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Construction of the Primary Physical Map of Rice Chromosome 12

FU Bin Ying 1,2 , ZHU Ying Guo 1 , LI Zhi Kang 2 1. College of Life Sciences, Wuhan University, Wuhan, 430072, China; 2. International Rice Research Institute, Philippines  
A primary physical map of rice chromosome 12 was constructed using marker based chromosome landing and chromosome walking. A BAC library from IR64 was screened using 84 RFLP markers, 4 STS markers and 6 microsatellite markers on chromosome 12 by colony hybridization and polymerase chain reaction (PCR) amplification. A total of 59 contigs consisting of 419 BAC clones including 5 single clones were physically aligned on rice chromosome 12 with the largest BAC contig covering 855 kb. The whole physical map had a size of ~16 Mb and covered about 52% of rice chromosome 12. This physical map will be certainly helpful for map based gene cloning of agronomically and biological important genes and understanding the genome structure of the chromosome.
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