Increased meiotic recombination in plants by inhibition of a protein or recq4 top3a complex rtr

The invention relates to a method for increasing the frequency of meiotic recombination in plants by inhibition of protein or RECQ4 TOP3 A, in particular by mutagenesis or quenching or TOP3A RECQ4 gene encoding said protein. The present invention is used in particular in the field of plant breeding and genetic mapping.