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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 2,125 Documents
 91   92   93   94   95 
KEGAGALAN PEMBENTUKAN POLONG DAN BUI PADA BAUHINIA TOMENTOSA L. (FABACEAE) IMAMUDDIN, HARTATI
BERITA BIOLOGI Vol 3, No 7 (1987): (Supplement)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i7.1376

Abstract

H. IMAMUDDIN. 1987.The failure of pods and seeds development of Bauhinia tomentosa L. Suppl. Berita Biologi 3 : 35 - 37.Microscopic,observation to study the failure of pods and seeds development of Bauhinia tomentosa L. was conducted.Several buds,6 - 21 mm long, were diserved with paraffin method.The results showed that the failure of pods and seeds development of B. tomentosa were not caused by either flower morphology, pollen fertility or nticrospore development,but by abnormal development of saccus embrionalis,followed by incomplete development of egg cell,which made the flowers aborted before receptive.
IDENTIFIKASI GEN TERMOASIDOFILIK ALKOHOL 1 DEHIDROGENASE PADA BACILLUS SP-PJV MS, Yulia Atika; Artika, I Made; Nurhidayat, Novik
BERITA BIOLOGI Vol 14, No 1 (2015)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v14i1.1872

Abstract

One of the constrains in the conversion process of biomass to bioethanol is the unoptimum technology for the conversion process.One of the causes is the difference between optimum temperature for enzymatic hydrolytic saccharification and for fermentation.Enzymatic hydrolysis requires high temperature and acidic pH, while fermentation operates at mild condition.Hence, thermophilic fermentative microbes are needed so that simultaneous saccharification and fermentation processes can be carried out.Alcoholdehydrogenase(ADH), an enzyme functions in the final step of fermentation, catalyzes reduction of acetaldehydeto ethanol so that it being one of indicator fermentative microbial.Protium javanicum, a typical fruit from Lombok grow at high temperature and has sour taste so that it predicted has a thermo acidophilic ADH.This study was aimed toidentify gene encoding ADHin Protiumjavanicum(Pjv) microbial isolates.ADH gene identification was carried out by DNA amplification using spesific adh primers inqPCR machine. Results showed that all isolates tested had adh gene and that of Bacillus sp-Pjv was the most efficiently amplified. Results of fermentationtest also showed that the Bacillus sp-Pjv isolate was a better ethanol-producer than the others.
PEMANFAATAN KUSKUS OLEH MASYARAKAT PEDALAMAN IRIAN JAYA Farida, W Rosa; Semiadi, Gono; Wirdateti, Wirdatcti
BERITA BIOLOGI Vol 4, No 5 (1999)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v4i5.1254

Abstract

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PERKEMBANGAN TELUR AMERIANNA CARINATA (H. ADAMS) MARWOTO, RISTIYANTI M.
BERITA BIOLOGI Vol 3, No 4 (1986)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i4.1344

Abstract

RISTIYANTI M. MARWOTO. 1986. The egg development on .Amerianna carinata (H. Adams). Berita Biologi 3(4): 178 - 180. An attempt was made to observe the egg development on 14 of A. carinata snails collected from a pond near the palace at the Bogor Botanical Gardens. It was found that after being incubated for 2-4 days, many of the snails laid 7 capsules, each capsule containing 3 to 27 eggs. The diameter of the capsule was between 4-7 mm, while the egg was about 0,3 mm. The embryos completed their development within 7 days and it was then followed by the egg batched in 1 to 2 days.
DAUR HIDUP JENIS-JENIS CAPLAK INDONESIA:ARGAS(PERICARGAS)ROBERTSI HOOGSTRAAL,KAISER&KOHLS,1968(ACARINA:RGASIDAE) MUNAF, HASAN BASRI
BERITA BIOLOGI Vol 3, No 5 (1986)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i5.1429

Abstract

H B.MUNAF 1986.The life cycle of tinks of Indonesia:Argas(Persigas)robertsi Hoogstraal,Kaiser&Kohls,1986(Acarina Argasidae).Berita Biologi 3(5): 199-202.in the sequence of laboratory works in orde to fulfil the laks of biological data of ticks of Indonesia,the life-cycle of a fowl tick,argas (pericargas) robertsi, was studied. Nymphs and adults were fed on pigeons using capsule system.The completion of the life-cycle required minimum 55 days.Other observable data in this study,such as amount of eggs, percent tages of edysized ticks survivals were given.
KAPASITAS PREDASI TUNGAU MACROCHELES MERDATIUS BERLESE (ACARI: MACROCHELIDAE), PADA TELUR LALAT RUMAH MUSCA DOMESTICA LINNAEUS, DI LABORATORIUM Hartini, Sri; Sigit, Singgih H.; Kadarsan, S.; Koesharto, F.X.
BERITA BIOLOGI Vol 4, No 2&3 (1998)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v4i2&3.1284

Abstract

The capacity of Macrocheles merdarius Berlese to destroy Musca domestica Unnaeus eggs were related to the mite's development stage. Predation abiality of adult femak M. merdarius on fy eggs was 1.8 egg, followed by deutonymphal stage as much as 1.3 eggs and no predation by the protonymphal stage at all.
BIOLOGI PERBUNGAAN TANAMAN AVOKAD (PERSEA AMERICANA MILL.) SUKAMTO, L. AGUS
BERITA BIOLOGI Vol 3, No 1 (1985)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i1.1367

Abstract

L. AGUS SUKAMTO 1985.The flowering biology of avocado (Persea americana Mill.). Berita Biologi 3 (1) 8 - H.- A study on the flowering biology of avocado available at Bogor Botanic Garden was made.The observation was conducted in respects to the opening and closing of the flowers, the versality of the pollen grains which are then related to the fruit production.The climatic condition as well as pollination agents which may affect on the vertilization in avocado are also discussed.
KARAKTERISASI BAKTERI PENGHASIL ASAM INDOL ASETAT DAN PENGARUHNYA TERHADAP VIGOR BENIH PADI Lestari, Puji; Suryadi, Yadi; Susilowati, Dwi Ningsih; Priyatno, Tri Puji; Samudra, I Made
BERITA BIOLOGI Vol 14, No 1 (2015)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v14i1.1859

Abstract

The ability to produce indole acetic acid (IAA) by endophytic bacteria is one of the basic criteria for the use of bacteria as plant growth promoter agent which is essential for the agricultural production.The objectives of this study were to evaluate the ability of 17 bacterial isolates to produce IAA and its effect on improvement of rice seed germination and molecular identification of the selected isolates based on the 16S rRNA gene. The IAA content was determined using Salkowski method measured by spectrophotometer UV-Vis and the effect of endophytic bacteria inoculation on seed germination was done by in vitro assay. Sequences of the selected isolates 16S rRNA amplified by PCR were analyzed the homology against bacterial 16S rRNA database in Genebank. IAA values ranged from 6.632 to 50.053 mg/L with the highest IAA production shown by isolate 6KJ which was followed by 4PB (41.807 mg/L). Bacterial IAA increased rice seed vigor significantly compared to control. However, bacterial inoculation with different concentrations of IAA did not significantly affect the growth of rice plants. Based on the IAA and its effect on seed vigor, 6KJ, 4PB and 2KB were selected for molecular identification. Results showed that the three isolates belonged to Bacillus genus, 6KJ as B. aryabhattai, 4PB belonging to B. cibi and 2KB having 97% homology with B. marisflavi. Further evaluation of the selected endophytic isolates producing IAA is necessary to be carried out to explore their potency as a source of hormone to promote plant growth.
JENIS-JENIS CAPSICUM L. (SOLANACEAE) DI INDONESIA DJARWANINGSIH, T.
BERITA BIOLOGI Vol 3, No 5 (1986)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i5.1335

Abstract

T. DJARWANINGSIH. 1986. The genus Capsicum L. (Solanaceae) in Indonesia. Berita Biologi 3(5) : 225 - 228. Most of the twelve recognized species of the Central and South American genus Capsicum L. (cabai, lombok) are known to be widely distributed from lowland to mountains. The recent introduction of new Capsicum species into Indonesia has opened an opportunity to confirm the identity and to compile a list of the species occuring in this country. Therefore the diagnostic value of flower and fruit numbers,which are commonly used in classifiying this genus, are analyzed to find out their applicability in the tropic. This study was based on all herbarium specimens preserved in Herbarium Bogoriense, and those fresh Capsicum which are cultivated in Bogor and Cibodas Botanical Gardens as well assgmen other locations. The results of this study indicated that corolla and seed colours, flower or fruit position and pubecity are taxonomic characters which can be used in the tropics. Nowadays the genus Capsicum in Indonesia is represented by five species i.e. C. annuum L., C. frutescens L., C. violaceum H.B.K., C. chinense Jacq., and C. pubescens R.&P.
SERANGGA PERUSAK KECIPIR (PSOPHOCARPUS TETRAGONOLOBUS L.) HANNA, ANITA; ADISOEMARTO, S.
BERITA BIOLOGI Vol 2, No 9&10 (1984)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v2i9&10.1417

Abstract

Kecipir kini merupakan tanaman protein yang mulai digalakkan pengembangannya karena kandungan protein yang hampir sama dengan kedelai. Biji kering mengandung 2.9,8 - 37,4% protein, daun 5,7 - 15%, bunga sekitar 5,6% dan polong muda 1,9 - 2,9% (NAS 1975, Citroreksoko 1977). Banyak bagian tanaman kecipir, seperti daun muda, polong dan biji, serta pada beberapa vaiietas juga juga umbinya, dapat dimakan (Burkill 1936).Penggalakan pengembangan budidaya kecipii ini memerlukan perhatian masalah hamanya. Penelitian mengenai hama kecipir telah dilakukan di berbagai negara, di antaranya ialah Papua Niugini, Malaysia dan Filipina (Price 1978). Di Indonesia sendiri penelaahan terhadap hama kecipir masih agak diabaikan. Dari pengumpulan data yang telah dilakukan temyata bahwa kecipir di Indonesia mempunyai pula musuh alami yang berpotensi dan kalau dibiarkan dapat menggagalkan usaha penanamannya (Adisoemarto dkk. 1978). Mengingat permasalahan hama yang timbul perlu dilakukan penelaahan secara kualitatif serangga hama yang berhubungan dengan kecipir.

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