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

Martin, A., Platz, G. J., de Klerk, D., Fowler, R. A., Smit, F., Potgieter, F. G. and Prins, R. (2018) Identification and mapping of net form of net blotch resistance in South African barley. Molecular Breeding, 38 (5). p. 53. ISSN 1572-9788

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Article Link(s): https://doi.org/10.1007/s11032-018-0814-1

Publisher URL: https://doi.org/10.1007/s11032-018-0814-1

Abstract

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™) markers were designed for this QTL region. These and microsatellite markers can now be used to routinely select for NFNB resistance.

Item Type:Article
Business groups:Crop and Food Science
Subjects:Plant culture > Field crops > Barley
Plant pests and diseases > Individual or types of plants or trees > Barley
Deposited On:17 Aug 2018 02:16
Last Modified:17 Aug 2018 02:16

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