ISHS Acta Horticulturae 360: I International Symposium on Ornamental Palms
FLORAL BIOLOGY AND REPRODUCTIVE SYSTEM OF EUTERPE ESPIRITOSANTENSIS FERNANDES |
| Authors: | M.L.A. Bovi, M.R. do Val, G. da S. Dias, S.H. Spiering |
| Keywords: | Arecaceae, visiting insects, plant morphology |
| Abstract:
Systematic observations were made over five consecutive years in populations of Euterpe espiritosantensis cultivated in the experimental stations of the Instituto Agronômico located in Ubatuba, Pariqueraçu and Campinas, State of São Paulo, Brazil. The objective was to study the floral biology and the main reproductive system of this species to support to the breeding program of species that produce palm hearts. The results indicate that the species is monoecious, dichogamous and protandric. The main reproductive system appears to be xenogamic but the occurrence of geitonogamy is common, without self-incompatibility mechanisms to avoid it. There is no form of incompatibility in this species, either at the individual or population level. Natural interspecific hybridization did not occur in the conditions of the study due to lack of synchronization in flowering of the main species of Euterpe. Nevertheless, controlled interspecific hybrids are easily obtained using stored pollen. Entomophily and anemophily seem to be more effective pollination syndromes, although the importance of gravity, specially for the occurrence of geitonogamy is evident. Hymenoptera and diptera are the main visiting insects and probably are the pollinators of the species. | |
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