Reaction of selected apple cultivars to wilt pathogen Verticillium dahlia

Abstract

Karajeh M.R., Owais S.J. (2012): Reaction of selected apple cultivars to wilt pathogen Verticillium dahlia. Plant Protect Sci., 48: 99-104.The reaction of five apple cultivars to olive wilt caused by Verticillium dahliae Kleb was evaluated. Five apple cultivars (Royal Gala, Delicious Anabri, Double Red, Golden Delicious, Granny Smith) and one olive cultivar (Nabali Mohassan) were inoculated with V. dahliae and grown under partially controlled greenhouse conditions. Typical symptoms of the disease were developed on the inoculated olive seedlings. However, all tested apple cultivars did not show the typical symptoms of Verticillium wilt except cv. Delicious Anbari, which showed 8.31% disease severity. The average percentage of disease severity was 61.2% in Nabali Mohassan. The pathogen was positively re-isolated from the inoculated seedlings of cvs Nabali Mohassan and Delicious Anbari after 12 months from the inoculation date. Results indicate that an apple plantation to replace dead or severely diseased olive trees infested with Verticillium wilt is an appropriate low-cost and environmentally sound IPM alternative approach to control Verticillium wilt.

Effect of Cultivar Resistance and Soil Management on Spatial–Temporal Development of Verticillium Wilt of Olive: A Long-Term Study

“…Other studies suggest the replacement of wilted olive trees with apple trees, a non-host plant, as an environmentally friendly management practice (Karajeh and Owais, 2012), but little is known about replacement using resistant cultivars of olive. Generally, the rate of Verticillium-dead olive trees per year was 5.59%, when the susceptible cv.…”

Verticillium wilt caused by Verticillium dahliae in woody plants with emphasis on olive and shade trees

“…Replacement of diseased trees with non-host plants might also be an environmentally friendly management solution to control Verticillium wilt. Studies on replacement of dead or severely diseased olive trees with apple trees revealed that this would be an appropriate approach in an integrated disease management to control Verticillium wilt disease (Karajeh and Owais 2012). Use of biological control agents, including beneficial bacteria is another approach to manage Verticillium wilts (Markakis et al 2015;Mercado-Blanco et al 2004;Prieto et al 2009).…”