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Net blotches are the most widely distributed foliar diseases of barley worldwide, causing significant losses in grain yield. They occur as net form net blotch, caused by Pyrenophora teres f. teres and spot form net blotch caused by P. teres f. maculata. Both sexual and asexual reproduction play a role in the P. teres disease cycles leading to changes in genetic variation of populations. Breeding programs have to keep pace with pathogenic changes and ensure different sources of resistance are present in current barley cultivars. Knowledge of the genetic architecture and genes involved in virulence is thus vital to increase the durability of net blotch resistance in barley cultivars. This chapter explores the molecular biology, life-cycle and epidemiology of the net blotch fungi and discusses the key challenges we are facing in managing the net blotches using both fungicide resistance and breeding strategies to achieve durable disease resistance in barley.
Price: $32.50
Publisher: Burleigh Dodds Science Publishing
Imprint: Burleigh Dodds Science Publishing
Series: Burleigh Dodds Series in Agricultural Science
Publication Date:
18 October 2021
ISBN: 9781801463027
Format: eBook
BISACs:
TECHNOLOGY & ENGINEERING / Agriculture / Agronomy / Crop Science, TECHNOLOGY & ENGINEERING / Agriculture / Sustainable Agriculture, TECHNOLOGY & ENGINEERING / Pest Control
1 Introduction 2 Hybrids 3 Molecular markers to accurately diagnose P. teres isolates 4 Genetic variation and population genetics of P. teres 5 Pathogenic variation and changes in virulence 6 Differential sets 7 The P. teres genome 8 Identification of genes associated with virulence/avirulence by QTL and association mapping 9 Managing the net blotches 10 Conclusion and future trends 11 Where to look for further information 12 Acknowledgements 13 References