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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 24 Documents
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Search results for , issue "Vol 13, No 1 (2014)" : 24 Documents clear
PERTUMBUHAN POPULASI Daphnia sp. PADA MEDIA BUDIDAYA DENGAN PENAMBAHAN AIR BUANGAN BUDIDAYA IKAN LELE DUMBO (CLARIAS GARIEPINUS BURCHELL, 1822) Jadmiko Darmawan
BERITA BIOLOGI Vol 13, No 1 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i1.654

Abstract

The accumulation of organic compound from waste feed and feces from intensive catfish culture can give negative impact to the water quality. On the other hand, the need of live feed for freshwater fish larvae are not sufficient. The aim of this research was to study the effectivity of intensively catfish culture wastewater as a media for Daphnia sp. culture. The experimental research design was completely randomized with five treatments, i.e: Using 5 g/l of chicken manure in the media culture of Daphnia as a control while treatments B, C, and D were using wastewater of intensively catfish culture. The concentration of wastewater of intensively catfish culture was 25%, 50%, 75%,and each treatment was replicated four times. Broodstock of Daphnia sp. used at least 1mm diameter with stocking density 20 ind / liter. Data on population growth of Daphnia sp. obtained were processed using analysis of variance with confidence interval of 95%, followed by least significant difference test (LSD). Furthermore, water quality parameters and density of plankton was examined as supporting data. The water quality data was observed every 4 days and plankton density observation was conducted at the beginning and the end of the study. The result of this research showed that the wastewater of an intensive catfish culture could be used as an alternative media for Daphnia sp. culture. Based on the analysis showed that the different media of Daphnia sp. culture significantly influenced to the population growth of Daphnia sp. The most effective media for Daphnia sp. culture in this research was treatment C and D i.e. 75 % and 100% of waste water of intensive catfish culture.
VALIDASI, DISTRIBUSI DAN PEMANFAATAN ACANTHACEAE DI JAWA Deden Girmansyah
BERITA BIOLOGI Vol 13, No 1 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i1.659

Abstract

Acanthaceae published in Flora of Java has had significant change especially for nomenclature, distribution and potential uses; thus it affected species names of collections of Acanthaceae in Herbarium Bogoriense of The Indonesian Institute of Sciences. It is therefore necessary to update information of Acanthaceae by conducting herbarium and field surveys as well as reviewing related publications. Validation of the species name, synonymous and distribution were carried out by using some online websites such as IPNI, Tropicos and The plantlist. Meanwhile, the potential uses were obtained from several publications. Examinations on herbarium specimens was conducted in the Herbarium Bogoriense, while field survey was carried out in several locations in Java. This study recorded a total of 164 species of Achantaceeae to which 53 were native in Java (Indonesia), 24 species become synonymous, and five other species have not been published. Some of them have potential chemical substances and uses.
PARAMETER GENETIK SEJUMLAH GENOTIP PADI DI LAHAN SAWAH BERPENGAIRAN TEKNIS DAN TADAH HUJAN Bambang Sutaryo
BERITA BIOLOGI Vol 13, No 1 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i1.650

Abstract

Development of high-yielding varieties depends on choice of parents, include per se performance, morphological and agronomic traits, and genetic diversity as determined through geographic origin. Indicators of success can be expected from the value of genetic progress and some other important genetic parameters. The purpose of this study was to calculate the genetic heterogenity, heritability and genetic advances of some quantitative characters of rice genotypes. Experiments were conducted in the district of Kulon Progo, namely: Wates and Panjatan (irrigated condition, dry season of 2012), in Giripeni (rainfed, medium altitude, wet season of 2012/2013), Samigaluh and Kalibawang (rainfed, high altitude, wet season of 2012/2013). Each experiment was designed using a randomized complete block with three replications.Data indicated that not all environmental conditions appropriate for the selection and development of genotype due to low value heritability and expectation genetic advances of each environment was lower than the value heritability and expectation genetic advances for the combined average of the environment. Wates was suitable location for grain yield selection and development in terms of the high heritability values. Kalibawang, Giripeni and Wates have considerable heritabilty value for 1000 grain weight character, hence they can be used as suitable selection locations for these characters.
PENGARUH LAMA PENYIMPANAN TERHADAP PERKECAMBAHAN BIJI Stachytarpheta jamaicensis (L.) Vahl. Solikin Solikin
BERITA BIOLOGI Vol 13, No 1 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i1.655

Abstract

Stachytarpheta jamaicensis (L.) Vahl. belongs to family Verbenaceae which has potential as medicinal and ornamental plant. Research on determination of the effect of storage duration on seed germination of Stachytarpheta jamaicensis (L.) Vahl. was conducted in the glass house of Purwodadi Botanic Garden from July 2012 - July 2013. Experiment used a completely randomized design with treatments storage duration namely: S0 = no stored ; S1 = stored for 2 months ; S2 = stored for 5 months ; S3 = stored for 8 months and S4 = stored for 12 months. The treatments was replicated 5 times with 100 seeds for each replication. The seeds were sowed on river sand medium sifted with 2 mm sieve mess at about 0.5 cm deep, in polybags ( 15x10 cm ). The polybags were placed in a plastic box 38 x 28 x 13 cm and covered by transparent plastic and black paranet. Variables measured were germination percentage and daily germination rate. The results showed that the seed storage duration had significantly affected seed germination rate of Stachytarpheta jamaicensis (L.) Vahl.. The highest seed germination (96.8 %) was recorded for the treatment of eight months storage duration (S3). Whereas the fastest germination rate (5.53 days) was observed on the treatment of two months storage period.

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