How to propagate cut roses? These propagation experiences are worth learning from
Cut roses mainly have three propagation methods: cuttings, grafting, and tissue culture.
1. Cutting propagation. It is mainly used for easy-to-root varieties, such as small-flowered types, which are suitable for cutting propagation. Some large-flowered varieties do not root easily, especially the yellow series and white series, which are difficult to root and are not often used. Spring and autumn are suitable for cutting propagation. For cuttings, choose thick branches that have flowered or have not flowered and are trimmed off. After cutting, keep them fresh promptly to prevent water loss. Cut the branches into 7-10 cm sections, with the upper cut close to the base of the lower bud at 0.1-0.3 cm. Remove the two leaves below the branch section, keep two leaves above, and keep 2-4 small leaves on each leaf, cutting off the rest. Then, directly below the lowest bud of the cutting, in the direction opposite the bud, make 1 diagonal cut at 45° with a blade, then dip it in 200 mg?M L of naphthalene acetic acid, insert it into the seedbed, with a depth of 1?M2-1?M3 of the cutting, at a plant-row spacing of 4-5 cm, firm the soil, and water thoroughly. The cutting bed substrate is best with vermiculite and perlite, covered with an arched shed to retain moisture and heat, at about 20°C. Roots can form after 15 days, seedlings can be transplanted after 30 days, and with strengthened light and fertilizer and water management, they become seedlings for later use.
2. Grafting propagation. Choose roses with well-developed root systems, vigorous growth, and strong disease and cold resistance as rootstock. The commonly used ones are Rosa multiflora var. cathayensis and wild rose. The rootstock is propagated by cuttings, and seedlings can also be used for grafting. Grafting usually uses bud grafting, branch grafting, and root grafting, etc.
3. Rapid propagation of roses by tissue culture. Take young stem segments as explants, use axillary bud culture and stem segments for subculture propagation, and rapidly propagate rose seedlings.