Main Article Content
Preservation of fungi isolates is needed for further research but usually the preservation treatment is only concerned on life span and growth of the fungi. This research aimed at knowing life span and aggressivity of Fusarium oxysporum f. sp. zingiberi isolates from ginger cv. Gajah after preserving for three years in sterile soil. Completely Randomized Design and Randomized Block Design were used for in vitro and in planta test, respectively, with 10 isolates of F. oxysporum f. sp. zingiberi from Temanggung, 8 isolates of F. oxysporum f. sp. zingiberi from Boyolali, and 1 control, each repeated three times. Variables observed were incubation period, infected area, disease intensity, rhizome wet weight, number of leaves, and crop height. Result of the research showed that all isolates of F. oxysporum f. sp. zingiberi could still grew well. Based on origin of the isolates, the highest aggressivity on ginger rhizome was TKO3 from Temanggung and BAO6 from Boyolali with infected area of 67.67 mm2 and 56.67 mm2, respectively. On ginger crop, the highest aggressivity was BAO1 from Boyolali and TPO2 from Temanggung with disease intensity of 68.09% and 38.13%, respectively. All isolates of F. oxysporum f. sp. zingiberi did not cause significantly different effect on incubation period, disease intensity, crop height, leaves total, and rhizome wet weight but they caused significantly different effect on infected area.
Key word: aggressivity, Fusarium oxysporum, ginger, preservation, steril soil
Authors who publish in Jurnal Fitopatologi Indonesia agree to the following terms:
1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License (CC BY-SA) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository), with an acknowledgement of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.