Identification of QTL for resistance against two fungal pathogens, Pyrenophora teres f. teres and Bipolaris sorokiniana, in a barley (Hordeum vulgare L.) diversity set ... : Identifizierung von QTL zur Resistenz gegen zwei Pilzpathogene, Pyrenophora teres f. teres und Bipolaris sorokiniana, in einem Gerstendiversitätsset (Hordeum vulgare L.) ...

• Main Authors: Novakazi, Fluturë, Justus Liebig University Giessen
• Format: Doctoral or Postdoctoral Thesis
• Language: English
• Published: Universitätsbibliothek Gießen 2020
• Subjects: barley; GWAS; net blotch; spot blotch; ddc630; Arctic
• Online Access: https://dx.doi.org/10.22029/jlupub-16781; https://jlupub.ub.uni-giessen.de//handle/jlupub/17403

Barley is worldwide the fourth most important cereal crop and is cultivated in near desert to sub-arctic conditions. The majority of production, around 70 %, is used for animal feed, 20 % are used for malting and the rest for human consumption, with regional differences.Pests and diseases constantly result in high yield losses. Two worldwide important fungal foliar diseases of barley are Pyrenophora teres f. teres (Ptt) and Bipolaris sorokiniana (Bs), the causal agents of net blotch and spot blotch, respectively. Yield losses are on average around 40 % and can amount to over 70 % in years with epidemics. Both pathogens are highly variable and the occurrence of new pathogenic strains demands for breeding of resistant cultivars.In order to identify new resistance sources, a diverse barley set comprising 449 accessions originating from over 50 different regions all over the world, expressing different levels of resistance against both pathogens, was screened. Seedling resistance was tested under controlled ...