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mtDNAs of T type wheat cytoplasmic male sterile lines Ning Drawf 14(ND14) and their maintainers Ning Drawf 13 (ND13) were isolated and digested completely with restriction endonucleases EcoRI, PstI, EcoRV, BamHI. The results revealed that the molecular structure of mtDNAs from ND14 and ND13 cytoplasms were significantly deviated. The mitochondrial genomic difference between CMS line and maintainers were uncovered by southern hybridization with probes of 18S+5S rRNA、atpA genes from wheat and pea mitochondria, respectively. Due to the complexity of mtDNA and no proof of protein difference, it has not yet been demonstrated whether mtDNA difference of Normal and Male Sterile Cytoplasm of wheat is associated with CMS.
mtDNAs of T type wheat cytoplasmic male sterile lines Ning Drawf 14 (ND14) and their strains Ning Drawf 13 (ND13) were isolated and digested completely with restriction endonucleases EcoRI, PstI, EcoRV, BamHI. The results revealed that the molecular structure of mtDNAs from The mitochondrial genomic difference between CMS line and the maintainers were uncovered by southern hybridization with probes of 18S + 5S rRNA, atpA genes from wheat and pea mitochondria, respectively. Due to the complexity of mtDNA and no proof of protein difference, it has not yet been examined whether mtDNA difference of Normal and Male Sterile Cytoplasm of wheat is associated with CMS.