Bazı Dayanıklı Şeker Pancarı Çeşitlerinin Rhizoctonia spp.’ye Karşı Reaksiyonlarının Belirlenmesi

Yıl 2020, Cilt: 2 Sayı: 2, 275 - 295, 15.12.2020

Meltem Avan , Yakup Zekai Katırcıoğlu

https://doi.org/10.47898/ijeased.792519

Öz

Şeker pancarında fide ve kök çürüklüklerine sebep olan fungal hastalıklar, bu bitkide önemli verim ve kalite kayıplarına sebep olmaktadır. Ülkemizde Konya bölgesi, şeker pancarı üretim alanlarının yaklaşık %35.5'ini elinde tutan önemli bir şeker pancarı üretim alanıdır. Son yıllarda Konya bölgesinde kök çürümesi ve çökertenin meydana getirdiği verim kayıplarında önemli artışlar meydana gelmiştir. Çeşit reaksiyon çalışmaları, 2015-2017 büyüme dönemlerinde, Konya bölgesinde şeker pancarı taç ve kök çürüklüğüne neden olan Rhizoctonia spp.’lerden tespiti yapılan AG-2-2-IIIB, AG-4-HGI, AG-4-HGII, AG-4-HGIII, AG-A ve AG-K izolatlarına karşı denenmiştir. Bu çalışmada, 10 dirençli şeker pancarı çeşidi ve izolatların anastomosis grupları belirlenen ve tüm AG'leri temsil eden %50'nin üzerinde en yüksek virülansa sahip izolatlarından birer adet seçilerek, saksı denemelerinde inokulum tabaka tekniği kullanılarak denemeye tabi tutulmuştur. Dayanıklı şeker pancarı çeşitleri, Rhizoctonia kök çürüklüğü ile entegre bir yönetimin parçasıdır. Denemeler sonucunda çok çekirdekli Rhizoctonia izolatlarında inokulum seviyesinin ve patojenin yüksek olan virülensliğinin de etkisi sonucu, çeşitlerde bir dayanıklılık tespit edilmemiştir.Virülensliği daha düşük olan iki çekirdekli Rhizoctonia’lar da ise AG-A için Iguana, Valentina, Eldorado, Rodeo, Lider ve 5K614 çeşitleri, AG-K için ise Lider ve Valentina çeşitleri yüksek dayanıklı olarak belirlenmiştir.

Anahtar Kelimeler

Beta vulgaris, Çökerten, Dayanıklı çeşitler, Rhizoctonia spp., Yapay inokülasyon

Destekleyen Kurum

TÜBİTAK, BAP

Proje Numarası

115O562, 18L0447014

Teşekkür

Bu çalışma, 115O562 nolu TÜBİTAK projesinde elde edilen bitki örneklerinden ve 18L0447014 nolu Ankara Üniversitesi BAP Projesi ile finanse edilen proje sonuçlarının bir kısmını içermektedir. Yazarlar ayrıca Ankara Şeker Enstitüsünden Dr. Rıza Kaya’ ya ve arazi çalışmasına katkıları nedeniyle Torku, Konya Şeker ve Ilgın şeker fabrikalarına teşekkür ederler.

Determination of Reactions of Some Resistant Sugar Beet Varieties against Rhizoctonia spp.

Öz

Fungal diseases causing rotting of seedlings and roots on sugar-beet are one of the major problems for significant yield and quality losses. In Turkey, Konya region is an important sugar-beet production area with approximately 35.5% of Turkey production. In recent years, there has been significant increases in yield losses caused by root rot and damping-off in the Konya region. Resistant sugar beet variety reaction studies were tested against AG-2-2-IIIB, AG-4-HGI, AG-4-HGII, AG-4-HGIII, AG-A and AG-K isolates identified from Rhizoctonia spp., which cause sugar beet crown and root rot in Konya region, during the growing periods of 2015-2017. In this study, 10 resistant sugarbeet varieties and anastomosis groups of the isolates with the highest virulence above 50% were selected and each of them was tested by using an inoculum layer technique in the pot experiments. Cultivation of resistant sugar-beet varieties is part of an integrated management with Rhizoctonia root rot. As a result, no effective resistant varieties for multinucleate Rhizoctonia have been detected whereas binucleate Rhizoctonia with lower virulence, Iguana, Valentina, Eldorado, Rodeo, Lider and 5K614 varieties for AG-A, Lider and Valentina varieties for AG-K have been determined as high resistant.

Anahtar Kelimeler

Beta vulgaris, damping-off, resistant varieties, Rhizoctonia spp., artificial inoculation

Proje Numarası

115O562, 18L0447014

Kaynakça

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