Muhamad Taher
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Identifikasi Meloidogyne Penyebab Penyakit Umbi Bercabang pada Wortel di Dataran Tinggi Dieng Taher, Muhamad; ., Supramana; Suastika, Gede
Jurnal Fitopatologi Indonesia Vol 8, No 1 (2012)
Publisher : Jurnal Fitopatologi Indonesia

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Abstract

Branched tuber disease is a new problem on carrot cultivation in Indonesia. The disease may reduce the quantity and quality of the tubers and causing significant yield losses. Meloidogyne spp. has been identified as the primary cause of branched or forked disease of carrot in West Java. Similar disease was observed in carrot field in Dieng Plateau, Central Java. The study was conducted at three locations in the Dieng Plateau having different elevation. Nematode species identification was done by observing the perinneal pattern of 150 samples of female nematode and obtained four Meloidogyne species, namely M. arenaria, M. hapla, M. incognita, and M. javanica. All four species were found associated with branched tuber disease in three locations with M. incognita as a dominant species having prevalence levels of 50% to 58%.Key words: branched tuber disease, carrots, Meloidogyne, species identification
Identifikasi Meloidogyne Penyebab Penyakit Umbi Bercabang pada Wortel di Dataran Tinggi Dieng Taher, Muhamad; ., Supramana; Suastika, Gede
Jurnal Fitopatologi Indonesia Vol 8, No 1 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (658.899 KB) | DOI: 10.14692/jfi.8.1.16

Abstract

Branched tuber disease is a new problem on carrot cultivation in Indonesia. The disease may reduce the quantity and quality of the tubers and causing significant yield losses. Meloidogyne spp. has been identified as the primary cause of branched or forked disease of carrot in West Java. Similar disease was observed in carrot field in Dieng Plateau, Central Java. The study was conducted at three locations in the Dieng Plateau having different elevation. Nematode species identification was done by observing the perinneal pattern of 150 samples of female nematode and obtained four Meloidogyne species, namely M. arenaria, M. hapla, M. incognita, and M. javanica. All four species were found associated with branched tuber disease in three locations with M. incognita as a dominant species having prevalence levels of 50% to 58%.Key words: branched tuber disease, carrots, Meloidogyne, species identification
Isolasi dan Identifikasi Jatrophone dari Akar Jarak Merah (Jatropha gossyptfolia) serta Evaluasi Sifat Toksik dan Sitotoksiknya I, SAHIDIN; ARDIANSYAH, ARDIANSYAH; TAHER, MUHAMAD
JURNAL ILMU KEFARMASIAN INDONESIA Vol 8 No 2 (2010): JIFI
Publisher : Fakultas Farmasi Universitas Indonesia

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Abstract

Isolasi dan identifikasi senyawa metabolit sekunder dari akar jarak merah (Jatropha gossypyfolia), serta uji sifat toksik terhadap mikroba dan sitotoksiknya terhadap sel tumor telah dilakukan, Isolasi senyawa dikerjakan dengan menggunakan kromatograti kolom vakum (adsorben: silica gel, eluen: campuran n-heksan, etilasetat, kloroform, dan metanol). Identifikasi struktur dilakukan menggunakan teknik spektroskopi (F TIR, NMR-1 D,13C/DEPT, NMR-2D) dan membandingkan data tersebut dengan data sejenis yang telah dilaporkan. Sifat toksik dievaluasi terhadap bakteri Acetobacter sp., Eschericia coli, Staphylococcus aureus, dan Streptococcus sp., jarnur Aspergilus niger, Penicillium (grey), Penicillium sp. (wliite) dan Rlzizopus sp., serta sitotoksik pada sel murine leukemia P-388. Isolat yang diperoleh berupa kristal berbentuk jarum berwarna putih dan teridentifikasi sebagai jatrophone. Jatrophorie paling kuat menghambat pertumbuhan bakteri Acetobaclcr sp. dengan zona hambat 3,6 cm dan paling aktif terhadap fungi A. niger dengan zona hambat 4,4 cm. Sementara itu, sifat sitotoksiknya terhadap sel murine leukemia P-388 memperlihatkan sifat kurang aktif dengan nilai IC50 > 100 µg/mL.