摘要
In this study,silkworm strain T6,tolerant to fluoride,and silkworm strain 733xin,highly sensitive to fluoride,were used to construct the near-isogenic lines.300 random primers were used in RAPD amplification to DNAs of these lines.A molecular marker named S207 was found linked to the fluoride tolerance gene.Examination to F 2 segregated individuals of the above lines verified that this molecular marker was reliable.Subsequently,the molecular marker was cloned into a T vector (pUCm-T) for sequencing.Comparing with sequences available in the GenBank showed that this molecular marker was novel.We plan to convert it into a SCAR marker to facilitate establishment of a molecular marker assisted breeding system.
以家蚕耐氟品种T6和高敏感品种 73 3新为材料 ,并构建其近等基因系 ,采用 3 0 0个随机引物进行RAPD扩增 ,获得了与家蚕耐氟性有关的一个分子标记S2 0 7,并在F2 代分离个体中得到验证 ,证明了此分子标记的可靠性 ,进而将此标记克隆进T载体pUCm T中 ,完成了测序 ,分析发现此序列是新的未有报道的序列。计划下一步将此RAPD标记转化成SCAR标记 ,建立分子标记辅助育种技术体系。
基金
江苏省农业高新技术项目 (BG2 0 0 1 3 1 7)
国家财政部家蚕功能基因组计划技术平台建设项目~~
