TAILIEUCHUNG - The effect of salicyclic acid and endomycorrhizal fungus glomus etunicatum on plant development of tomatoes and Fusarium wilt caused by Fusarium oxysporum f.sp lycopersici

The effect of salicylic acid (SA) and Glomus etunicatum (GE) on plant development of tomatoes and infection potential of wilt disease Fusarium oxysporum lycopersici (Fol) were studied. | Turk J Agric For 25 (2001) 25-29 © TÜB‹TAK The Effect of Salicyclic Acid and Endomycorrhizal Fungus Glomus etunicatum on Plant Development of Tomatoes and Fusarium Wilt Caused by Fusarium oxysporum lycopersici Hülya ÖZGÖNEN, Mehmet B‹Ç‹C‹ and Ali ERKILIÇ Çukurova University, Agricultural Faculty, Plant Protection Department Adana-TÜRK‹YE Received: Abstract : The effect of salicylic acid (SA) and Glomus etunicatum (GE) on plant development of tomatoes and infection potential of wilt disease Fusarium oxysporum lycopersici (Fol) were studied. The effects of different SA concentrations on mycelial development of Fol were tested in vitro and two concentrations of SA and GE were included in pot experiment. SA completely inhibited the mycelial development of Fol in vitro at concentrations from mM to mM and ED50 value was found as mM. GE could increase dry weight of plant, length of shoot and root growth irrespective whether Fol infected the tomato plants. The root colonization by GE was determined as when the Fol was absent and as when the plants were infected. However, in different combinations of GE and SA, the root colonization was determined between and . In pot experiments, the combination of GE and 1 mM SA had the highest effect on infection of Fusarium wilt and disease severity was reduced by 70%. Results indicate that GE increases the growth of tomato plants, and could be used against Fusarium wilt of tomato. While SA is effective against the pathogen, the root colonization of GE is, however, affected negatively by SA. Key Words : Tomato, Fusarium oxysporum . lycopersici, Glomus etunicatum induced resistance, salicyclic acid Salisilik Asit ve Endomikorizal Fungus Glomus etunicatum’ un Domates Bitkilerinin Geliflimine ve Fusarium oxyporum lycopersici Taraf›ndan Neden Olunan Fusarium Solgunlu¤una Etkisi Özet : Salisilik asit (SA) ve Glomus etunicatum (GE)’un domateslerde bitki geliflmesi ve .

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