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All Journal JURNAL BIOLOGI PAPUA
Irma Rahayu
Universitas Cenderawasih
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Materials Science & Nanotechnology

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Peran Chitosan sebagai Pemacu Pertumbuhan Kultur Anggrek Dendrobium lasianthera J.J.Sm. secara in vitro Verena Agustini; Irma Rahayu; Leonardo A. Numberi; Ziyadatun Ni’mah
Jurnal Biologi Papua Vol 12, No 1 (2020)
Publisher : Jurusan Biologi FMIPA Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (216.157 KB) | DOI: 10.31957/jbp.1096

Abstract

The effect of chitosan  on micropropagation of Dendrobium lasianthera J.J.Sm was observed. The media used was Vacin and Went (VW) modified with the addition of coconut water and given chitosan with several concentrations. The study was conducted at the Plant Tissue Culture Laboratory of the Department of Biology, Faculty of Mathematics and Natural Sciences, Cenderawasih University for 6 months, from April to September 2019. Experiments using a Completely Randomized Design (CRD) of 8 treatments with 3 explants in each bottle for total 3 bottle as a replication. The total explants used in this experiment was 72 explants. The concentration of chitosan were 0% , 1%, 5%, 10%, 15%, 20%, 40% and 50% separately. Observation data were analyzed using ANOVA, if there were significant differences followed by DMRT at the 5% level. Observation variables included number and length of roots, number and length of leaves. The results showed that giving chitosan 10% had a maximum effect on the number of roots and number of leaves, 6.67 and 4.67. As for the highest leaf length of 17.43 mm  and the longest root length 19.21 mm were in the media with the addition of chitosan concentration of 15%. The observations showed that chitosan  had a positive influence on the growth and development of orchids D. lasianthera plantlet  in vitro.Keywords : Chitosan, orchid, Vacin and Went, plantlet.
Persepsi Publik Terhadap Pengelolaan Lingkungan Hidup di Wilayah Jayapura–Papua Puguh Sujarta; Suharno Suharno; Farmawaty Farmawaty; Leonardo A. Numberi; Irma Rahayu; Marseline G. Mailisa; Irene Suebu; Roma M. Manalu; Wehelmina Lahallo
Jurnal Biologi Papua Vol 13, No 1 (2021)
Publisher : Jurusan Biologi FMIPA Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (365.131 KB) | DOI: 10.31957/jbp.1522

Abstract

Papua has a huge diversity of natural resources which can be categorized as well managed compare to other areas in Indonesia. The city of Jayapura and its surrounding are arranged to become an urban area nowadays. As an impact, many sector has changing including its land use. This research aims to understanding the knowledge, perception, and assesment of people regarding the environment particularly in Jayapura and its environs. The research was conducted in Jayapura City, Jayapura Regency and Keerom Regency with sampling method using survey, questionnaire and documentation. This research revealed that 53.0–90.0% of respondent knowing about environmental management and most of them (90.0%) gained those information from educational institution such as schools. Regarding government participation in environmental management, respondent answered that it is around 69.0–76.0% while for infrastructure and monitoring it is around 52.4-74.0% and 41.0-70.6% respectively. Concerning the environmental condition and its management the rate was 6.20 which can be categoized as good.Key words: people perception; environment; government; Jayapura. 
Co-Authors Farmawaty Farmawaty Irene Suebu Leonardo A. Numberi Marseline G. Mailisa Puguh Sujarta Roma M. Manalu Suharno Suharno Verena Agustini Wehelmina Lahallo Ziyadatun Ni’mah