细胞学研究表明,一般茶树都是二倍体(2n=30)植株,但在自然群体中,不断发现不同染色体数目的变异体:Simura 1935年曾报道有天然三倍体茶树;此后Simura 1956年,Bezbaruach 1968年、1971年从不同的茶树品种中发现了天然三倍体;Eezbaruach 1971年从一种有一定结实率的三倍体后代中获得了许多单倍体和多倍体的幼苗;Venkataraman 1969年、Jagasuriya和Govindjulu 1971在三倍体后代中不仅发现有四倍体,还得到了非整倍体;志村乔曾在我国皋卢茶(日名唐茶)或其它中国 Cytological studies have shown that tea plants are generally diploid (2n = 30) plants, but in natural populations, different numbers of chromosomes are constantly found: Simura was reported as a natural triploid tea tree in 1935; Simura 1956 , Bezbaruach In 1968, native triploids were discovered from different varieties of tea trees in 1971; Eezbaruach obtained many haploid and polyploid seedlings from a triploid progeny with a certain seed setting rate in 1971; Venkataraman In 1969, Jagasuriya and Govindjulu 1971 found not only tetraploids but also aneuploids among triploid offspring; Shimura Joe had worked in Gaolu Tea (China Famous Tang Tea) or other China