For a given trait and QTL maximum size, retrieve accession numbers of the QTLs along with their mapping positions in Oryza sativa and retrieve genes present in the mapping genomic interval of a given QTL. Data integration from TropGene, Gramene and Ensembl relational databases. Semi-automatic creation of 7 Semantic Web Services for TropGene and Gramene with BioSemantic Use of BioMart Web Services for Ensembl interrogation