Sadianti, E. and Mucharromah, Mucharromah and H., Gusmara (2008) KEBERLANJUTAN PERLINDUNGAN INDUKSI RESISTENSI Sistemik OLEH MIKORIZA VESIKULER ARBUSKULAR Glomus sp. PADA TANAMAN TOMAT TERHADAP Fusarium oxysporum. Akta Agrosia, 11 (1). pp. 75-79. ISSN 1410-3354
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Abstract
Induced systemic resistance (ISR) by vesicular arbuscular mycorrhizae (VAM), Glomus sp., has been shown effective to protect tomato plants against Fusarium oxysporum. Since plant-mycorrhizae interaction could happened since early growth, study of ISR sustainability need to be carried out. The experiment was done in March to June 2004 in a random block design, with grouping based on time of inoculation, and 5 replications per treatment. Representative of two experiment is presented. Tomato plantlets grown on Glomus sp. infested or not (control) were inoculated with F. oxysporum by “pin-prick” method on the basal stem, at 2, 3, 4, 5, and 6 weeks after planting (WAP). Plants were kept in the wirehouse and symptom development was observed 21 days after inoculation (DAI). The experiment showed that Glomus sp. infestation increased tomato plant resistance to F. oxysporum , and the ISR sustained until at least 6 WAP. Glomus sp. infestation prolonged incubation period to 7 days, lowered the percentage of infected root by 86.84%; reduced disease intensity on the root system by 86.87%; shortened lesion length by 56.25%; reduced lesion area by 30.34% and increased plant height and leaf number slightly. In this experiment, the percentage of Glomus sp. infestation was 69% to 80%. The shortest incubation period was 4.6 to 7.2 days in non-infested samples, and the highest percentage of infected root was 8.4-19.8%; disease intensity on root was 5.0-11.8%; lesion length was 25.0-65.9%; and lesion area was 3.9-11.7%. Those variables were 7.4-9.4 days; 1.1-2.3%; 0.7-2.0%; 8.8-25.8% and 3.1-6.4% respectively in Glomus sp. infested samples. With the above level of protection and sustainability, ISR by Glomus sp. give hope to control Fusarium Wilt.
| Item Type: | Article |
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| Subjects: | S Agriculture > S Agriculture (General) |
| Divisions: | Faculty of Agriculture > Journal |
| Depositing User: | Mr. Amwaluddin Lubis |
| Date Deposited: | 23 Jun 2012 23:23 |
| Last Modified: | 23 Jun 2012 23:23 |
| URI: | http://repository.unib.ac.id/id/eprint/270 |
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