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Induksi fusi protoplas pada anggrek (Phalaenopsis 144 X Dendrobium 788) dengan stimulus medan listrik
No full textPengaruh Ekstrak Yeast dan Pisang Raja Terhadap Pertumbuhan Tunas Embrio Vanda hookeriana Rchb.f.
Get PDFAbstrakVanda hookeriana Rchb.f. merupakan anggrek yang dilindungi dan keberlangsungan hidupnya di alam terancam punah, sehingga perbanyakan anggrek secara in vitro sangat diperlukan. Penelitian ini bertujuan untuk mengetahui pengaruh ekstrak yeast dan pisang raja terhadap pertumbuhan tunas embrio anggrek V. hookeriana Rchb.f. Desain penelitian ini menggunakan RAL faktorial, faktor pertama adalah ekstrak yeast dengan 3 taraf: 0,5 g/L, 1 g/L, dan 1,5 g/L, faktor kedua adalah buah pisang raja dengan 3 taraf: 50 g/L, 100 g/L, dan 150 g/L. Penelitian dilakukan menggunakan teknik kultur jaringan, pengamatan dilakukan setiap bulan sekali dengan mengamati aspek morfologi plantlet. Media yang digunakan adalah Vacin-Went (VW) + kombinasi ekstrak yeast dan pisang raja. Parameter pengamatan berupa tinggi tunas, berat kering tunas, jumlah daun, diameter daun, panjang daun, berat kering daun, jumlah akar, diameter akar, panjang akar, berat kering akar, dan morfologi tunas. Hasil analisis menunjukkan bahwa perlakuan pisang raja 150 g/L + ekstrak yeast 0,5 g/L merupakan konsentrasi yang paling berperan terhadap parameter pertumbuhan anggrek V. hookeriana Rchb.f. Penelitian ini berhasil membuktikan bahwa penambahan komponen organik dalam media kultur jaringan memberikan respon pertumbuhan dan perkembangan yang baik pada eksplan. Komponen organik membantu proses fisiologis eksplan, karena komponen organik mengandung senyawa potensial yang dibutuhkan selama proses pertumbuhan dan perkembangan. Abstract Vanda hookeriana Rchb.f. is one of protected orchid and its survival in the wild was threatened by extinction, so orchid propagation was needed. This research aimed to determine the effect of yeast and pisang raja extracts to embryonal shoot growth of Vanda hookeriana Rchb.f. Experimental design used factorial RAL, first factor was yeast extract with 3 treatments (0.5 g/L; 1 g/L; & 1.5 g/L). Second factor was pisang raja with 3 treatments (50 g/L; 100 g/L; & 150 g/L). The research was conducted using in vitro culture techniques, observations were made once a month by observing the plantlet morphological parameters. The medium used was Vacin-Went (VW) + combination of yeast and pisang raja extracts. Observation parameters were shoot height, shoot dry weight, leaf number, leaf diameter, leaf length, leaf dry weight, number of roots, root diameter, root length, root dry weight and shoot morphology. The analysis showed that pisang raja treatment 150 g/L + yeast extract 0.5 g/L was the best concentration for the growth parameters of Vanda hookeriana Rchbf. This research were succeeded in proving that the addition of organic components in tissue culture media gave better response to growth and development of the explants. Organic components helps the explants in physiological ways because of the organic components contain potential compounds needed during the growth and development process
Induksi Regenerasi Phalaenopsis amabilis (L.) Bl pada Berbagai Dosis Zat Pengatur Tumbuh
Get PDFABSTRACT
The research was aimed to study the effect of plant growth regulator 2iP, NAA and its combination to regeneration of P. amabilis. Internodes and nodes segments from pedicellus
were cultured in New Phalaenopsis (NP) media supplemented either with 2iP or NAA and its combination with concentrations of 0.0:0.0; 0.0:2.5; 0.5:2.0; 1.0:1.5; 1.5:1.0; 2.0:0.5, and 2.5:0.0 mg L-1 respectively. Eksplans were sub-cultured in the same medium once four weeks during twelve weeks. Callus initiation time was observed once a day. Shoot initiation time from internodes and nodes were observed once a week. The number of shoot and root were
calculated twelve weeks after inoculation. The results showed that bud regeneration from internodes was indirectly due to callus phase, while bud and root regeneration from nodes were directly without callus phase. The combination between 2iP and NAA had higher effect on regeneration than single or without plant growth regulator. Nodes of explants produced more shoots and roots than internodes of explants
Callus induction and secondary metabolite profile from Elephantopus scaber L.
Get PDFElephantopus scaber L. is a plant that has potential as traditional medicine. Callus induction and production of secondary metabolite content can be increased by culture callus using plant growth regulators. This study was purposed to investigate the effect of IBA and kinetin concentration on the induction and secondary metabolite profile of callus from E. scaber L. leaves. Leaves explant of E. scaber L. were cultured on MS medium with various combination concentrations of IBA and kinetin for 6 weeks and then callus was extracted using methanol. Secondary metabolite content from the resulting extract was analyzed using the phytochemical screening method. The result showed that the treatment of IBA 2.0 mg/L and kinetin 1.0 mg/L and treatment of IBA 2.0 mg/L and kinetin 2.5 mg/L are the fastest combination concentration to induce callus at 5.33 ± 0.577 days. Treatment of IBA 2.0 mg/L and kinetin 2.5 mg/L produced callus with the highest fresh weight and dry weight at 0.7016 ± 0.0588 grams and 0.0766 ± 0.0062 grams, respectively. The morphology of calluses grown during this study was compact with various colors appearance, such as light green, brownish green, and brown. Secondary metabolite content of methanol extract of callus E. scaber L. are flavonoids, alkaloids, terpenoids, and saponins
PELATIHAN BUDIDAYA ANGGREK SECARA IN VITRO PADA KELOMPOK TANI ANGGREK “SANDERIANA”
Get PDFIndonesia sebagai negara megabiodiversitas mempunyai jenis-jenis anggrek yang melimpah. Pengambilan langsung dari alam membuat banyak jenis anggrek yang masuk dalam daftar CITES (Convention On International Trade In Endangered Species Of Wild Fauna and Flora), Apendiks 1. Salah satu upaya pelestarian anggrek adalah perbanyakan melalui metode kultur jaringan. Departemen Biologi, Fakultas Sains dan Teknologi Universitas Airlangga telah melakukan banyak penelitian tentang budidaya anggrek dengan kultur jaringan. Untuk menyebarluaskan hasil penelitian tersebut agar bermanfaat untuk masyarakat luas, telah dilakukan kegiatan pengabdian masyarakat berupa pelatihan budidaya anggrek untuk kelompok tani anggrek “Sanderiana” di Dadaprejo, Junrejo, Batu, Jawa timur yang berkerjasama dengan DD Orchid dan Taman Husada Graha Famili. Pelatihan difokuskan di Malang karena Malang merupakan sentra kegiatan pertanian anggrek nasional. Pelatihan budidaya nggrek juga difokuskan pada teknik kultur jaringan anggrek untuk anggrek langka sebagai upaya pelestarian dan juga untuk meningkatkan perekonomian petani anggrek. Kegiatan pelatihan dilakukan selama 6 bulan, meliputi tahap persiapan, pelatihan dan workshop, evaluasi 1 dan evalusi 2. Teknik budidaya yang dilakukan adalah budidaya kloning anggrek secara in vitro
SEED GERMINATION OF Avicennia marina (Forsk.) Vierh. BY PERICARP REMOVAL TREATMENT
Get PDFAvicennia marina is one species used for building coastal ecosystem stabilization in Surabaya shores because of its
tolerance to high salinity level and resistance to wave energy. Their existence is threatened by various factors i.e. land conversion, pollution and interisland bridge existence. Growth of A. marina is currently limited by seed dormancy. In an effort to increase propagation efficiency, seed viability and vigor were compared based on collection dates and pericarp removal methods. The results showed no relationship between salinity levels of soaking water or seed buoyancy and seed viability or seed vigor. Collection dates may influence seed viability and vigor. Seeds collected in October and November germinated more quickly than those collected in December, although there were no
differences in total germination. Hand-peeled seeds germinated more slowly than soaked seeds for all collections, but with no differences in total germination. Seeds collected in October and November grew more vigorously than those collected in December
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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