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Jurnal Fitopatologi Indonesia

jfiti
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Published by Institut Pertanian Bogor

ISSN : 02157950 EISSN : 23392479 DOI : -

Core Subject : Health,

Medicine & Pharmacology

Jurnal Fitopatologi Indonesia (JFI) is an official publication owned by the Indonesian Phytopathology Society (Perhimpunan Fitopatologi Indonesia). In 2010, JFI management was given to PFI Komda Bogor. Since then, JFI has been published 6 times (January, March, May, July, September, and November).

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Articles 5 Documents

Search results for , issue "Vol. 13 No. 1 (2017)" : 5 Documents clear

Deteksi Odontoglossum ringspot virus pada Anggrek Asli Koleksi Kebun Raya di Indonesia Mahfut, Mahfut; Daryono, Budi Setiadi; Somowiyarjo, Susamto
Jurnal Fitopatologi Indonesia Vol. 13 No. 1 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Native orchid is one of Indonesian natural resources which play important role as parental materials in breeding program. Virus infection is one of the limiting factors in the cultivation of orchid. The purpose of this study was to detect Odontoglossum ringspot virus (ORSV) from native orchid. Symptomatic orchids were collected from 5 botanical gardens, i.e. Bogor, Cibodas, Purwodadi, Balikpapan, and Enrekang Botanical Gardens. Detection and identification was conducted by serological method using ORSV specific antisera, followed by RT-PCR and DNA sequencing. The serological test showed that 5 samples gave positive reaction against ORSV antiserum, i.e. Phalaenopsis amboinensis (KRB2) and Phalaenopsis amabilis (KRB12) from Bogor Botanical Garden, Phalaenopsis amabilis (KRP18) and Dendrobium salacence (KRP20) from Purwodadi Botanical Garden, dan Phalaenopsis modesta J. J. Sm. (KRBp5) from Balikpapan Botanical Garden. RT-PCR of the 5 samples using specific primer of ORSV coat protein gene was successfully amplified fragment DNA with size ± 474 bp. Homology analysis of those 5 ORSV isolates showed the highest index similiarity of 99.8% with corresponding sequences from 14 other ORSV isolates. Phylogenetic analysis indicated that ORSV KRB2 and KRP18 isolates was clustered in a separate group far from ORSV isolates in other countries. This is the first report of ORSV infection on native orchids collection from 5 botanical gardens in Indonesia.

Keragaman Morfologi, Genetika, dan Patogenisitas Colletotrichum acutatum PenyebabAntraknosa Cabai di Jawa dan Sumatera Ibrahim, Roy; Hidayat, Sri Hendrastuti; widodo, widodo
Jurnal Fitopatologi Indonesia Vol. 13 No. 1 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Colletotrichum acutatum is known as the major causal agents of anthracnose disease of chilli pepper in Indonesia. This research was aimed to study genetic variability of C. acutatum in Java and Sumatera based on morphological and molecular characteristics and to evaluate pathogenicity of several isolates. Observation on morphological characteristics involved colour and growth of each colony as well as shape and size of conidia. Molecular identification was performed by DNA amplification using specific primer for C. acutatum, i.e. CaInt2/ITS4 followed by sequencing and nucleotide sequence analysis. Pathogenicity test for each isolate on Capsicum annuum and C. frutescens was conducted in the laboratory using detached chilli. Morphology variability was observed from 40 isolates of C. acutatum. Most of the isolates have white/beige colonies with fusiform conidia of 6.11–9.73 µm in length and 2.24–2.73 µm in width. Pathogenicity of 3 C. acutatum isolates varies from moderate to high based on lesions size on infected chilli. Sequence analysis of 8 C. acutatum isolates indicated high homology among isolates from Java and Sumatera

Mekanisme Pengendalian Penyakit Busuk Batang Jeruk oleh Khamir, Kitosan, Cendawan Mikoriza Arbuskular, dan Bakteri Simbiotiknya Khairani, Hagia Sophia; Sinaga, Meity Suradji; Mutaqin, Kikin Hamzah
Jurnal Fitopatologi Indonesia Vol. 13 No. 1 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Plant diseases become an important constraint on citrus production. Stem rot disease caused by Botryodiplodia theobromae is a major disease on citrus in Indonesia. This study was aimed to evaluate the mechanism of yeast, arbuscular mychorrhiza fungi (AMF), symbiotic bacteria of AMF and chitosan in controlling stem rot disease. In vitro study was performed to evaluate the mechanism of antibiosis, hyperparasitism, production of volatile compounds, and production of chitinase enzyme. The experiment was continued by in planta assays using yeast, AMF, symbiotic bacteria of AMF, and chitosan either singly or in combination. The experiments were performed using completely randomized design with 3 replications. Disease progress were observed based on its latent period, AUDPC, infection rate, AMF association rate, and total phenol content. In vitro studies indicated that the yeasts showed hyperparasitism to B. theobromae with affinity of 26 cells per hyphae, produced volatile compounds with relative resistance level (RRL) 29.1%, and produced chitinase. Selected symbiotic bacteria from AMF showed antibiosis with RRL 42.9%, production of volatile compounds with RRL 26.7%, and has 98% homology with Bacillus subtilis from Vietnam. Application of yeast + AMF + chitosan delayed disease latent period and suppressed disease incidence. Single AMF and combination of yeast + AMF suppressed disease severity, infection rate, and AUDPC. Application of yeast + AMF showed highest association level of AMF and total phenol content. Therefore, the application of AMF and yeast + AMF is recommended in controlling citrus stem rot disease.

Spesies Meloidogyne Penyebab Puru Akar pada Seledri di Pacet, Cianjur, Jawa Barat Kurniawati, Fitrianingrum; Supramana, Supramana; Adnan, Abdul Muin
Jurnal Fitopatologi Indonesia Vol. 13 No. 1 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Root knot nematodes (RKN) Meloidogyne spp. is the primary parasite of celery and reported to cause losses up to 70%. Identification of the Meloidogyne species on celery in Indonesia has not been reported. This study was aimed to identify the species of Meloidogyne on celery based on morphology characters. Samples of Meloidogyne-infected celery plants were taken using purposive sampling method from Ciputri Village, District of Pacet, Cianjur, West Java Province. RKN inside root tissue was detected by acid fuchsin staining method. Meloidogyne species identification was done by morphological observation of female perineal pattern. Disease symptoms found in the field include leaf yellowing, stunted, and uneven growth of celery plants. Roots of infected plants showed the formation of small size root knots, in large numbers and forming strands like a chain. Staining NPA in root tissue was successfully detected various stages of nematode development, i.e. eggs, juveniles and female nematodes. Three Meloidogyne species, namely M. incognita, M. arenaria and M. javanica were identified.

Penyakit Karat Bawang Daun yang Disebabkan oleh Puccinia allii Rud. Widodo, Widodo; Pamungkas, Ginting Tri; Susetyo, Hendry; Setiawan, Antoni; Wowor, Johanis
Jurnal Fitopatologi Indonesia Vol. 13 No. 1 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

New disease of bunching onion (Allium fistulosum) with typical symptoms as rust disease was found in the sub-district of West Tompaso and Modoinding, District of South Minahasa, North Sulawesi in June 2016. Infected plants in the field showed yellowish brown pustules on leaf surface, followed by leaf yellowing and drying out started from the tip. Disease incidence in surveyed area reached 100% with disease severity between 30%–50%. Based on microscopic observation of the fungal morphological characteristic, i.e. uredium dan urediniospora, the causal agent was identified as Puccinia allii Rud.

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