TABLE 1

Comparison of 14 traits between a primitive sunflower domesticate (the Hopi landrace) and its wild progenitor (Helianthus annuus var. annuus)

TraitHopi landraceCommon sunflower
Days to flower100.0 ± 4.484.8 ± 4.4
Stem diameter (mm)21.7 ± 0.710.8 ± 0.7
Height (cm)358 ± 14.0171 ± 16.9
No. main stem leaves47.5 ± 1.021.7 ± 1.9
Leaf size (cm2)687 ± 23.8335 ± 27.7
No. branches0.4 ± 0.29.4 ± 1.6
No. heads1 ± 0.04.2 ± 0.6
Disk diameter (mm)75.3 ± 4.323.3 ± 1.9
No. ray flowers42.5 ± 3.823.7 ± 1.6
Self-compatibilityYesNo
Achene weight (g/100)2.9 ± 1.10.6 ± 0.1
ShatteringNoYes
Seed dormancyNoYes
  • All values are expressed as mean ± standard error