Genetic analysis of the resistance to rice blast in the BC2F1 population derived from MR263 × Pongsu Seribu 1

Rice blast disease, caused by Magnaporthe oryzae, is the most important and most devastating rice disease globally. For genetic analysis of resistance to rice blast, the present study used a BC 2 F 1 population developed through marker-assisted backcrossing from a cross between blast susceptible MR2...

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Published in:Biotechnology, biotechnological equipment biotechnological equipment, 2018-09, Vol.32 (5), p.1134-1140
Main Authors: Hasan, M. M., Rafii, M. Y., Ismail, M. R., Mahmood, M., Rahim, H. A., Latif, M. A., Amirul Alam, Md, Ahmad, Fahim, Malek, M. A.
Format: Article
Language:English
Subjects:
blast resistant
Chi-square test
Genetic analysis
MABC
Magnaporthe oryzae
Marker-assisted selection
Markers
Pongsu Serebu 1 and MR263
Population
Population studies
Presenilin 1
Rice blast
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Summary:Rice blast disease, caused by Magnaporthe oryzae, is the most important and most devastating rice disease globally. For genetic analysis of resistance to rice blast, the present study used a BC 2 F 1 population developed through marker-assisted backcrossing from a cross between blast susceptible MR263 and blast resistant Pongsu Seribu 1 (PS1). We selected out of 450 markers, 65 polymorphic simple sequence repeat markers, including the Pi gene-based markers, and identified 16 markers associated with blast resistance that showed heterozygous bands in the BC2F1 population. Of the 16 polymorphic markers, only eight (RM5961, RM263, RM163, RM224, RM262, RM168, RM229 and RM169) showed a good fit to the expected segregation genotypic ratio (1:1) for the single dominance gene model (df = 1.0, P 
ISSN:1310-2818
1314-3530
DOI:10.1080/13102818.2018.1506266