R. Irawanto, 2011, PROPORTION OF PHENOLOGY OF ARECACEAE AT PURWODADI BOTANICAL GARDEN, disampaikan dalam Seminar Internasional “International Seminar on Natural Resources, Climate Change, and Food Security in Developing Countries (ISNAR-C2FS)” Agriculture Faculty – UPN Jawa Timur (27-28 Juni 2011).
Abstract Purwodadi Botanical Garden as a plants conservation ex-situ an institution in Indonesia, has a duty to conserve, especially in the dry lowland plant, potentially valuable and science. One of the interesting collection and has various functions in human life is a Arecaceae (palm) with high species diversity in Indonesia. Type Arecaceae widely used as building materials, household appliances, handicrafts, food source, oil sources, bioenergy, medicinal plants, ornamental plants and plant conservation. Based on the data Registasi collection Arecaceae planting from 1955 to present. The existence of global climate change at the end of this decade, directly or indirectly affect the plant which can be seen in phenology. Phenology is the study of the change / adaptation of plants to their environment. This study aimed to compare the phenology in the Purwodadi Botanical Garden collection Arecaceae in early planted with current conditions. Descriptive research method based on flowering phenology data Arecaceae collection from the registration (year 1991) compared with current observations (year 2010). Arecaceae observations in 2010 is 88 species, the year 1982-1991 was 47 species and in 1987 was 36 species. So the comparison phenology for 23 species, such as Areca cathecu, Arenga obtusifolia, Bactris major, Bentickia nicobarica, Calamus unifarius, Caryota cumingii, Caryota mitis, Cocos nucifera, Livistona saribus, Nephrosperma vanhoutteanum, Oncosperma tigillarium, Orbignya cohune, Ptychosperma ambiguum, Ptychosperma hospitum, Ptychosperma macarthurii, Ptychosperma propinquum, Roystona elata, Sabal guatemalensis, Sabal mauritiiformis, Sabal minor, Sabal palmetto, Scheelea insignis, dan Veitchia merrilli. Key Word: Phenology, Arecaceae, Purwodadi Botanical Garden.
