Detection of Fusarium oxysporum and Fusarium equiseti Associated With Two Varietiesof Soybean in Sudan their Role and Control

No Thumbnail Available
Date
2015-05-13
Authors
Thuwiba Hassan Bashir
Journal Title
Journal ISSN
Volume Title
Publisher
University of Khartoum
Abstract
Two samples of soybean seeds (Glycine max) were obtained from Arab Seed Company. These were III 14 and II 17 tested by the standard blotter method Internationally Accepted Techniques (ISTA) 1966. Fusarium oxysporum (Schlecht) and Fusarium equiseti (Corda) were encountered in all samples in high percentage ranging from 60%-75%. Alternaria alternata was detected in 6%, Curlvalaria lunata was 14%, Drechslera was 31%, Asperigillus niger was 22%, Microphomina phaseolina 18%, Rhizopus 46% and bacteria were also encountered in low percentage. The germination was 33% for variety II 17 and 48% for the variety III 14. The chlorine pretreated seed samples showed that the two fungi were seed-borne. The best medium for growth of fungi was Czapek’s dox agar for the fungus Fusarium equiseti and potato dextrose agar for Fusarium oxysporum. The control of the two species of Fusaroum was tested by two fungicides Benlate and Bayleton in vitro on two media PDA and Czapek’s dox agar medium. Fusarium oxysporum tolerated the two fungicides, more than Fusarium equiseli, but it was observed that the two fungicides, controlled the growth of the two fungi in the lowest concentrations 10 p.p.m., and stopped the growth of the two fungi in the high concentrations 100 p.p.m.
Description
A thesis submitted in partial fulfillment of the requirements for the degree of Master Science in (Crop Protection) “Plant Pathology”
Keywords
Soybean oxysporum Fusarium equiseti Fusarium Plant Pathology Crop Protection Sudan University of Khartoum
Citation
Thuwiba Hassan Bashir, Detection of Fusarium oxysporum and Fusarium equiseti Associated With Two Varietiesof Soybean in Sudan their Role and Control. – Khartoum : University of Khartoum, 2004. - 52 P. : illus., 28 cm., M.Sc.