Woody rootstock for efficient grafting of solanaceous vegetables and efficient grafting and seedling culture method thereof

A method for efficiently grafting and seedling culture of solanaceous vegetables, comprising:

• (a) accelerating germination and sowing scion seeds of solanaceous vegetables;
• (b) after the scion seeds grow into seedlings, taking a portion above cotyledon and cutting lower section into a wedge shape on both sides, and inserting the lower section into a split of a rootstock, and adjusting a position of sleeve to fix scion on the rootstock;
• and
• (c) planting the grafted seedlings into matrix and proceeding to cultivation management, wherein the rootstock is obtained by:
• (1) taking newly induced branches of Lycium barbarum or Lycium ruthenicum Murr. and sterilizing;
• (2) cutting the branches into small stems, inoculating into a bud induction culture medium for bud induction germination;
• (3) when the newly induced buds grow to 5 cm or more, cutting the buds into small stems, which are inoculated into a bud subculture propagation medium to establish a rootstock clone, wherein in the bud subculture propagation medium, WPM and MS in a volume ratio of 1:1 are used as a basic culture medium, sucrose and agar are added with the concentrations of 30 g/L and 8 g/L respectively, and the pH value of the bud subculture propagation medium is 5.8;
• (4) when the newly induced buds on the small stems grow to 3 cm or more, cutting at lower end horizontally, and inoculating into a rooting culture medium to make the buds grow into a complete plant, wherein in the rooting culture medium, a culture medium consisting of WPM and MS in a volume ratio of 1:1 are used as a basic culture medium, and sucrose, agar, IBA, NAA are added with the concentrations of 30 g/L, 8 g/L, 0.4 mg/L and 0.05 mg/L, respectively, and the pH value of the rooting culture medium is 5.8;
• (5) transplanting the complete plant into matrix for domestication;
• and
• (6) cutting off top end of the plant horizontally, removing leaves in an area of 2 cm below the flat cut, splitting the cut by 0.5 cm-0.8 cm to form a split, and sleeving the split, thus obtaining the rootstock which can be used for efficiently grafting solanaceous vegetables.