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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 22 Documents
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Search results for , issue "Vol 10, No 5 (2011)" : 22 Documents clear
INDUKSI KALUS DAN EMBRIOGENESIS SOMATIK IN VITRO PADA LAMTORO (Leucaena leucocephala) Yusri Sapsuha; Djoko Soetrisno; Kustantinah Kustantinah
BERITA BIOLOGI Vol 10, No 5 (2011)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i5.1921

Abstract

This research is aimed to determine the effect of various concentrations (0, 1, 2, 3, 4 and 5 mg/l) of 2,4-D (dichloropenoxy acetic acid) on callus induction of Lamtoro (Leucaena leucocephala) and its somatic embryogenesis stimulated using different concentrations of 0, 0.5, 1.0, 1.5 and 2.0 mg/l of growth regulators, namely NAA (Naphthaleneacetic acid) and kinetin. Percentage of callus were measured and somatic embryogenesis from callus were subjected to description analysis. The results showed that callus percentage were varied from 29.34% (1 mg 2,4-D/l) at first week (white color and crumb) to 83.67% (4 mg 2,4-D/l) at fourth week (white yellowish color and compact), and embryo somatic varied from 19.33±2.52 (2 mg NAA and 0 mg kinetin/l) to 81.33±11.50 (1.5 mg NAA dan 2.0 mg kinetin/l). It can be concluded that optimum callus induction (83.67%) was recorded when concentration of 2,4-D was given at the rate of 4 mg/l. The largest number of embryos in concentration of 1.5 mg/l NAA and 2.0 mg/l kinetin, and embryo somatic 81.33±11.50.
KLASIFIKASI VEGETASI GUNUNG ENDUT, TAMAN NASIONAL GUNUNG HALIMUN-SALAK, BANTEN EN Sambas; C Kusmana; LB Prasetyo; T Partomihardjo
BERITA BIOLOGI Vol 10, No 5 (2011)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i5.1916

Abstract

The research objective is to classify the variety of vegetation types at Mount Endut, Gunung Halimun-Salak National Park. Vegetation sampling was carried out with systematic sampling with random start. Vegetation type at alliance level was determined with vegetation ordination using factor analysis. Four vegetation alliances can be extracted from the ordination. These alliances are Castanopsis acuminatissima-Schima wallichii/Freycinetia javanica (alliance 1); Castanopsis argentea-Dendrocnide stimulans/Schismatoglottis calyptrata (alliance 2); Coffea canephora var. robusta-Quercus lineata/F. javanica( alliance 3) and Paraserianthes falcataria-Coffea canephora var. robusta/Oplismenus compositus (alliance 4). Vegetation alliances form due to their similarity in structure, composition, and physiognomy of vegetation. There are four vegetation associations at alliance 1, i.e. Castanopsis acuminatissima vegetation association, Schima wallichii vegetation association, Garcinia rostrata vegetation association, and Quercus lineata- Eurya acuminata /Freycinetia javanica vegetation association. Alliance 2 has four vegetation associations i.e.Dendrocnide stimulans vegetation association, Coffea canephora var. robusta vegetation association, Castanopsis argentea -Castanopsis acuminatissima vegetation association, and Schismatoglottis calyptrata-Etlingera coccinea vegetation association.There are seven vegetation associations belonging to alliance 3 i.e. Castanopsis acuminatissima vegetation association, Coffea canephora var. robusta vegetation association, Quercus lineata vegetation association, Garcinia rostrata-Schima wallichii vegetation association, Euodia latifolia - Pternandra azurea/Schismatoglottis calyptrata vegetation association, Raphidophora foraminifera vegetation association, and Freycinetia javanica vegetation association. Alliance 4 has five vegetation associations i.e Paraserianthes falcataria vegetation association, Coffea canephora var. robusta vegetation association, Maesopsis eminii/ Erechtites valerianifolia - Clidemia hirta vegetation association, Oplismenus compositus vegetation association, and Clibadium surinamense vegetation association.

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