Effect of ultra violet on Fusarium oxysporum transmitted by tomato and red pepper seeds [electronic resource].

Includes references.

Tomato and red pepper were widespread in all Investigated fields of Giza governorate. The Isolated fungi were varied in their. frequency and virulence. Also tomato and reel pepper cultivars were varied In their susceptibility to the wilt disease. Tomato variety C. V. Peto-86 and Red pepper variety c. v. Amar seeds when exposed to ultraviolet rays at 254 nm for 1, 3 and 5 minutes minimized the severity of infection. As for exposure of both cultlvars after 5 nim. The highest effect In decreasing severity of Infection after occurred 35 day of inoculation. Meanwhile, ultraviolet radIation at 365 nm for 1,3, and 5 min. gave the same trend on both cultivars compared with fungicidal treatments. Seed exposure to U. V. radiation (254nm and 365nm) and seed dressing by the Tops/n M70 of cv. Peto-86 of tomato and Amar red pepper have significantly Increased the tested plant parameters. The increasing of all plant parameters was increased by Increasing U. V exposure time after 42 days from planting. Meanwhile seeds of both susceptible cultivars when treated with the chemical fungicide as recommended dose were less affected during this period 2008-2009 growing seasons.

Summary in Arabic.

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