The invention discloses a method for improving a
survival rate of the initial culture of
passiflora caerulea. The method comprises the following steps: (1) initial culture medium preparation; (2) explant cultivation: selecting
passiflora caerulea branches,
cutting the branches into stem segments containing 1-2 buds,
cutting off part of leaves, performing cuttage into a
seedling-raising pot, performing placing into a
greenhouse, spraying sterilization, desinsection and
virus prevention and control medicines once during cuttage, spraying the sterilization, desinsection and
virus prevention and control medicines once every 5-10 days, and taking the branches as explants for
tissue culture after cultivation for a period of time; (3) explant disinfection:
cutting leaves of the branches, cuttingthe branches into multiple segments, wherein axillary buds are located in the middle of the stem segments, and performing disinfection with a
disinfectant containing HgCl2 and
ascorbic acid; and (4) explant
inoculation and culture. In the method, an explant material is cultured, the material is placed in the
greenhouse for culture, pre-sterilization and other treatments are performed, the cleanliness of the explants is improved, and an HgCl2 disinfection time is shortened, so that a
pollution rate of the initial culture is reduced to 15% or less. A
browning rate of the explants is reduced, anda
survival rate is increased.