Güneydoğu Anadolu Bölgesi'nde mercimekte toprak kökenli fungal hastalık etmenlerine karşı bazı mercimek çeşitlerinin reaksiyonlarının belirlenmesi üzerinde çalışmalar

Abstract

Lentil is one of the economically important major crops growing in a very large area in Southeast Anatolia where the dry agriculture is common. Soilborne fungal diseases are one of the limiting biotic factors which limit lentil production in the region. Soilborne fungal pathogens are the main constraints affecting both yield and quality. This study was conducted to determine reaction of some lentil cultivars against soil pathogens, which are commonly found in lentil grown fields. The study carried out in Diyarbakir and Mardin province in 2002-2004. Under controlled conditions in greenhouse, reactions of six lentil cultivars were tested against two isolates of Fusarium oxysporum (A.3.2 and A.3.4) under natural conditions in infected lentil field, these six lentil cultivars were also tested against soilborne fungal pathogen complex ( Fusarium oxysporum, Fusarium solani, Phoma medicaginis var pinodella, Alternari spp, Fusarium spp .). According to results, reactions of six cultivars in greenhouse and natural conditions were different. The disease severity on cultivars tested under control conditions were between 15.0 - 69.3 % whereas under natural conditions severities were between 10.3 – 47.6 %. In both trials, lentil cultivars cv. Cagil (F 95-30L), cv. Sakar (BM-76) and cv. Firat-87 were found to be resistant or moderately resistant against tested fungal agents. The other tested cultivars, cv. Yerli kirmizi, cv. Seyran-96 and cv. Siyah cesit were either susceptible or very susceptible.