Occurrence and genetic similarity of Diplodia pinea on shoots and cones in seed orchards of Pinus spp. in north-western Turkey

Tuğba H. Doğmuş-Lehtijärvi, Ayşe Gülden Aday Kaya, Asko Lehtijärvi, Funda Oskay and Özgür Durmuş Kaya
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Tuğba H. Doğmuş-Lehtijärvi: Faculty of Forestry, Süleyman Demirel University, Isparta, Turkey
Ayşe Gülden Aday Kaya: Yenişarbademli Vocational School, Süleyman Demirel University, Isparta, Turkey
Asko Lehtijärvi: Faculty of Forestry, Bursa Technical University, Bursa, Turkey
Funda Oskay: Faculty of Forestry, Çankiri Karatekin University, Çankiri, Turkey
Özgür Durmuş Kaya: Faculty of Forestry, Süleyman Demirel University, Isparta, Turkey

Plant Protection Science, 2014, vol. 50, issue 4, 217-220

Abstract: Diplodia shoot blight disease can cause significant damage on coniferous trees and be particularly injurious to cones, which reduces the amount of seed production and germination. We investigated the disease severity and genetic variation of Diplodia pinea in one Pinus nigra and two P. sylvestris seed orchards. Disease surveys were carried out in İzmit (Marmara region, Turkey) in May 2012. Symptomatic shoots and cones were examined for the presence of pycnidia. Cultural and morphological characteristics of the isolates were studied using cultures grown on potato dextrose agar (PDA). Based on morphological characteristics and results using species specific primers, the pycnidia on shoots and cones were identified as D. pinea. In addition, Random Amplified Microsatellite Sequence (RAMS) analyses indicated that there was a single genet of D. pinea which caused the disease in the seed orchards. All of the 60 sampled trees were found to be infected by the fungus. There were differences in disease severity among the stands.

Keywords: diplodia shoot blight; pine; RAMS; disease severity (search for similar items in EconPapers)
Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:50:y:2014:i:4:id:17-2014-pps

DOI: 10.17221/17/2014-PPS

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