The genomic fragment, designated as BccLH, homologous with the BcpLH gene of Chinese cabbage was isolated from the total genomic DNA of Pac-choi by PCR method, with a pair of primer designed according to the sequence of BcpLH.

• 根据大白菜BcpLH基因设计一对引物，以小白菜基因组DNA为模板，进行BcpLH同源基因扩增，扩增产物命名为BccLH基因。