Notes on the floral biology and pollination syndrome of Echinopsis chiloensis (Colla) Friedrich & GDRowley (Cactaceae) in a population of semiarid Chile

作者：Ossa Carmen G^*; Medel Rodrigo

来源：Gayana - Botanica, 2011, 68(2): 213-219.

DOI：10.4067/S0717-66432011000200012

• Flower longevity
• nectar production
• pollination syndrome
• flower adaptation

We report some aspects of the floral biology of Echinopsis chiloensis ssp. chiloensis in a population near to the northern limit of its distribution. Anthesis is strictly diurnal and flowers remain open during 492 min on the average. Echinopsis chiloensis is self-incompatible. Flower longevity, nectar production along day, and floral visitors indicate that this population fits well to a diurnal insect pollination syndrome. These results contrast with a previous report indicating nocturnal anthesis and mixed mellitophylous-sphingophylous pollination syndrome in populations near to the southern limit of the distribution range. We suggest that the pollination syndrome of E. chiloensis is a labile rather than fixed condition that may depend on the abiotic characteristics and geographical location of the population under assessment.

• 出版日期2011