Breeding methods of Petunia

Growth habits of Petunia: native to Argentina, South America. Sex likes warm, cold-resistant, hot, dry and sunny summer blossoms. Avoid rain and waterlogging, good drainage and loose, fertile, slightly acidic soil. The seeds are very small and the germination rate is 60%.

Propagation and cultivation: sowing or cutting. The sowing time depends on the flowering time needed. If it needs to bloom in May, it should be sown in the greenhouse in January. Flowers in October need to be sown in July. The sowing time should also be adjusted according to different varieties. There is no need to cover the soil after sowing, just press it gently and germinate in about 10 days. When true leaves appear, the suitable room temperature is 13 ℃-15 ℃. Cutting and indoor cultivation can be carried out all the year round. After anthesis, the germinated tip twigs are cut, 10cm is grown, and inserted into the sand bed. The soil temperature is 20-25 degrees, rooting takes place 15-20 days after planting, and it can be transplanted into the pot in 30 days. The growth temperature is 10-30 degrees. When 3-4 true leaves are transplanted, the heart is picked once after planting. The flowering period of sowing in early autumn is the longest, and the flowering period is from April to October.

The growth temperature is 10-30 degrees. When 3-4 true leaves are transplanted, the heart is picked once after planting. The flowering period of sowing in early autumn is the longest, and the flowering period is from April to October.

Culture methods of Petunia

Petunia, also known as Bidong eggplant, Ganoderma lucidum peony, hybrid bump feather Chaoyan. Perennial herbs of Solanaceae.

Morphological characteristics: the plant height is 20-60, and the whole plant has sticky hairs. Stem slightly erect or recumbent. Leaves ovate, entire, almost sessile, upper opposite, lower much alternate. Flowers solitary; leaf axils or stem apex; calyx 5-parted, Corolla funnelform, apex undulate-lobed. There are many cultivated varieties, the flower type is changeable, there are single valve type and double valve type, the petal margin is wrinkled or irregular sawtooth; the color of the flower is white, pink, red, purple, yellow, brown to almost black and various markings. It can be divided into small flower, medium flower and large flower, and the diameter of large flower can reach more than 10 cm. Capsule, seeds small and many.

The growth habit is native to South America. Sex likes warm, not very cold-resistant, the Yangtze River basin in the greenhouse, closed balcony can survive the winter, blooming, open from late spring to autumn. Avoid rain and waterlogging, like the slightly acidic soil with good drainage and loose drainage, which requires sufficient sunshine. There are often rare leaves and flowers in cool weather.

Breeding method

Sowing method: the seed of petunia is very small, sowing method and maintenance are proper, the germination rate can reach more than 60 ^. Methods the sowing method of fine seeds was referred to. It can sprout after 7-10 days after sowing.

Cutting method: petunia cutting should be carried out in the period from late spring to Meiyu when the temperature is not very hot, it is easy to take root and survive, and it can also be cut after autumn is cool. the method can be operated according to the soft wood cutting method, except that the first watering can be slightly larger after cutting. later watering should be sprinkled frequently and less watering, otherwise the branches inserted into the underground part are easy to rot and die.

Cultivation and maintenance of early spring seedlings in the Yangtze River basin are often sown in plastic sheds or closed balconies in mid-March, and seedlings should be planted in greenhouse and other protective facilities for overwintering cultivation in autumn. Petunia is easy to lodge, so the seedlings should be plucked once or twice in the peak growth period to promote early branching; at the same time, pay attention to the moisture should not be too large, facility cultivation should also strengthen ventilation. It is necessary to increase the application of phosphorus and potassium fertilizer before flowering, renew and prune timely after flowering, and remove abortive flowers in order to achieve the effect of robust growth and long flowering period.

There are few diseases and insect pests in petunia. The common diseases are mainly virus diseases, which often occur in high temperature and humid seasons. the diseased plants often appear leaf shrinkage and yellowing, slow plant growth and serious death. Prevention and control methods: timely removal of diseased plants and destruction, in order to reduce the source of infection.

Petunia for horticultural use is large and colorful and is often used in flower bed layout; large flower double varieties are often used as potted plants; lying varieties are used either as flower vegetation or as hanging potted plants for ornamental purposes.

What is the breeding method of Petunia?

Petunia can be regarded as one of the plants that must be farmed. Do you know anything about it? Next, let's talk about the breeding methods of petunia.

Introduction to Petunia:

Petunia, also known as Bidong eggplant, is a perennial herb, often cultivated in 2012. Usually, the petunia stem is 20 to 45 cm tall, its stem is creeping and covered with sticky pilose, its leaves are soft, ovate, alternate, and the upper leaves are opposite. Petunias have flowers and have a long flowering period. when petunias blossom, petunias are alternate and funnel-shaped double petals with rich colors, such as white, purple or various reds. Petunia is very beautiful, like a blossoming trumpet flower, very gratifying.

The breeding methods of petunia:

1. Sowing and raising seedlings

In general, the method of sowing is adopted in petunia breeding. Petunia is a kind of plant that is easy to raise and can be sown and propagated all the year round. In order to control the florescence of petunia, some people usually choose to sow seeds from October to November or June to July in order to control the florescence of petunia on May Day or National Day. Install the medium before sowing, pour water thoroughly, and wet the seeds with fine spray after sowing. Pay attention to the indoor temperature after sowing to keep the medium temperature 22: 24 ℃, and when the seeds are finished, there is no medium above the seeds, otherwise seed germination will be affected. After about 4 or 7 days, the seeds can germinate and emerge.

2. Transplant upper basin

After the emergence of petunia seeds, the next step of transplanting can be carried out. First of all, the seedlings are raised in a seedling tray, if the petunias sown in autumn need to be moved into a 13-centimeter nutrition bowl, and if they are sown in spring, they are moved into a 10-centimeter nutrition bowl. Of course, you can also choose to customize the seedbed, and then move the petunia into the nutrition bowl. If petunia seedlings need to be planted, they can be moved into the hole plate first, and the seedlings can be formed in plastic pots with a diameter of 13 cm or slightly larger, and then put on the pot after a period of time. After the pot, we need to pay attention to the careful breeding of petunia.

3. Cultivation and management

Petunia is a sunny plant. It needs plenty of light and temperature to grow every day. Petunia can withstand high temperature, but not cold. When the temperature is lower than 15 degrees Celsius, flowering will be delayed, so special attention should be paid to temperature control during breeding. At the same time, we should also pay attention to the watering items of petunia, generally follow the principle of no dry and no watering, watering thoroughly, no more watering, no less watering, high temperature in summer, fast evaporation of water, can appropriately increase the amount of water, on the contrary in winter. In addition, in terms of fertilization, fertilization should be carried out according to the different needs of different periods, such as the flowering period, thin fertilizer should be applied frequently.