A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Malus robusta has left across the world's sequence archives.
At a glance
eDNA detections1
Countries1
06Genome at a glanceCCDB · GoaT · NCBI
The complete instruction manualMalus robusta carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Genome sizehow big the whole instruction manual is
Genome size728 610 000 bp
Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).
BACTERIUM Carsonella ruddii0.00016 Gb
FUNGUS0.04 Gb
INSECT0.25 Gb
THIS GENOME Malus robusta0.73 Gb
HUMAN3.2 Gb
WHEAT17 Gb
FERN Tmesipteris160.45 Gb
Chromosomes & ploidyhow the DNA is packaged
2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.
Chromosomes2n = 34 n = 17
Ploidy2× diploid · measured
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 512×CCDB · ipcn-api-dl
CCDB · ipcn-api-dl — Song, W. q., X. l. Li & Y. l. Chen. 1989. Studies on the karyotype evolution and relationship of Maloideae. Pp. 327--333 in D. Hong (editor), Plant Chromosome Research 1987.
CCDB · ipcn-api-dl — Chen, R. y. 1993. (editor), Chromosome Atlas of Chinese Fruit Trees and Their Close Wild Relatives. Chromosome Atlas Chin. Princ. Econ. Pl. 1.
Ploidy records — measured levels and diploid/polyploid inferences · click for sources
diploid1×GoaT · Kew Plant DNA C-values Database
GoaT · Kew Plant DNA C-values Database
Sequencing statusassembly quality — how far to trust these numbers
Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.
Assembly levelComplete Genome
Completeness98.7% BUSCO
08Occurrence & distribution
Record type80 records
Wild obs. + sensor38
Museum / vouchered37
Cultivated / captive5
Range
Area of Occupancy AOO248 km²
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy74% within 1 km
≤100 m 16≤1 km 4≤10 km 3>10 km 4
27 georeferenced · 11 without coordinates
Open the mapobservation + sensor38
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Coordinate accuracy100% within 1 km
≤1 km 7
7 georeferenced · 30 without coordinates
Open the institutions mapphysical evidence37
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Coordinate accuracy100% within 1 km
≤100 m 3
3 georeferenced · 2 without coordinates
Open the mapnot free-living5
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions6 of 10 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
GBS RAN - Glavny Botanichesky Sad Rossijskoj Akademii Nauklocation not on record
13
WTUlocation not on record
4
Vancouver, CA
3
Royal Botanical Gardenslocation not on record
3
Denver, US
2
St. Paul, US
2
Madison, US
2
Dekalb, US
1
Moscow State Universitylocation not on record
1
Bronx, US
1
10 institutions · 32 of 37 vouchered records shown · 4 without an institution code
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
09Environmental DNA1 detections
Where the DNA of Malus robusta was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Detections DNA found1
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 1 detections have coordinates
Open the map1 country0
How strong is each trace?
DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median-2.20 °C -2.20–-2.20
Seasonal swing summer↔winter43.2 °C
Max temp (day)1.70 °C
Min temp (night)-7.00 °C
Precipitation36.6 mm/mo
Air humidity60.4 %
Moisture balance-10.1 mm/mo
Vapour deficit364 Pa
Wind speed2.10 m/s
Cloud cover58.5 %
CHELSA 1981–2010, ~9 km grid, at location & month of 1 detection point · median with p10–p90 · reflects where sampling happened, not only the true niche
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.
