Artículos de revistas
Flower structure and reproductive biology of Bougainvillea stipitata (Nyctaginaceae)
Fecha
2002-12Registro en:
López, Hernán; Galetto, Leonardo; Flower structure and reproductive biology of Bougainvillea stipitata (Nyctaginaceae); Wiley Blackwell Publishing, Inc; Plant Biology; 4; 4; 12-2002; 508-514
1435-8603
1438-8677
CONICET Digital
CONICET
Autor
López, Hernán
Galetto, Leonardo
Resumen
Bougainvillea stipitata displays inflorescences with three pendant greenish flowers, Flowers open at sunset and last five days, Flower perianth is constricted in the middle and forms a tube that ends in five lobes. Fragrance is emitted by the papillae located on the lobe margins of the perianth. The nectary is located at the base of the staminal tube. It secretes fructose-dominant nectar with amino acids, phenols and reduced acids. Nectar secretion is continuous during flower lifetime and the flowers do not recover the reward. Mainly moths visit flowers. Pollen load on stigmas indicates that most flowers received more than 50 pollen grains, which are deposited by pollinators within the first two days of the flower life. Although the low natural fruit set of this self-incompatible species may be due to intraplant pollen flow, pollinators play an essential role for B. stipitata fruit production.