Blast, caused by Magnaporthe grisea, is the most devastating disease of
rice worldwide. In this study, the main objective was to identify and
map a new gene for blast resistance, in an indica rice cultivar Tadukan
against blast fungal isolate B157, using molecular tools. F2 segregating
population was derived from CO39 (susceptible) and Tadukan
(resistant), and molecular mapping of the blast resistance gene was
carried out using simple sequence length polymorphism (SSLP) and
amplified fragment length polymorphism (AFLP) methods. Two SSLP
markers, RM206 and RM21 and three AFLP markers (AF1: E-aca/Mctt;
AF2: E-aca/M-cat and AF3: E-acc/M-cac2) were identified to be
linked to the resistance gene. The co-segregation analysis using SSLP
markers implied that the blast resistance gene designated Pi38 resides
on rice chromosome 11