茶区内茶树品种的遗传多样性低于总体水平，江南和华南茶区主栽无性系品种的多样性高于西南茶区。
Diversity of clonal cultivars within tea area was lower than that of in whole nation . The levels of diversity in Tea Area of Jiangnan and South China were higher than those of Southwest China .
西南茶区