Chromosomal Transmission in F2 BC1 Hybrid Progenies between Sugarcane and Erianthus fulvus

摘要

[Objective]This study aimed to provide a scientific basis for breeding new sugarcane varieties with hybrid progenies of Erianthus fulvus and modifying existing sugarcane cultivars.[Method]Chromosomal slides of the F2 and F2BC1hybrid progenies between sugarcane and E. fulvus( 2n = 20) and those of parental materials were prepared with the wall degradation hypotonic method,to further analyze the chromosomal transmission in the F2 and F2BC1hybrid progenies and to investigate the chromosome transmission mechanism.[Result]The results showed that,somatic chromosome number varied in various hybrid progenies; chromosomes from parents were transmitted into the somatic cells of F2 hybrids in " 2n + n" pattern and transmitted into the somatic cells of F2BC1 hybrids in " n + n" pattern.[Conclusion]This study provided a preliminary cytological basis for further use of these materials in sugarcane breeding.