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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 11 No 5 (2015)" : 5 Documents clear

Meloidogyne incognita Penyebab Umbi Berbintil pada Kentang di Beberapa Sentra Produksi Kentang di Jawa Aprilyani Aprilyani; Supramana Supramana; Gede Suastika
Jurnal Fitopatologi Indonesia Vol 11 No 5 (2015)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Root knot nematodes is an important pathogen on potatoes in tropical and sub-tropical areas. Root knot nematodes contribute a significant impact in reducing the quality and quantity of potato tuber. Meloidogyne incognita is one of the species causing the root knot. This research was conducted to identify M. incognita on potatoes in Java Island based on morphological and DNA molecular characteristic. The infected potato tubers with pimple-like knot symptom were collected from Pangalengan (West Java), Banjarnegara (Central Java), and Kota Batu (East Java). Nematode was identified based on morphological character of perineal pattern, and based on molecular DNA character by polymerase chain reaction technique using a pair of specific primer (MI-F and MI-R), followed by DNA fragment sequencing and phylogenetic analysis. Based on morphological character of perineal pattern, M. incognita was detected in all 3 locations; while based on DNA molecular character, and M. incognita was detected in Pangalengan (West Java) and Kota Batu (East Java). M. incognita from Pangalengan had high homology, i.e.99.2% to 99.8% with those isolates from China, India, and Malaysia.

Ketahanan Lapangan Lima Genotipe Padi terhadap Penyakit Hawar Daun Bakteri Rezki Heru Aditya; Wiwiek Sri Wahyuni; Paniman Ashna Mihardjo
Jurnal Fitopatologi Indonesia Vol 11 No 5 (2015)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Bacterial leaf blight disease caused by Xanthomonas oryzae pv. oryzae is an important disease on rice in Indonesia. Four rice varieties, i.e. Inpari 30, Situbagendit, Luk-ulo and Cibogo has been known to have resistance to the disease. Therefore, they can be used as indicator plants to measure the resistance of any new rice genotypes to the disease. Research was aimed to evaluate field resistance of a new rice line, i.e. line X, with 4 resistant rice varieties as check control. The research was conducted in the field in Wirolegi villages, Sumbersari-Jember with natural infection of X. oryzae. Plant resistance was observed by measuring disease incidence (DI) and severity (DS). The highest DI (100%) was reached by all genotypes in different age. At 90 days after planting, DS of line X reached 11.85% which is far low compared to DS of var Situbagendit (40.25%). Based on DI and DS, line X is considered to have the best resistance to the disease, i.e. resistant in vegetative phase and moderately resistant in generative phase. However, the strain of X. oryzae infecting the plants in the field was unknown.

Risiko Introduksi Gandum ke Timor Tengah Utara: Penyakit Hawar Daun dan Busuk Batang Aloysius Rusae; Efi Toding Tondok; Suryo Wiyono
Jurnal Fitopatologi Indonesia Vol 11 No 5 (2015)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Wheat has a great potency to be cultivated in Timor Tengah Utara (TTU). However, disease is one of the risks for introduction of wheat. The existence of wheat disease in TTU is unknown because wheat has never been grown in this area. This study aims to determine the potential risks of major diseases that will infect wheat plants when introduced to the TTU. The methods used in this study consisted of wheat cultivation in the field, followed by observation and identification of the main diseases on wheat. Wheat varieties grown in field were Dewata, Selayar and Nias. Koch’s postulate were performed to identify the suspected microbes as pathogens. Morphological-based identification was applied on the isolated pathogens. The main diseases on wheat cultivated in TTU were leaf blight and stem rot. The results of Koch’s postulate showed that Helminthosporium gramineum was the causal of leaf blight and Rhizoctonia sp. was the causal of stem rot. Disease incidence reached 82–93% and 11–22% for leaf bligh and stem rot disease, respectively. Disease severity of leaf blight and stem rot disease on var. Dewata was the lowest compared to var. Selayar and var. Nias.

Laporan Pertama Infeksi Begomovirus pada Tanaman Mentimun di Bali I Dewa Made Putra Wiratama; Gusti Ngurah Alit Susanta Wirya; I Dewa Nyoman Nyana; Ni Nengah Putri Adnyani; Gede Suastika
Jurnal Fitopatologi Indonesia Vol 11 No 5 (2015)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Leaf yellowing symptoms was commonly found in cucumber plants in Bali provinces, i.e. in Apuan and Bangli villages recently. Begomovirus infection is suspected as the causal agent, due to similar symptoms previously reported from cucumber plants in Java. In addition, Bemisia tabaci was observed in the field. The objective of this research was to identify the causal agent of leaf yellowing disease of cucumber in Bali. Virus detection and identification was conducted by polymerase chain reaction method using universal primers for Begomovirus, i.e. SPG1/SPG2. DNA fragment of 912 bp in size was successfully amplified from leaf samples. Analysis of nucleotide sequencing indicated that Begomovirus infecting cucumber plants in Bali has the highest homology (91%) with Squash leaf curl China virus (SLCCNV) isolate from Malaysia. This is the first report of SLCCNV infection in Bali.

Mikobiota pada Buah Cabai untuk Pengendalian Hayati Colletotrichum capsici Okky Setyawati Dharmaputra; Lisdar Idwan Sudirman; Melly Fitriani
Jurnal Fitopatologi Indonesia Vol 11 No 5 (2015)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Colletotrichum capsici is a pathogenic fungus causing anthracnose on various tropical fruits, especially chilli. Biological control agents have been used as an alternative method to control postharvest diseases. This study aims to examine the antagonistic potential of mycobiota on red chilli fruit against C. capsici. The pathogen was obtained from diseased red chilli fruits collected from three traditional markets in Municipality of Bogor, isolated on potato dextrose agar (PDA) medium containing chloramphenicol (100 mg L-1). Candidates of antagonistic mycobiota were isolated from healthy chilli fruits using serial diution method, followed by pour-plate method on PDA medium containing chloramphenicol (100 mg L-1). C. capsici isolate BIO51046 showed highest pathogenicity on chilli fruit var. IPB Perbani compared to other isolates. Seven isolates of filamentous fungi and 7 yeast isolates were obtained from healthy chilli fruits. Test of antagonism using dual culture method obtained 3 filamentous fungal isolates (Plectosphaerella cucumerina, MF2 and Aspergillus flavus) and 1 yeast isolate (Issatchenkia orientalis) which inhibited the growth of C. capsici BIO 51046 more than 70%. Plectosphaerella cucumerina and I.orientalis did not cause any diseases on chilli fruits var. IPB Perbani. Therefore, these 2 isolates were considered as potential antagonist against C. capsici BIO51046 as the causal agent of anthracnose of chilli

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