Pollination syndrome and breeding system of four reforestation tree species in Mt. Makiling, Luzon, Philippines

Abstract

The pollination syndrome and breeding system of four reforestation tree species in Mt. Makiling, Laguna Province in Southern Luzon, Philippines, namely; Acacia auriculiformis Cunn. ex Benth. (auri), Vitex parviflora Juss. (molave), Leucaena leucocephala (Lam.) de Wlt (ipil-ipil, El Salvador Strain) and Pterocarpus indicus Willd.1 (narra) were investigated. Floral buds were enclosed with pollination bags and nets to exclude insect visitors/ pollinators of each species, with a corresponding number of buds tagged and left open to serve as control. The inflorescence of L. leucocephala was enclosed with paper packets to exclude floral visitors and wind-borne pollen grains. Results of the pollination bag experiments suggested that A. auriculiformis, V. parviflora and P. indicus were out crossing and entomophilous. Important pollinators of the species were medium- to large-sized bees. Floral morphology exhibited the bee floral syndrome. leucaena leucocephala is self-compatible and shows floral characteristics for anemophily. The rest of the species studied is self-incompatible and dichogamous.

Source or Periodical Title

Philippine Agricultural Scientist

ISSN

317454

Page

182-190

Document Type

Article

Subject

Breeding system, Floral morphology, Mt. Makiling, Pollination mechanism, Reforestation species

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