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ABSTRACT
MARNIDA ULI LUBIS : The Growth and Development of Mangrove’s Root
Seedlings Ceriops tagal (Perr.) C.B.Rob under Different Salinity. Supervised by MOHAMMAD BASYUNI and BUDI UTOMO.
The deforestation of mangrove caused by human activities to the effects the composition of mangrove forest stands it is necessary for mangrove rehabilitation to restore mangrove ecosystem. The Growth and root development of mangrove seedlings Ceriops tagal (Perr.) C.B.Rob in different salinity was studied in the greenhouse, Faculty of Agriculture, University of Sumatera Utara, started from 22nd May until 22nd November 2015. This study was aimed at determining the level of seedling growth and root development in C. tagal seedlings in different salinity.
This research use the completely random design (CRD) with 5 treatment, namely 0%, 0,5%, 1,5%, 2%, and 3% for 10 replication. The best result showed that growth and seedlings development was obtained at 0,5% salinity, high growth of seedlings at 0,5%, diameter at 0,5%, number of leaf at 0,5%, leaf area at 0,5%, thick leaves at 0,5%, number of root at 0,5%, length roots at 2%, root diameter at 0,5%, the water content of the root 0%, the water content of the shoot 0,5%, and the ratio of root and shoot at 0,5%.
Keywords : Mangrove, Ceriops tagal, salinity, root
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ABSTRAK
MARNIDA ULI LUBIS : Pertumbuhan Dan Perkembangan Akar Semai
Mangrove Sejati Ceriops tagal (Perr.) C.B.Rob Pada Berbagai Salinitas. Dibimbing oleh MOHAMMAD BASYUNI dan BUDI UTOMO.
Kerusakan hutan mangrove yang disebabkan oleh aktivitas manusia mengakibatkan komposisi tegakan hutan mangrove menjadi menurun sehingga di perlukan kegiatan rehabilitasi hutan mangrove untuk memperbaiki ekosistem hutan mangrove. Penelitian Pertumbuhan dan perkembangan akar semai mangrove sejati Ceriops tagal (Perr.) C.B.Rob pada berbagai salinitas ini diteliti di rumah kaca, Fakultas Pertanian, Universitas Sumatera Utara mulai 22 Mei sampai 22 November 2015. Penelitian ini berjutuan untuk mengetahui tingkat pertumbuhan semai dan perkembangan akar C. tagal tehadap berbagai konsentrasi salinitas.
Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) non-faktorial dengan 5 perlakuan, yaitu salinitas (0%, 0,5%, 1%, 2%, dan 3%) dan di ulang sebanyak 10 ulangan. Hasil pertumbuhan dan pekembangan terbaik yaitu pada konsentrasi salinitas 0,5%, pertumbuhan tinggi semai pada konsentasi salinitas 0,5%, diameter semai 0,5%, jumlah daun 0,5%, luas daun 0,5%, tebal daun 0,5%, jumlah akar 0,5%, panjang akar 2%, diameter akar 0,5%, kadar air akar 0%, kadar air tajuk 0,5%, dan ratio akar dan tajuk 0,5%.
Kata kunci : Mangrove, Ceriops tagal (Perr.) C.B.Rob, salinitas, akar
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