Plant Ecology

, Volume 215, Issue 9, pp 987–996

Reproductive allocation in rhizomatous, seminiferous, and pseudoviviparous Leiothrix (Eriocaulaceae) species

  • Ana Carolina Neves
  • Fernando Brina Nogueira
  • Luciana Rocha de Assis
  • Adriano Pereira Paglia
  • Lúcio Cadaval Bedê
  • Rogério Parentoni Martins
Article

DOI: 10.1007/s11258-014-0355-6

Cite this article as:
Neves, A.C., Nogueira, F.B., de Assis, L.R. et al. Plant Ecol (2014) 215: 987. doi:10.1007/s11258-014-0355-6

Abstract

Pseudoviviparous species are considered to rely almost entirely on vegetative propagation, because flowers are replaced by sprouts, and seedling recruitment is rare. We compared reproductive allocation (inflorescence and seed production) in three propagation modes presented by sympatric species of Leiothrix (Eriocaulaceae): rhizomatous and seminiferous (RS—L. crassifolia); rhizomatous, seminiferous, and pseudoviviparous (RSP—L. spiralis); and seminiferous and pseudoviviparous, in which seed production is considered rare due to reduced inflorescence size and small number of pistillate flowers (SP—L. arrecta and L. propinqua). We hypothesize that such propagation modes constitute a continuum of reproductive investment, that is: RS > RSP > SP. We harvested 154 Leiothrix spp. individuals at the Serra do Cipó, SE Brazil, from which we recorded the number of capitula and seeds, mean seed weight, and dry biomass allocated to plant structures. We then compared distinct propagation modes in relation to reproductive allocation, inflorescence-based and seed-based reproductive effort, and biomass partitioning. Contrary to expectations, the reproductive investment hierarchy found was SP ≥ RS > RSP. Our results do not fully concur with the current view that pseudoviviparous plants allocate few resources to reproduction. We suggest that the larger reproductive investment observed in SP helps to wait for better recruitment conditions in crowded and highly competitive mature populations (temporal escape), and to cope with destructive disturbances such as fire, since SP species lacks rhizomes.

Keywords

Propagation modes Rhizome Seminiferous Pseudovivipary Reproductive allocation Reproductive effort 

Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Ana Carolina Neves
    • 1
  • Fernando Brina Nogueira
    • 1
  • Luciana Rocha de Assis
    • 1
  • Adriano Pereira Paglia
    • 1
  • Lúcio Cadaval Bedê
    • 2
  • Rogério Parentoni Martins
    • 3
  1. 1.Departamento de Biologia GeralUniversidade Federal de Minas GeraisBelo HorizonteBrazil
  2. 2.Instituto Terra BrasilisBelo HorizonteBrazil
  3. 3.Departamento de BiologiaUniversidade Federal do Ceará, Centro de CiênciasFortalezaBrazil