The invention belongs to the technical field of
plant tissue culture, and particularly relates to a grape
stem cell separation, culture and identification method based on stem tip
meristem. Aiming at the problems that the existing grape
stem cell separation steps are complicated, the induction efficiency is low and a standardized identification method is lacked, the method is realized by the following steps: collecting terminal buds or immature embryos of grapes, sterilizing, and screening and separating stem tip
meristem tissues by using a
sucrose solution; inoculating to an induction culture medium (containing
gibberellin,
kinetin, indoleacetic acid and other components), carrying out dark culture at 22 DEG C for 20-30 hours, and carrying out two-stage
filtration to obtain the embryonic stem cells; then carrying out enlarged culture in a
liquid culture medium (containing 2, 4-dichlorphenoxyacetic acid,
gibberellin,
kinetin and the like) for 20 days; and finally, detecting the expression quantity of WUS and CLV3 genes through qRT-PCR (quantitative real-time
polymerase chain reaction), and verifying the characteristics of the stem cells by taking EF1a as an internal reference. According to the method, the
induction time is remarkably shortened, the
pollution risk is reduced, a
molecular level identification standard is established, the method is suitable for the field of grape
germplasm resource preservation and breeding, and an efficient and
universal solution is provided for a
plant stem cell technology.