POLLEN FERTILITY AND INTRASPECIFIC AND INTERSPECIFIC COMPATIBILITY INMANGROVES OF FIJI

Pollen fertility and compatibility status were investigated in three s pecies of mangroves: Bruguiera gymnorhiza, Rhizophora samoensis, R. st ylosa and a hybrid between the two Rhizophora species. Pollen fertilit y was greater than 80% in the three species but less than 10% in the h ybrid. Also, all three species were intraspecifically compatible, whil e the hybrid showed very low compatibility which may be due to its low pollen fertility. The genera Bruguiera and Rhizophora were found to b e completely cross incompatible, while a low reciprocal cross compatib ility was observed in interspecific crosses between Rhizophora stylosa and R. samoensis.