The latest breeding method of Pelargonium

Domestic geranium, also known as large flower geranium, foreign butterfly, etc., is a perennial herb of the family Pelargoniaceae, distributed in Africa and Hubei of the Chinese mainland. It has been artificially introduced and cultivated, with a florescence usually from July to August. Let's take a look at the breeding methods of geraniums.

Sowing and propagation of domestic geranium

The sowing and propagation of domestic geranium can be carried out in spring and autumn, and indoor pot sowing in spring is better. The optimum temperature for germination is 20-25 ℃. The geranium seed is not large, and the soil cover should not be deep after sowing, and it will germinate in about 2-5 days. It will sow in autumn and blossom in the summer of the following year. After sowing and propagation, excellent intermediate varieties can be selected and bred.

Cutting propagation of domestic geranium

The cutting propagation of domestic geranium can be cut except that the plant is semi-dormant from June to July, and it is better in spring and autumn. High temperature in summer, cuttings are easy to blacken and rot. The cuttings are 10 cm long, and the top part is the best, with vigorous growth and fast rooting. After cutting the cuttings, let the cut dry for several days, form a thin film, and then insert it into the sand bed or the mixed matrix of expanded perlite and peat, be careful not to hurt the bark of the cuttings, otherwise the wound will rot easily. After insertion, put it in a semi-shaded place and keep it at room temperature for 13-18 ℃. It will take root after 14-21 days. When the root length is 3-4 cm, it can be potted. Soaking the base of cuttings with 0.01% indole acetic acid for 2 seconds can improve the survival rate and rooting rate of cuttings. Generally, cuttings blossom in 6 months, that is, cuttage in January and flowering in June. It was cut in October and flowered from February to March the following year.

Tissue culture of domestic geranium

Domestic geranium can also be propagated by tissue culture, using MS medium as basic medium, adding 0.001% indole acetic acid and kinetin to promote callus and adventitious buds, and 0.01% indole acetic acid to promote rooting. Tissue culture provides a new way for improved variety breeding and repetition of new varieties of domestic geranium.