Nucleic acids which are markers for the genes for resistance to rice rust and genes for resistance to rice rust which are isolated by means of these markers

摘要

The present invention provides nucleic acids which are markers for the genes for resistance to rice rust, which are isolated from rice genomic DNA and which are DNA sequences having a total length up to 2 kb, with two identical sequences of at least 10 bases at their two ends and which are localised at a distance of 2.0 cM from the genes for resistance to rice rust Pi-b, Pi-ta or Pi-ta<2>. In accordance with the present invention, it is possible to easily isolate the genes for resistance to rice rust and the associated genes from cultivated rice varieties containing Pi-b, Pi-ta or Pi-ta<2>, promoting in this way the development and crossing of superior cultivated varieties. It is also possible to easily perform a test for resistance of the rice. This will open the way for the creation of new resistant genes.