General Information

Name: Helianthus annuus
NCBI Taxid: 4232
Description: Helianthus annuus, the common sunflower, is an annual, branched sunflower species, the wild progenitor of cultivated sunflower (also H. annuus). Native to North America, its natural range spans from Northern Mexico to Southern Canada. Generally found of mesic, disturbed soils, populations of H. annuus have adapted to a variety of extreme conditions (high salinity, drought, low nutrients, flooding...). Together with other wild sunflower species, it is a long-standing model system for speciation, adaptation, ecotype formation and domestication studies, and, more recently, genomic studies. Wild sunflowers have also contributed numerous useful alleles to the cultivated sunflower gene pool.

H. annuus is diploid and has a relatively large (3.5 Gbp), extremely repetitive genome (TE represent >75% of the genome), organized in 17 chromosomes. Numerous large chromosomal rearrangements and structural variants distinguish its genome from that of other wild sunflowers, and of cultivated sunflower.

Available Datasets

Dataset NameBuild#Samples#SNPs#Chromosomes#Phenotypes#CovariatesSharedPrivateOwner
wild Helianthus annuus, SNPs remapped to HA4121614488792017860RiesebergLab

Available Gene-Annotation Sets

Gene Annotation Set NameNumber of Genes
HA412-HOv2 Eugene v185834

Chromosome Identifier

Chromosome ID Chromosome Name Start Position End Position
Ha412HOChr01 Ha412HOChr01 1 159217232
Ha412HOChr02 Ha412HOChr02 1 184765313
Ha412HOChr03 Ha412HOChr03 1 182121094
Ha412HOChr04 Ha412HOChr04 1 221926752
Ha412HOChr05 Ha412HOChr05 1 187413619
Ha412HOChr06 Ha412HOChr06 1 157516673
Ha412HOChr07 Ha412HOChr07 1 162054088
Ha412HOChr08 Ha412HOChr08 1 177936428
Ha412HOChr09 Ha412HOChr09 1 200254352
Ha412HOChr10 Ha412HOChr10 1 190919061
Ha412HOChr11 Ha412HOChr11 1 199477616
Ha412HOChr12 Ha412HOChr12 1 179008902
Ha412HOChr13 Ha412HOChr13 1 175682153
Ha412HOChr14 Ha412HOChr14 1 189916084
Ha412HOChr15 Ha412HOChr15 1 186609792
Ha412HOChr16 Ha412HOChr16 1 218409126
Ha412HOChr17 Ha412HOChr17 1 205797941


authorstitlepub yearjournalvolumepagesdoi
Marco Todesco et al.Massive haplotypes underlie ecotypic differentiation in sunflowers2020NatureNAN-A10.1038/s41586-020-2467-6