Abstract Detail

Evolutionary Developmental Biology (Evo-Devo)

Guan, Clarice [1], Skinner, David [2], Specht, Chelsea [3].

Piecewise phyllotaxis in Costus (Costaceae).

Phyllotaxis (the arrangement of organs on the shoot) can be broken into component traits which are traced back to the morphology and activity of the shoot apical meristem. Of these traits, the divergence angle between leaves is a key part to describing shoot architecture; however, in shoots of different ages in the spiral gingers (Costus, Costaceae, Zingiberales), we find that these angles are affected by secondary growth processes including petiole twisting and shoot coiling. In this morphological study, we have measured divergence angles for young vegetative shoots vs. older flowering shoots of different Costus species, finding that divergence in the latter has greater magnitude and variation than in the former.

1 - Cornell University, School of Integrated Plant Sciences, Ithaca, NY, 14853, USA
2 - Le Jardin Ombragé, Tallahassee, FL, 32308, USA
3 - Cornell University, School of Integrative Plant Science and L.H. Bailey Hortorium, 502 Mann Library, Ithaca, NY, 14850, USA

Keywords:
Phyllotaxis
Costus
Zingiberales.

Presentation Type: Poster
Session: P, Evolutionary Developmental Biology (Evo-Devo) Posters
Location: Virtual/Virtual
Date: Tuesday, July 28th, 2020
Time: 5:00 PM Time and date to be determined
Number: PEV009
Abstract ID:249
Candidate for Awards:None