Toward understanding inflorescence development and architecture in Passiflora: insights from comparative anatomy and expression of APETALA1

The inflorescence of Passiflora species originates from a bud complex that derives from an initially undivided meristem and ultimately produces flowers and tendrils. Because the development of the inflorescence structures derived from such meristems has been variously interpreted, we investigated the ontogeny of the bud complex and the expression of APETALA1 (AP1) in Passiflora species.The anatomical development of 15 species of Passiflora was...