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BIOTROPIA - The Southeast Asian Journal of Tropical Biology
Published by Southeast Asian Regional Centre for Tropical Biology
ISSN : 02156334     EISSN : 1907770X     DOI : http://dx.doi.org/10.11598/btb
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary
BIOTROPIA, The Southeast Asian Journal of Tropical Biology, is a scientific publication of the Southeast Asian Ministers of Education Organization (SEAMEO) – Southeast Asian Regional Center for Tropical Biology (BIOTROP). It publishes articles in the broad areas of tropical ecosystems and environmental impacts, biodiversity conservation and sustainable development and biotechnology.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "No. 9 (1996)" : 5 Documents clear
NATURAL PRODUCTS IN ORGANIC SYNTHESIS H. BURNELL, ROBERT
BIOTROPIA No. 9 (1996)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (578.989 KB) | DOI: 10.11598/btb.1996.0.9.127

Abstract

A resume of four lectures presented by the author during a one month visit to BIOTROP in 1995. The seminars were held at the University of Indonesia at Depok, the Technical Institute in Bandung, the Bogor Agricultural Institute and at BIOTROP, Bogor. The talks were grouped under the general title "The Use of Natural Products in Organic Synthesis". Key words: Organic compounds/Natural products.
GROWTH INHIBITION OF PATHOGENIC ROOT FUNGI BY EXTRACTS OF ECTOMYCORRHIZAL FUNGI OR Picea glehnii INOCULATED WITH ECTOMYCORRHIZAL FUNGI* MEGUMI KASUYA, MARIA CATARINA
BIOTROPIA No. 9 (1996)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (288.334 KB) | DOI: 10.11598/btb.1996.0.9.125

Abstract

This work sought to verify the presence of compounds with antimicrobial properties in extracts of ectomycorrhizal fungi or in Picea glehnii inoculated with ectomycorrhizal fungi. Extracts from Pisolithus tinctorius, Scleroderma flavidum, Amanita pantherina and Paxillus sp., grown in liquid culture media, and from P. glehnii seedlings inoculated or not with the above ectomycorrhizal fungi and cultivated in in vitro condition, were processed to obtain two fractions, water and ethyl acetate solubles. These fractions were tested for the presence of inhibitory constituents against Fusarium roseum, Pythium sp. and Rhizoctonia solani. Direct bioautography technique on TLC or paper disc technique was used, depending on the extract and pathogenic fungi tested. The results showed the production on inhibitory components, not only by ectomycorrhizal fungi, but also by P. glehnii inoculated or not with ectomycorrhizal fungi. The sensitivity varied considerably according to the type of fungus or extract. Key words: Japan/Mycorrhizas/Inh|bition/Extracts/Antimicrobial compounds/Amanita pantherina/Pisolithustinctorius/Paxillvs spJScleroderma flavidum/Fusarium roseum/Pythium spJRhizoctonia solani.  
BROWN SPOT CAUSED BY CURVULARIA SPP., A NEW DISEASE OF ASPARAGUS B. SALLEH, B. SALLEH; SAFINAT, A.; JULIA, L.; TEO, C.H.
BIOTROPIA No. 9 (1996)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.1996.0.9.123

Abstract

The distribution, aetiology and symptomatology of a new disease on asparagus ferns, which we have termed brown spot, is described. Descriptions of and a key to identification of the causal organisms, Curvularia brachyspora, C. eragrostidis, C. lunata and C. pallescens, are also presented. Pathogenicity tests showed that C. lunata was the dominant and most virulent of the four species. Inoculation with conidial suspensions or mycelial transfers through wounded ferns were more effective in inducing the disease than inoculations on unwounded ferns. This is the first record of C. brachyspora in Malaysia and the first report of this disease on asparagus Key words: Malaysia/Plant diseases/Brown spotJCurvularia brachyspora/Curvularia eragrostidts/Curvularialunata/Curvularia pallescens/Asparagus.
THE GENUS MIMOSA WITH SPECIAL REFERENCE TOM. QUADRIVALVIS L. VAR. LEPTOCARPA (D.C.) EARNEDY, A NEW SPECIES RECORD FOR THE WEED FLORA IN MALAYSIA*) HAJI MOHAMED, M. A; BAKI,, BAKI; BAKAR, B.; WATI, H. NOORMA
BIOTROPIA No. 9 (1996)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.1996.0.9.124

Abstract

An exploratory floristic survey of the genus Mimosa was conducted in 1993 to ascertain species diversity and their spatial patterns of distribution in Peninsular Malaysia. A new species record of uncertain indigene, M.. quadrivalvis was recorded for the first time in restricted localities along the roadsides in Pekan Darat and Bertam, Seberang Perai, Gurun and Bedong in Kedah in addition to widely distributed and seemingly ubiquitous presence of M. invisa Mart. ex. Colla and M. pudica L. The latter two species were mostly found in open, disturbed and derelict habitats, agricultural areas and ex-mining lands. Both species exhibited largely contagious and overdispersed distribution patterns with positive peaks in pattern intensity values although regularity or underdispersed distribution patterns do manifest in certain localities. The giant mimosa, M. pigra inhabited in clustered thickets, large pockets of lands in the urban and sub-urban localities in the states of Penang, Perak, Kelantan, Kuala Lumpur and Negeri Sembilan. In other states, M. pigra was confined to a few localities in smaller patches. Except for M. quadrivalvis, the other species of Mimosa are serious weeds in the agricultural, recreational and residential and derelict areas. A key to the Mimosa species is constructed along with brief descriptions on their morphology and ecology. Key words: Malaysia/Weed ecology/Mimosa invisa/Mimosa pigra/Mimosa pudica/Mimosa quadrivalvis/ Weeddistribution/Weed anatomy and morphology.
FUNGI ISOLATED FROM GROUNDNUTS IN SOME LOCATIONS OF WEST JAVA S.DHARMAPUTRA, O
BIOTROPIA No. 9 (1996)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.1996.0.9.126

Abstract

One hundred and ninety eight groundnut samples were collected from freshly harvested groundnuts (FHG), farmer storage systems (FSS), middlemen warehouses (MW), wholesalers (WS) and retailer sample (RS) during the dry and wet seasons from Cidolog, Cianjur, Sukabumi and Bogor, West Java, Indonesia, in 1990/1991. The moisture content (m.c.), intactness of kernels, and the percentages of groundnut kernels infected by each species of fungi were analyzed. In genera), the m.c. of the samples collected during the dry season was lower than of those collected during the wet season. Also, the m.c. of samples collected from FHG, FSS and MW was higher than of those collected from WS and RS. The m.c. of samples collected from FHG was the highest (12.5-45.75%), but the percentages of damaged kernels were the lowest (2.5-13.8%), because the samples were shelled manually. A total of 25 species of fungi were isolated from samples collected from the 4 localities. They were Acremonium strictum, Aspergillus candidus, A. flavus, A. niger, A. ochraceus, A. tamarii, A. wentii, Botryodiplodia theobromae, Cladosporium cladosporioides, C. sphaerospermum, Eumtium chevalieri, E. repens, E. rubrum, Fusarium equiseti, F. longipes, F. oxysporum, F. semitectum, Mucor sp., Papulaspora sp., Pestalotia sp., Penicillium aethiopicum, P. citrinum, Rhizapus sp., R. stolonifer and Syncephalastrum sp. The predominant fungi in samples collected from Cidolog and Sukabumi during the dry season were Aspergillus wentii, while those collected from Cianjur and Bogor were A. niger. The percentages of kernels infected by A. wentii in samples collected from Cidolog and Sukabumi were between 30-100% and 36-100%, respectively, while those of kernels infected by A. nigerin samples collected from Cianjur and Bogor were between 34-93% and 14-98%, respectively. The predominant fungi in samples collected from each location during the wet season were A. flavus. The percentage of kernels infected by the fungus in samples collected from Bogor was the highest (83-100%). Key words: Indonesia/West Java/Stored product pests/Groundnut/Fungi/Acremonium strictum/Aspergillussp./Botryodiplodia theobromae/Cladosporium sp./Eurotium sp./Fusarium sp./Mucor sp./Papulasporasp./Pestalotia sp./SPenicillum sp/Rhizopus sp./Syncephalastrum sp./Moisture content.

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