The moiety of a chimeric gene in mitochondrial genome, orf79 and orfH79, probably related to BT-type and HL-type CMS of rice respectively, has 98% homology and only 4 nucleotide variation in DNA sequence.

• 水稻线粒体基因组嵌合基因orf79和orfH79分别被认为与BT-型和HL-型水稻CMS有关,两者具有98%25的同源性,并且其DNA序列只存在4核苷酸的差异。