title: Multiplex SSR-PCR approaches for semi-automated genotyping and characterization of loci linked to blast disease resistance genes in rice.
abstract: In the present study, 63 polymorphic microsatellite markers related to rice blast resistance genes were fluorescently labelled at the 5'-end with either 6-FAM or HEX using the G5 dye set and incorporated into a multiplex SSR-PCR for the detection of fragments using an automated system. For rice F3 families obtained from crosses between Pongsu Seribu 2 (Malaysian blast resistant cultivar) and Mahsuri (a susceptible rice cultivar), the genotypes for 13 designated multiplex SSR panels were determined. The genotyping assays were performed using a capillary-based ABIPRISM 3100 genetic analyser. The sizes of the SSRs alleles observed in the range from 79 to 324 bp. The observed marker segregation data were analysed using the Chi(2) test. A genetic linkage map covering ten chromosomes and comprising 63 polymorphic SSR markers was constructed, and the distorted loci were localised to linkage groups. The results indicated that distorted loci are presented on eight chromosomes.
authors: Laboratory of Food Crops, Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia; Department of Agronomy and Plant Breeding, Yadegar-e-Imam Khomeini RAH Shahre-Rey Branch, Islamic Azad University, Tehran, Iran. Electronic address: ashkani.sadegh@upm.edu.my.
authors: Sadegh
authors: S
authors: Ashkani
authors: Laboratory of Food Crops, Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia. Electronic address: mrafii@upm.edu.my.
authors: Mohd Yusop
authors: MY
authors: Rafii
authors: Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
authors: Mahmoodreza
authors: M
authors: Shabanimofrad
authors: Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
authors: Majid
authors: M
authors: Foroughi
authors: Laboratory of Food Crops, Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
authors: Parisa
authors: P
authors: Azizia
authors: Laboratory of Plantation Crops, Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
authors: Mohd Sayeed
authors: MS
authors: Akhtar
authors: Laboratory of Plantation Crops, Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
authors: Mahbod
authors: M
authors: Sahebi
authors: Agrotechnology and Bioscience Division, Malaysian Nuclear Agency, Bangi, Kajang, Selangor, Malaysia.
authors: Abd Rahim
authors: AR
authors: Harun
authors: Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
authors: Abbas
authors: A
authors: Nasehi
mesh_terms: D060467:Disease Resistance / Q000235:genetics*; D017343:Genes, Plant / Q000235:genetics; D008040:Genetic Linkage; D005838:Genotype; D008296:Malaysia; D018895:Microsatellite Repeats; D012275:Oryza / Q000235:genetics*; D010935:Plant Diseases / Q000235:genetics*; D016133:Polymerase Chain Reaction / Q000379:methods*; D011110:Polymorphism, Genetic
keywords: Capillary electrophoresis; Fluorescent-labelled; Linkage map construction; Multiplex PCR; Rice (Oryza sativa L.); Rice blast (Magnaporthe oryzae); SSR genotyping; Segregation distortion analysis