DNA SEQUENCE IMPARTING CYTOPLASMIC MALE STERILITY, MITOCHONDRIAL GENOME, NUCLEAR GENOME, MITOCHONDRIA AND PLANT CONTAINING SAID SEQUENCE AND PROCESS FOR THE PREPARATION OF HYBRIDS

摘要

The present invention relates to an Ogura sterility DNA sequence which confers, when present in the cytoplasm of a plant, male cytoplasmic sterility to said plant. It also relates to a mitochondrial genome, a nuclear genome, a mitochondria and a cytoplasm containing this sequence. It also relates to a plant belonging to the genus Brassica containing this genome and a process for the preparation of hybrid plants using such a plant, and a hybrid thus obtained.