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组织培养是人们从植物的植株上切取枝条、芽或根等组织,放在培养基上进行离体培养,使其分化出新的根、芽而成为一个完整的植株的一种方法。由于是离体培养,因而也叫做离体培养繁殖法或微量繁殖法。对于用一般育苗方法难以成苗的树种以及新引进或培育的林木良种,用此法在短时间内可以培育出大量苗木,同时还可以避免带入病虫。美国西北林区的韦尔豪泽公司用组织培养法培育花旗松苗木已获成功。据称,用这种苗木营造优树用材林,不但材性好,而且木材生长量可增加2～3倍。组织培养法育苗的优点是:(1)时间短。从组织切片到培养成苗不超过10～13
Tissue culture is the method by which people cut branches, buds or roots from plants and cultured them in vitro to differentiate new roots and buds into a complete plant. Because it is cultured in vitro, it is also called in vitro culture or micropropagation method. For species that are difficult to grow into seedlings by general breeding methods and newly introduced or cultivated forest varieties, this method can produce large quantities of seedlings in a short period of time while avoiding the introduction of pests and diseases. Weirhauser, a company in Northwestern USA, succeeded in cultivating Douglas-fir seedlings by tissue culture. Allegedly, with this seedlings to create superior tree timber, not only good material, and timber growth can increase 2 to 3 times. The advantages of tissue culture nursery: (1) a short time. From tissue sections to cultivate seedlings no more than 10 ~ 13