Abstract Detail

Reproductive Processes

Tiernan, Nichole M. [1], Ocampo, Sofia [2], Dominguez, Alejandra [2].

A Study of the Breeding System of Plumeria (Apocynaceae).

Tropical garden enthusiasts prize the Neotropical genus Plumeria L. (Apocynaceae; Rauvolfioideae), commonly known as frangipani, for its showy flowers. 22 species are recognized as Caribbean Island endemics (Acevedo and Strong 2012), and worldwide nearly 300 cultivars (mostly of P. rubra L.) are grown. Despite its popularity as an ornamental plant, much remains unknown about the genus as a whole, including its natural reproductive system. Breeding systems affect the genetic variability of plant populations. Studies in reproductive biology are vital to understanding this genetic variability and in turn assessing the vulnerability of a species. We characterize the breeding system for several species of Plumeria using the living collection at Fairchild Tropical Botanic Garden in Miami, Florida. We present data for each species on self-compatibility, self-incompatibilty, and for one species with multiple individuals we present cross-pollination data. We also examine subsequent fruit set and corresponding seed viability. If rarely endemic species of Plumeria are pollinator-dependent for sexual reproduction, the implications for this genus in its native habitat, a biodiversity hotspot, could be significant.

1 - Florida International University, Biological Sciences, University Park, Miami, FL, 33199, United States
2 - Florida International University, University Park, Miami, FL, 33199, United States

reproductive biology
self incompatibility
moth pollination
Caribbean Islands.

Presentation Type: Oral Paper
Number: 0001
Abstract ID:679
Candidate for Awards:None

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