The latest breeding methods of carnations

The reproduction of carnation is divided into asexual reproduction and sexual reproduction. Sexual reproduction tends to have low seed setting rate, great variation in seed progeny and slow growth of seedlings, so it is less used in production and a large number of asexual reproduction is used in production, mainly cutting propagation. Its advantages are rich cuttings, stable characters and quick results. Let's take a look at it.

Seed propagation of carnation

The germination temperature of carnation seeds should be about 20 ℃. The seeds should be sowed indoors in early spring or in the open field from September to October, and should be protected and overwintered in winter. The temperature should not be higher than 15 ℃ or lower than 0 ℃.

Carnation striping propagation

Carnation embossing is carried out from August to September, select long branches, cut the skin with a knife in contact with the ground, press the soil, and after 5 to 6 weeks, it can take root and survive.

Tissue culture of carnation

Tissue culture and propagation of carnation is an important means to produce virus-free plants. cut flowers are widely used in cut flower production, generally using stem tip for detoxification culture, and then a large number of propagation.

Cutting propagation of carnation

1. Selection of cuttings: select plants with no diseases and insect pests, strong growth and close internodes, with 3 pairs of unfolded leaves and 1 pair of unexpanded leaves, and the percentage of flower buds of population cuttings is less than 10%.

2. Cuttage adoption: cuttings are generally taken at the same time as the sprouting of carnations. Cuttings should be picked according to the standard, and sprouts should be broken by hand instead of scissors to avoid virus cross-infection. There should be a slight trunk cortex at the base, but the mother branch should not be damaged. 4-5 top leaves of the cuttings should be retained and the rest should be removed. After finishing into bundles, soak in water for 30 minutes to make the cuttings absorb enough water. The section should be close to the internodes and treated with growth regulators in order to improve the survival rate and emergence rate.

3. Cuttings storage: storage of cuttings can provide great convenience for year-round seedling cultivation and balanced flower supply throughout the year, and can be operated in batches at one time to save manpower and material resources. The storage temperature is 1: 2 ℃, and the smaller the variation, the better, the better. The cuttings are treated with water loss slightly before storage, and the cuttings are packed with ultra-thin plastic film.

4. Cutting time: generally, we should avoid the hot summer from July to August, require good cutting quality, use perlite with larger particles as the cutting parent material, good water quality, and the cutting bed is a table.

5, cutting method: when cutting, it is appropriate to insert 1 cm of medium, and deep cutting in summer, generally 1.5-2 cm. After cutting to spray enough water, later control should not be too wet, so as not to rot the root.

6. Cutting management: the cutter should have intermittent spraying facilities, and the spray amount should be controlled to make the leaves just wet. If there is no spray, cover the plastic film and use the Reed curtain after 1 week, but do not block too much light to prevent overgrowth. Transplant when the root of the cuttage is 1 cm long, pay attention to less root damage.