Abstract
Cytoplasms of Agropyron glaucum, Ag. trichophorum and Haynaldia villosa are functionally different as revealed by several physiological characteristics of the alloplasmic lines having these cytoplasms and the same wheat nucleus. To find genetic differences among the cytoplasms of these species at molecular level, we studied chloroplast (ct) and mitochondrial (mt) DNAs using the alloplasmic lines. Cytoplasms of the two Agropyron species had closely related ctDNAs, whereas their mtDNAs differed greatly in their structure. As compared to the ct and mtDNAs of common wheat, those of the Agropyron species and Hy. villosa were found to have been equally diverged.
