FIGURE 1. The L1 plant produces inflorescences instead of tendrils.
From the following article:
Association of dwarfism and floral induction with a grape 'green revolution' mutation
Paul K. Boss and Mark R. Thomas
Nature 416, 847-850(25 April 2002)
doi:10.1038/416847a
a, Main shoot of an L1 plant. b, Main shoot of an L2 plant. c, Shoot from a latent bud of an L1 plant (leaves removed). d, Shoot from a latent bud of an L2 plant. e, Scanning electron micrograph of a shoot meristem from a wild-type latent bud showing an uncommitted primordium (UP) that has separated from the shoot apical meristem (SAM). f, Scanning electron micrograph of a tendril tip from an L2 plant. g, Scanning electron micrograph showing flowers at the tip of a tendril-like structure from an L1 plant. Scale bar in e–g, 100 
m.
