Sistema reproductivo de Trichopetalum plumosum (Ruiz & Pav.) J.F. Macbr. (Asparagaceae), geófita endémica de Chile

Translated title of the contribution: Breeding system of trichopetalum plumosum (Ruiz & Pav.) J.F. Macbr. (asparagaceae), geophyte endemic to chile

Marcela Cuartas-Domínguez, Alejandrapaola Rojas-Céspedesjara-Arancio, Paola Jara-Arancio, Mary T.K. Arroyo

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The breeding system of the geophyte endemic to Chile Trichopetalum plumosum (Ruiz & Pav.) J.F. Macbr. (Asparagaceae) was evaluated with five controlled pollination treatments (agamospermy, autonomous autogamy, self-pollination, cross-pollination and natural/control). Emasculated and unpollinated flowers did not produce fruits, therefore, this is a non-apomictic species and needs pollen for seed production. Fruit production via cross and natural pollination treatments were high with 70.0 and 90.9%, respectively. Despite the low production via self-pollination (43.3%), autonomous autogamy (90.0%) achieved high values as cross and natural pollination treatments. The results for the mean number of seeds per flower were similar to fruiting. However, analysis of the mean number of seeds per fruit did not show significant differences. These results indicate that the population of T. plumosum is self-compatible with a high capacity for autonomous autogamy. It could be possible that autonomous autogamy of this species occurs when the stamens of the flowers move toward the stigma while they close and wither at the end of the day, corresponding to a delayed selfing mode.

Translated title of the contributionBreeding system of trichopetalum plumosum (Ruiz & Pav.) J.F. Macbr. (asparagaceae), geophyte endemic to chile
Original languageSpanish
Pages (from-to)73-81
Number of pages9
JournalGayana - Botanica
Volume74
Issue number1
DOIs
Publication statusPublished - 2017
Externally publishedYes

ASJC Scopus subject areas

  • Ecology
  • Plant Science
  • Horticulture

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