INDUKSI DAN REGENERASI KALUS KELADI TIKUS (Typonium flagelliforme. Lodd. ) SECARA IN VITRO

Abstract

<p>ABSTRAK<br />Keladi tikus umumnya diperbanyak secara vegetatif sehingga ragam<br />genetiknya sempit. Penelitian peningkatan keragaman genetik pada keladi<br />tikus melalui kultur in vitro telah dilakukan di Laboratorium Kultur<br />Jaringan, Balai Penelitian Tanaman Obat dan Aromatik (Balittro) Bogor<br />pada bulan April sampai Desember 2005. Bahan tanaman yang digunakan<br />adalah daun steril keladi tikus in vitro. Media dasar yang digunakan adalah<br />Murashige and Skoog (MS) yang diperkaya vitamin dari group B. Sebagai<br />sumber energi digunakan sukrosa sebanyak 30 g/l. Penelitian terdiri dari<br />dua tahap yaitu induksi dan regenerasi kalus. Perlakuan yang diuji pada<br />tahap I adalah beberapa taraf konsentrasi auksin (2,4-D) secara tunggal<br />maupun kombinasi dengan sitokinin (kinetin) terhadap induksi kalus yaitu<br />: 2,4-D 0,1 mg/l; 2,4-D 0,5 mg/l; 2,4-D 1,0 mg/l; 2,4-D 0,1 + kinetin 0,1<br />mg/l; 2,4-D 0,5 mg/l + kinetin 0,1 mg/l; 2,4-D 1.0 mg/l + kinetin 0,1 mg/l;<br />2,4-D 0,1 mg/l + kinetin 0,3 mg/l; 2,4-D 0,5 mg/l +kinetin 0,3 mg/l dan<br />2,4-D 1,0 mg/l + kinetin 0,3 mg/l. Tahap II adalah beberapa taraf<br />konsentrasi benzyl adenin untuk regenerasi kalus. Penelitian disusun<br />menggunakan rancangan acak lengkap dengan pola faktorial dan lima<br />ulangan, dan setiap ulangan terdiri dari satu eksplan. Faktor pertama<br />adalah asal kalus dan faktor kedua adalah beberapa taraf konsentrasi BA<br />yaitu : BA 0,1 mg/l ; BA 0,3 mg/l dan BA 0,5 mg/l. Parameter yang<br />diamati adalah waktu inisiasi kalus, struktur dan warna kalus, jumlah<br />tunas serta penampilan kultur secara visual. Hasil penelitian menunjukkan<br />bahwa kalus asal eksplan daun dapat diinduksi pada perlakuan 2,4-D 1,0<br />mg/l + kinetin 0,1 mg/l dan 2,4-D 1,0 mg/l + kinetin 0,3 mg/l dengan<br />waktu inisiasi 8 sampai 10 minggu setelah perlakuan. Regenerasi kalus<br />terbaik diperoleh pada medium 2,4-D 1,0 mg/l + kinetin 0,3 mg/l<br />mengandung BA 0,3 mg/l dengan rata-rata tunas dan daun yang dihasilkan<br />sebanyak 13,2 tunas dan 4,4 daun.<br />Kata kunci : Keladi tikus, Typonium flagelliforme Lodd., induksi,<br />regenerasi kalus, in vitro</p><p><br />ABSTRACT<br />Induction and regeneration of Rodent tuber calli through<br />in vitro culture<br />Rodent tuber plant (Typonium flagelliforme Lodd) is commonly<br />propagated vegetatively, the repro its genetic variation is narrow. A<br />research to increase the genetic variability of the plant was conducted in<br />Tissue Culture Laboratory of the Indonesian Medicinal and Aromatic<br />Research Institute, Bogor from April to December 2005. The leaf of<br />Rodent tuber in vitro used as an explants. Murashige and Skoog (MS)<br />medium used as basic medium, supplemented with vitamin from B group,<br />sucrose 30 g/l was added into the medium as carbon source. The research<br />consist of two steps : 1) calli induction and 2) calli regeneration. The<br />treatment tested in first step : 2.4-D 0.1 mg/l; 2.4-D 0.5 mg/l; 2.4-D 1,0<br />mg/l; 2.4-D 0.1 + kinetin 0.1 mg/l; 2.4-D 0.5 mg/l + kinetin 0.1 mg/l; 2.4-<br />D 1.0 mg/l + kinetin 0,1 mg/l; 2.4-D 0.1 mg/l + kinetin 0.3 mg/l; 2.4-D 0.5<br />mg/l + kinetin 0.3 mg/l and 2.4-D 1.0 mg/l + kinetin 0.3 mg/l. In the<br />second steps, several concentration of BA were tested i.e: BA 0,1 mg/l ;<br />BA 0,3 mg/l and BA 0,5 mg/l. The experiment was arranged in<br />completely randomized design with factorial pattern. Each treatment<br />consist of five replications. The parameters observed were time of calli<br />initiation, texture, colour of calli and number of shoot and leaves in<br />regeneration. The result showed that calli can be induced on 2.4-D 1.0<br />mg/l + kinetin 0.1 mg/l and 2.4-D 1.0 mg/l + kinetin 0.3 mg/l, eight to ten<br />weeks after culture. The best medium for shoots regeneration contains 2.4-<br />D 1.0 mg/l + kinetin 0.3 mg/l with 0.3 mg/l BA, with mean result of 13.2<br />shoots and 4.4 leaves.<br />Key words : Rodent tuber, Typonium flagelliforme Lodd. bl , induction,<br />regeneration, calli, in vitro</p>

Callus Induction of Cacao Clone Sulawesi 1 on Various Concentrations of 2,4 -D and Coconut Water via in Vitro Culture

“…Coconut water contains a natural ZPT (hormone) that belongs to the cytokines group, namely 1,3 -diphenylurea, zeatin, zeatin glucoside, and zeatin riboside. In addition, coconut water also contains sucrose, fructose and glucose and contains high levels of K and Cl (Kristina and Syahidid, 2012).…”