... apex; thin arrow, determinate meristem; thick arrow, indeterminate meristem producing extra organs or meristems. *Author for correspondence (e-mail: maizesh@nature.berkeley.edu ) 11 3 2002 © 2002. 2002 Determinacy Meristem Maize Ovule Floral reversion Spikelet...

... to cause a stable transition from vegetative to reproductive development. In contrast, a floral inductive stimulus is required continuously in several other species, and its absence can cause either inflorescence or floral reversion. In inflorescence reversion, a shoot ceases to produce flowers and reverts...