6
Cajanus goensis
6
2
8
Cajanus grandiflorus
0
2
2
Cajanus kerstingii
0
5
5
Cajanus lanceolatus
1
17
18
Cajanus lanuginosus
0
2
2
Cajanus latisepalus
0
50
50
Cajanus lineatus
9
0
9
Cajanus mareebensis
0
7
7
Cajanus marmoratus
0
65
65
Cajanus mollis
5
3
8
Cajanus platycarpus
9
0
9
Cajanus pubescens
0
28
28
Cajanus reticulatus
3
45
48
Cajanus reticulatus var grandifolius
0
52
52
Cajanus reticulatus var maritimus
0
8
8
Cajanus rugosus
6
0
6
Cajanus scarabaeoides
127
106
233
Cajanus scarabaeoides var pedunculatus
0
9
9
Cajanus scarabaeoides var scarabaeoides
0
52
52
Cajanus sericeus
3
0
3
Cajanus trinervius
3
0
3
Cajanus viscidus
0
1
1

Species’ taxonomy was reviewed using Maxted et Kell (2009) as a first stage and the GRIN taxonomical review in second place. 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.

These are the 14 different collections from which data were readily available:

1. Australian National Herbarium (CANB)

2. Harvard University Herbaria

3. Herbarium, Taiwan

4. Internation Botanical Collections (S)

5. Magnoliophyta- Taiwan Biodiversity Data for GBIF

6. Missouri Botanical Garden

7. NSW herbarium collection

8. Phanerogamie

9. Plants of Papua New Guinea

10. Real Jardin Botanico (Madrid), Vascular Plant Herbarium (MA)

11. The AAU Herbarium Database

12. The System-wide Information Network for Genetic Resources (SINGER)

13. Vascular Plant Type Specimens

14. Vascular plants of south-central China

Downloads

Climatic niche model for C. acutifolius
Climatic niche model for C. albicans
Climatic niche model for C. cinereus
Climatic niche model for C. lanceolatus
Climatic niche model for C. latisepalus
Climatic niche model for C. marmoratus
Climatic niche model for C. pubescens
Climatic niche model for C. reticulatus
Climatic niche model for C. reticulatus var. grandifolius
Climatic niche model for C. scarabaeoides
Climatic niche model for C. scarabaeoides var. scarabaeoides
Cajanus potential collecting zones
Cajanus potential sampling 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 Cajanus genepool
Dataset used for this analysis

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