FENOLOGI PEMBUNGAAN Rhizophora mucronata Lamk. DI HUTAN MANGROVE PASURUAN, JAWA TIMUR

Abstract

Rhizophora mucronata Lamk. is a mangrove species developed for rehabilitation program along the north coast of Java Island. Increasing demand of propagules lead to the importance of gaining information regarding the flowers, fruits and propagules production within the area designated as seed source. Therefore, this research aimed to identify the flowers and propagules of R. mucronata production in the seed source area of Pesisir, Pasuruan, East Java. Flowering and fruiting phenology were observed by taking samples of trees to identify the development of the flowers and the propagules. Propagule production was observed by making a plot of 5 x 5 m, with the distance between plots measuring 100 m. Parameters of diameter, total height, and seed production were carried out on all trees in the plot. The results showed that R. mucronata bloomed throughout the observation period (January-April), with flowering that was not simultaneously in one tree. Reproductive cycle of this species took 15-16 months from bud commencement to propagule maturations; peak of flowering occurs from March to April and propagule production occurs on August. Propagules reach maturity and are ready for harvesting on December-January. Key