Lavender breeding methods include sowing, cutting, layering, and rooting. The main methods are cutting and sowing.
1. Seed breeding:
Lavender seeds are small and suitable for transplanting seedlings. Sowing period is generally selected in spring, warm areas can be carried out every year from March to June or from September to November.
Seed sowing from April to June, and sowing in winter in the greenhouse. The germination days are about 14 to 21 days. Germination temperature: 18 ~ 24 °C.
Appropriate lighting is required after germination, and weak light is easy to grow. Seeds should be soaked for 12 hours before sowing for a longer period of dormancy and then used with 20-50 ppm gibberellin.
Soak 2 hours before sowing. Before the planting, the land shall be flattened and irrigated. After the water seepage, the seeds shall be uniformly sowed, and then covered with a layer of fine soil, with a thickness of 0.2.
Centimeters, covered with grass or plastic film. Keep 15 to 25 °C, require seedbed moist, about 10 days that is the emergence of seedlings.
If you do not use gibberellin, it takes one month to germinate. It takes 1 to 3 months to germinate below 15°C. Pay attention to water spray at seedling stage, suitable when the seedlings are too dense
The seedlings can be transplanted when the seedling height is about 10 cm.
2. Cut propagation:
Cuttings are generally performed in spring and autumn. Summer tender cuttings are also available. The cutting medium can be mixed with 1/3 of the coarse sand and 1/3 of the peat moss. Choose to grow well
In the improved plants, the first half-lignified branches with short pitches and thick horns were selected, and the cuttings were cut at the top 8 to 10 cm.
The cutting incision should be close to the stem section, and strive to smooth, do not make the phloem rupture. Remove the leaves from the bottom 2 sections, insert the water for 2 hours and then insert it into the soil.
About 2 to 3 weeks will be rooting. Annual branch lengths of 8 to 10 cm can also be selected. When the water is well drained and kept moist, at a bed temperature of 20 to 24°C, about 40 days is left.
Right rooting. Do not use the budding cuttings that have appeared inflorescences, because the flowering branches have been aged and will have adverse effects on future growth.
Film cuttings, soil preparation do. After irrigating the film, immediately insert it. 5 to 8 cm deep, spaced 20 to 25 cm. Pay attention to increase the temperature and promote root hair growth
Equipping; Diligently trim extension branches, remove flower spikes promptly, promote branching, and cultivate strong seedlings. Planting distance 60cm, row spacing 120cm. Water immediately after planting.
3. Breeding:
Spring and autumn can be carried out, with 3-4 years old plants, in the spring 3-4 months with old roots divided into each plant with bud eyes.
Reasons for low seed germination rate of lavender seeds:
The seeds are dormant for a long time, the shell is hard and dense, the surface is waxy, and it is not easy for the water to expand and crack. At the same time, it hinders gas exchange and causes seed germination.
Difficulties, low emergence rate.
Seed processing:
1, wolfberry species: first with fine sand friction, making it slightly damaged
2. Soaking: Soaking seeds in warm water of 35-40°C for 12 hours can significantly increase the germination rate.
3. Growth stimulating hormone treatment: Gibberellin is a commonly used growth stimulant. It can be seeded earlier by soaking with gibberellin 20 to 50 mg/L for 2-3 hours.
Germination and increase germination rate, promote seedling growth and promote flowering. The number of germination days is about 14 to 21 days. If you do not use gibberellin, it takes about one month to germinate.
, It takes 1 to 3 months to germinate below 15°C.
Temperature control: The optimum temperature for seed germination is 18-24°C, which requires light.
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