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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 8 No 5 (2012)" : 5 Documents clear

Potensi Ekstrak Kangkung sebagai Biofungisida untuk Mengendalikan Penyakit Busuk Buah Fusarium pada Tomat Bonny Poernomo Wahyu Soekarno; Surono .; Eva Marhaenis
Jurnal Fitopatologi Indonesia Vol 8 No 5 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

One of the important pathogens on tomato is Fusarium sp. causing wilt and fruit rot. This study aims to investigate the potency of water spinach (Ipomea aquatica) as a biofungicide for inhibiting growth and development of tomato fruit rot caused by Fusarium sp. This study showed inhibiting ability of I. aquatica stem extract to Fusarium sp. growth ranges from 3.40% to 8.67%, while inhibiting ability of leaves extract can reach 3.40% to 45.55%. Resistance induction test showed that in vitro treatment of I. aquatica leaves extract 20% can lengthen incubation time of Fusarium fruit rot compared to positive and negative control. Leaves extract of I. aquatica 20% is potential as biofungicide.Key words: biofungicide, Fusarium sp., Ipomea aquatica

Keragaman Fusarium pada Rizosfer Tanaman Kacang Panjang dan Peranannya bagi Pertumbuhan Tanaman Rahmi Sutrisni; Widodo .
Jurnal Fitopatologi Indonesia Vol 8 No 5 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Fusarium wilt caused by Fusarium oxysporum f.sp. tracheiphilum is one of the important diseases on yard long bean. Besides of its capability of causing diseases in plants, some species of Fusarium are non pathogenic and able to control Fusarium wilt as naturally occured in disease suppressive soils. The objective of this study was to observe the rhizosphere Fusarium diversity and its role on the plant growth of yard long bean. Out of 56 isolates collected during the study, four species were identified, including F. oxysporum (39.3%), F. semitectum (28.6%), F. longipes (12.5%), F. solani (5.3%), and one unidentified Fusarium sp. (14.3%). The highest diversity index was obtained from the field planted with corn as previous crop. In general, 56 isolates tested could be differentiated into 3 groups based on their effects on plan growth, i.e.: deleterious that caused wilting or growth suppressive without wilting (50.0%), neutral that no significantly difference growth as untreated (41.1%), and growth promoting (8.9%). All three isolated Fusarium causing plant wilting identified as F. oxysporum, while isolates with growth promoting effect were identified as F. oxysporum (4 isolates) and F. solani (1 isolate). These five selected growth promoting Fusarium also suppressed the wilt disease and increased the plant growth when co inoculated with wilt pathogen of yard long bean, F. oxysporum f.sp. tracheiphillum.Key words: diversity, Fusarium, long yard bean, rhizosphere

Ketahanan Biokimia Tanaman Cabai terhadap Begomovirus Penyebab Penyakit Daun Keriting Kuning Rokhana Faizah; Sriani Sujiprihati; Muhamad Syukur; Sri Hendrastuti Hidayat
Jurnal Fitopatologi Indonesia Vol 8 No 5 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Plant biochemical resistance towards virus infection can be evaluated through measurement of salicylic acid accumulation and peroxidase concentration. A research was conducted to study biochemical resistance of chillipepper to infection of Pepper yellow leaf curl Begomovirus (PYLCV) the causal agent of pepper yellow leaf curl disease. Virus inoculation was done using insect vector, Bemisia tabaci. Salicylic acid accumulation and peroxidase concentration on 6 chillipepper genotypes (35C2, IPB C15, IPB C26, IPB C10, IPB C14, dan IPB C12) was measured 120 h after inoculation. The results showed that salicylic acid accumulation and peroxidase concentration were higher on plants after virus infection. Susceptible genotypes (35C2, IPB C15, IPB C26) tend to have higher salicylic acid accumulation and peroxidase concentration than those of resistant genotype (IPB C12). Positive correlation was observed between biochemical resistance (salicylic acid accumulation) and structural resistance (length of palisade meshophyll cell).Key words: Begomovirus, Pepper yellow leaf curl virus, peroxide enzyme, resistance mechanism, salicylic acid

Perlakuan Udara Panas sebagai Tindakan Karantina terhadap Biji Kedelai Ade Syahputra; Ranta Hadi
Jurnal Fitopatologi Indonesia Vol 8 No 5 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Introduction and dissemination of plant disease agents can be avoided through physical treatment on agricultural commodities as pre and post harvest treatment. Research was conducted to find effective quarantine treatment to eradicate fungi infestation on soybean seed. Four fungi species were chosen for this study, i.e. Cercospora sp., Sclerotium rolfsii, Colletotrichum gloeosporiodes, and Pestalotia sp. The evaluation was conducted for seed, seedling, bean oilcake, and fungi culture using hot air treatment on 45, 50, 55, 60, 65, 70 °C and control for 5 h. In general, heat treatment caused suppression significantly on seed germination and seedling growth. However, heat treatment on 45, 50 and 55 °C resulted on lower infestation of fungi on seed, and no infestation was observed on 65 and 70 °CKey words: eradication, quarantine treatment, heat treatment

Laporan Pertama tentang Infeksi Polerovirus pada Tanaman Cabai di Daerah Bali, Indonesia Gede Suastika; Sedyo Hartono; I Dewa Nyoman Nyana; Tomohide Natsuaki
Jurnal Fitopatologi Indonesia Vol 8 No 5 (2012)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

During a visit to Bali Island in September 2011, we found chilipepper plants exhibiting yellowing symptoms. The infected plants showed quite similar symptom to those of the recently reported Pepper yellow leaf curl virus from Israel and Japan, but there was no shortening of internodes or leaf rolling. We have ampliﬁed part of the genome of a virus associated with this disease using degenerate primers for members of the genus Polerovirus. The reverse transcription-polymerase chain reaction (RT-PCR) from symptom-bearing samples resulted in the amplification of a 650 bp band which is the expected size. RT-PCR from healthy samples did not produce an amplicon. Based on our results, we concluded that yellowing disease on chilipepper observed in Payangan, Gianyar, Bali is associated with a virus belonging to the genus Polerovirus. This is the first report on Polerovirus infection in chilipepper in Indonesia. Some researches for elucidation of the virus species and biological/molecular characters are being conducted.Key word: chilipepper, Indonesia, Polerovirus

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