茶固有的杂合性,使在单个物种内识别茶的栽培品种日趋困难.茶树育种中因缺乏可靠的选择标记而延缓育种进程.以往,茶树育种是根据表型估计基因型,但表型的特征受环境影响,不能作为选择的可靠手段.利用稳定的遗传标记有助于选择优良的茶树栽培品种. The inherent heterozygosity of tea has made it increasingly difficult to identify cultivars of tea within a single species. Tea plantation delays the breeding process due to the lack of a reliable selection marker. In the past, tea tree breeding was based on phenotyping to estimate genotypes but phenotypic Features are not affected by the environment and can not be used as a reliable choice. The use of stable genetic markers helps to select good tea tree cultivars.