Identification and mapping of net form of net blotch resistance in South African barley

Martin, Anke and Platz, Gregory J. and de Klerk, Daniel and Fowler, Ryan A. and Smit, Francois and Potgieter, Francois G. and Prins, Renee (2018) Identification and mapping of net form of net blotch resistance in South African barley. Molecular Breeding, 38 (5 - Article 53). ISSN 1380-3743


Net form of net blotch (NFNB) caused by the fungus Pyrenophora teres f. teres is an economically important foliar disease of barley (Hordeum vulgare) in southern and eastern Africa. Little attention has been given to disease resistance breeding, and knowledge about the presence of NFNB resistance in breeding lines is limited. Deploying resistance into varieties used in this region is important for future control of the disease. We have identified NFNB disease resistance in existing South African breeders' lines and have mapped the resistance in line UVC8. Six different trials, three conducted in South Africa and another three in Australia, were used to identify resistance QTL. A major QTL was identified on chromosome 6H having a LOD score of 40.5 and 55% of the phenotypic variance explained. Kompetitive Allele Specific PCR (KASP (TM)) markers were designed for this QTL region. These and microsatellite markers can now be used to routinely select for NFNB resistance.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Institute for Life Sciences and the Environment - Centre for Crop Health
Date Deposited: 07 Feb 2019 06:16
Last Modified: 07 Feb 2019 22:03
Uncontrolled Keywords: hordeum vulgare; net form of net blotch; quantitative trait loci; KASP (TM) markers
Fields of Research : 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences
Identification Number or DOI: 10.1007/s11032-018-0814-1

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