Fig. 2. The molecular genetic linkage map of rice based on 154 doubled-haploid lines derived from a cross, CT9993-5-10-1-M x IR62266-42-6-2. Chromosome numbers are indicated above each chromosome. Distances are given in Kosambi centimorgans. The letters before the numbers in the marker names indicate the category of mapped clones as follows: RM, rice microsatellites; EM and ME, AFLPs; other letters, RFLPs. The positions of QTL are indicated by vertical bars beside chromosomes. The bar length is drawn to be equal to the length as detected for the QTL in the QTLMapper software.