Ali, Ibrahim AbdallaKairu, Eunice WAbubakar, Zakia MMchenga, Islam S.S2023-07-142023-07-142016Ali, A. I., Kairu, E. W., Abubakar, Z. M., & Mchenga, I. S. (2016). Pollination and Reproductive Relationship of Four Mangroves Species in Zanzibar, Tanzania. Journal of Global Biosciences, 5(1), 3572-3584.2320-1355http://ir-library.ku.ac.ke/handle/123456789/26227ArticleRelationship between flowers and fruits can occur as a result of several factors; including temperature, soil, rainfall, light intensity, plant resources, and genetic structure. This study was designed to investigate effect of pollination on buds, flowers, fruit sets and fruits of four mangroves species namely Rhizophora mucronata, Bruguiera gymnorhiza, Ceriops tagal and Avicennia marina. A branch free from pest and diseases have been randomly selected and observations were carried out twice a week in 9 months (July 2013 to March 2014). Results showed that, there were significant differences in the number of buds, flowers, fruit set, visitors, visits and fruits in all four mangrove species. There were variations of relationships among reproduction variables. A strong relationship was observed between buds and flowers in all species. Increase number of flowers concurrently increases number of fruit set in all species, although A. marina shown a weak relationship. We concluded that the increases number of mangroves fruits not only depends on number of fruit set and other reproduction variables, but also there was other abiotic and biotic factors required intensive investigation.enBudFlowerFruitPollinationVisitorsVisitsArticle