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

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

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

1 Cita (Scopus)

Resumen

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.

Título traducido de la contribuciónBreeding system of trichopetalum plumosum (Ruiz & Pav.) J.F. Macbr. (asparagaceae), geophyte endemic to chile
Idioma originalEspañol
Páginas (desde-hasta)73-81
Número de páginas9
PublicaciónGayana - Botanica
Volumen74
N.º1
DOI
EstadoPublicada - 2017
Publicado de forma externa

Palabras clave

  • Autonomous autogamy
  • Delayed selfing
  • Geophyte
  • Self-compatibility
  • Subfamily Lomandroideae

Áreas temáticas de ASJC Scopus

  • Ecología
  • Botánica
  • Horticultura

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