The invention provides a method for cultivating
polygonum cuspidatum seedlings, which comprises the steps of cultivating aseptic seedlings, cultivating multiple shoots, cultivating strong seedlings, rooting,
acclimatization and transplant. During the step of cultivating aseptic seedlings, a
polygonum cuspidatum tender stem /
shoot is adopted as an explant. The
polygonum cuspidatum tender stem /
shoot is sterilized by
alcohol, disinfected by 0.05-0.15% of HgCl2, rinsed by
sterile water, inoculated in a 1 / 2 MS or an MS with
a moderate amount of
plant growth hormone, and cultivated for 12-18 days to obtain aseptic seedlings. During the step process of cultivating multiple shoots, an already grown aseptic
seedling is
cut off, inoculated in a multiple
shoot culture medium prepared through adding
a moderate amount of
plant growth hormone in a 1 / 2 MS, and cultivated. During the step of strong
seedling cultivating and rooting, when multiple shoots are grown to about 1 cm in size, the multiple shoots are inoculated into strong
seedling culture media and rooting culture media, grouped in bottles and cultivated, where in the culture media are pared by 1 / 2 MS and / or MS with
a moderate amount of
plant growth hormone. The above steps are conducted at the cultivating temperature of 15-30 DEG C and under the illumination intensity of 2000-3000
LUX, wherein the illumination time is 6-12 hours / day. During the step of
acclimatization and transplant, regenerated plants from root cultures are transplanted in a matrix composed of garden soil and
peat in the ratio of 2:1, shaded by a shading net, and grow out of the matrix after being cultivated at the
humidity of 60-70% for 15-30 days. According to the invention, the
growth speed and the plantation benifit of
polygonum cuspidatum seedlings are greatly improved. meanwhile, the method is low in cost, small in
pollution, simple in process, applicable in all seasons and suitable for large-scale culture of seedlings.