茶树是异花授粉作物,自花授粉受精率极低,是一个随机交配的群体。因此,茶树自然杂交后代群体中,常会出现遗传变异。如果其中有符合育种需要的基因型,加以选择和试验,则可省去人工创造变异(如人工杂交、诱变等)这样繁重的工作环节,而直接进入育种试验程序。茶树选择育种(系统选种),就是从茶树自然杂交后代群体中,选择符合育种目标 Tea tree is cross-pollinated crops, self-pollination fertilization rate is very low, is a random mating population. Therefore, the natural hybridization of tea tree populations, genetic mutations often occur. If there are genotypes in line with breeding needs, to be selected and tested, you can save the manual labor-induced variation (such as artificial hybridization, mutagenesis, etc.) such a heavy work processes, and directly into the breeding program. Tea tree selection breeding (system selection), that is, from the natural hybridization of tea tree groups, choose to meet the breeding goal