Determination of pathogens causing damping-off and their pathogenicity in tomato seedbeds in Ankara (Ayaş, Beypazarı and Nallıhan districts) province

Ayşe AŞKIN; Y. KATIRCIOĞLU

Article Details

Determination of pathogens causing damping-off and their pathogenicity in tomato seedbeds in Ankara (Ayaş, Beypazarı and Nallıhan districts) province

Authors:

Ayşe AŞKIN | Y. KATIRCIOĞLU

Publisher:

Zirai Mücadele Merkez Araştırma Enstitüsü

Journal:

Plant Protection Bulletin 2008 Vol.48 Issue 2, pp.49-59

Document Type:

Article

Publication Date:

10/2009

Document Language:

English

Document ID (Org No.):

2000885764

Frequency:

Quarterly

eISSN:

1308-8122

pISSN:

0406-3597

Keywords:

Abstract:

 

This research was carried out for determination of  pathogens causing damping-off and their pathogenicity in tomato seedbeds in  Ankara province (Ayaş, Beypazarı and Nallıhan districts) in 2003. Two hundred eleven  samples of tomato seedlings, thought to be infected with damping off were  collected from 42 seedbeds. Fusarium spp., Pythium spp., Rhizoctonia solani, Alternaria spp. and Aspergillus spp. were isolated from all collected   tomato seddlings. Fusarium spp., Pythium spp., R. solani and Aspergillus spp. were subjected to pre-pathogenicity test and  disease severity and effects on emergence were determined in pot experiment.  Consequently, the results revealed that Pythium spp., R. solani and Fusarium spp. were important pathogens  causing damping-off in tomato seedlings in the region. While Fusarium spp. were found to be the most  widespread pathogen, Pythium  spp. were the most virulence pathogen.  Meanwhile, although R. solani was not  so widespread pathogen, its pathogenicity was found to be high.

 

Bu çalışma Ankara ili (Ayaş, Beypazarı ve Nallıhan  ilçeleri) domates fideliklerinde çökertene neden olan önemli toprak  patojenlerinin tespit edilmesi ve patojenisitelerinin belirlenmesi amacıyla  2003 yılında yürütülmüştür. Bölgedeki 42 adet domates fideliğinden 211 adet  hastalıklı fide örneği toplanmıştır. Hastalıklı fidelerden Fusarium, Pythium, Rhizoctonia  solani, Alternaria ve Aspergillus cinslerine ait funguslar  elde edilmiştir. Pythium spp., Rhizoctonia solani, Fusarium spp.ve Aspergillus spp. izolatları ile ön patojenisite testleri yürütülmüştür. Bu testler sonucunda  etkili bulunan izolatlar ile saksılarda patojenisite testleri yapılmıştır. Bu  denemelerde izolatların % çıkış ve % hastalık şiddetleri belirlenmiştir. Pythium spp., R. solani ve Fusarium spp. domateste çökertene sebep olan önemli funguslar olarak tespit edilmiştir.  Bölgede en yoğun olarak izole edilen  fungus Fusarium spp., patojenisitesi en yüksek  fungus Pythium spp. olmuştur. R. solani ise çok yoğun olmamasına  karşın patojenisitesi yüksek bulunmuştur.

Article Details

Determination of pathogens causing damping-off and their pathogenicity in tomato seedbeds in Ankara (Ayaş, Beypazarı and Nallıhan districts) province

Authors: Ayşe AŞKIN | Y. KATIRCIOĞLU

Publisher: Zirai Mücadele Merkez Araştırma Enstitüsü

Journal: Plant Protection Bulletin 2008 Vol.48 Issue 2, pp.49-59

Document Type: Article

Publication Date: 10/2009

Document Language: English

Document ID (Org No.): 2000885764

Frequency: Quarterly

eISSN: 1308-8122

pISSN: 0406-3597

Ankara

çökerten

domates

patojenisite

Issues

Authors:

Ayşe AŞKIN | Y. KATIRCIOĞLU

Publisher:

Zirai Mücadele Merkez Araştırma Enstitüsü

Journal:

Plant Protection Bulletin 2008 Vol.48 Issue 2, pp.49-59

Document Type:

Article

Publication Date:

10/2009

Document Language:

English

Document ID (Org No.):

2000885764

Frequency:

Quarterly

eISSN:

1308-8122

pISSN:

0406-3597