Comparison of Homoeologous Chromosomes 1 and 15 Between a Gossypium hirsutum by G. mustelinum Map and a Map of G. hirsutum by G. barbadense

To explore the genome structure of G. mustelinum and understand the transmission genetics in crosses between this species and cultivated cotton, a primary G. hirsutum x G. mustelinum (HM) genetic map was constructed and then compared with a G. hirsutum x G. barbadense (HB) map. In this study, we compared the structure of homoeologous chromosomes 1 and 15 between the two interspecific maps. The results showed that the arrangements of genetic loci along the chromosomes of HM and HB are identical in most cases; however, a number of significant structural rearrangements were also observed.