Phenology Study of Aquatic Plants (Sagittaria lancifolia and Echinodorus radicans) in Purwodadi Botanic Garden

Abstract

The Purwodadi Botanic Garden as an ex-situ plant conservation institution have task of conservation, research, education, tourism and environmental services. This research aim is to observe of aquatic plants collection. One of the interesting, distinctive and unique aquatic plants collection species in Purwodadi Botanic Garden are Sagittaria lancifolia and Echinodorus radicans. Both of aquatic species belongs to Alismataceae family, where Indonesia has a high diversity of species from Alismataceae so it needs conservation efforts. Sagittaria lancifolia and Echinodorus radicans are ornamental plants that can be utilized for water purification through phytoremediation techniques. The use of Sagittaria lancifolia and Echinodorus radicans in reducing the toxicity of wastewater are still rarely studied and should be developed. Wastewater treatment system using plants or usually call phytoremediation techniques are easy and environment friendly. Therefore, observation needs to be done as basic research for phytoremediation. This phenological observations were conducted in the garden from January 22, 2018 to February 15, 2018. The results of phenological observations began to show the time of inflorescence, flowers bloom, fruitful time, ripe fruit, and fruitful finish.