甘蔗与蔗茅回交BC1代材料的ISSR多态性分析

Sugarcane(Saccharum officenarum)is planted with only one or two cultivars in China. At the same time it is clonal propagation, the yielding can't be stable. Erianthus fulvus is a wild species with a lot of resistant characters can enhance sugarcane's qualities through hybridization. However, the heredity of sugarcane is diversity. Then take F1 backcross with the common cultivars. ISSR markers analysis on BC1 progenies that derived from intergeneric hybridization and their parents was performed. The result showed that totally 121 bands were amplified using 11 primers, among which 110 were polymorphic bands and the polymorphism was 90.91%, indicated that there are more broad genetic differentiation among the BC1 progenies; clustering result showed there was a trend that BC1 progenies were preferential cluster with female parents, indicated that genetic material of female parents were predominant in BC1 progenies.