Asexual Reproduction

Budding is a method of grafting in which the scion is a single bud rather than a piece of stem or twig. Many of the same conditions and materials used for other forms of grafting also apply to budding. It is most frequently used to multiply a variety that cannot be produced from seed. It may also be used for top working trees that cannot be easily grafted with cleft or whip grafts.

Don’t put tender seedlings outdoors on windy days or when temperatures are below 45 degrees F. Reduce the frequency of watering to slow growth, but don’t allow plants to wilt. Even cold-hardy plants will be hurt if exposed to freezing temperatures before they are hardened. After proper hardening, however, they can be planted outdoors and light frosts will not damage them.

Insert cuttings into a rooting medium such as coarse sand, vermiculite, soil, water, or a mixture of peat and perlite. This method involves sprouting the seeds before they are planted. This reduces the time to germination, as the temperature and moisture are easy to control. A high percentage of germination is achieved since environmental factors are optimum. Lay seeds between the folds of a cotton cloth or on a layer of vermiculite in a shallow pan.

What Are Some Forms Of Plant Propagation?

Grafting – Grafting is propagation by combining a scion of one plant and connecting it to the stock of another. This form of propagation is primarily used with woody plants. There are many forms of grafts that can be done for many purposes. A few examples of these grafts are the cleft, tongue, and saddle graft. Budding is the process of taking the bud of one plant and grafting it on to another. Whip and tongue grafting—This method is often used for stems ¼-inch to ½-inch in diameter.

Cold stratification (moist-chilling) involves mixing seeds with an equal volume of a moist medium in a closed container and storing them in a refrigerator. Periodically, check to see that the medium is moist but not wet. The length of time required to break dormancy varies by species; check reference books for recommended times.

Prepare the base of the scion by cutting inward 1-1/2; to 2 inches from the base, then downward, forming a shoulder and long, smooth cut . The long cut should extend about one-third through the twig, keeping its base strong enough to insert but not too thick. On the side opposite the long cut, make a short cut to give the base of the scion a wedge shape for easier insertion.

Other polycarpic species, such as perennials, flower several times during their life span, but not each year. By this method, the plant does not require all its nutrients to be channeled towards flowering each year. The plant part often gives rise to an undifferentiated mass, known as a callus, from which, after a period of time, individual plantlets begin to grow. These can be separated; they are first grown under greenhouse conditions before they are moved to field conditions.

Plant Life Spans

Many plants—like ginger, onion, gladioli, and dahlia—continue to grow from buds that are present on the surface of the stem. In some plants, such as the sweet potato, adventitious roots or runners can give rise to new plants . In Bryophyllum and kalanchoe, the leaves have small buds on their margins. When these are detached from the plant, they grow into independent plants; or, they may start growing into independent plants if the leaf touches the soil.

Sand occurs in different grades; sharp builders’ sand is best for propagation. Sterilize sand before using it; sand may contain various disease pathogens, weeds, and weed seeds. Vermiculite is a sterile, lightweight medium produced by heating a type of clay to 2000°F.

What Is Plant Propagation

Rooting can take anywhere from a few days to several months. Some of these include seeds, cuttings, layering, and division. Of these types of plant propagation, there exists various forms. These might include different types of cuttings in addition to several methods of layering or dividing plants. Chip budding—This method can be used when the bark is not slipping. Although all the basics in handling budwood and stock are the same for chip budding and T-budding, the cuts made in chip budding differ radically.

asexual propagation

Leaving the 1/2 inch of leafstalk as a handle can make insertion easier. It is important to insert the buds promptly as soon as they have been cut from the budstick. A knife may be used to lift the bark at the top of the slit, but this is not always necessary. Push the scion down and center it in the slit or between both slits if the double slit method is used. Insert the scion until the shoulder rests on the stub . If the scion is large enough, one or two small nails may be used to tighten the scion to the stock.

V Hardening Plants

This procedure results in an accumulation of carbohydrates and a thickening of cell walls. In addition, many homeowners find a variety of materials from around the house useful for containers. These homemade containers should be deep enough to provide adequate soil and have plenty of drainage holes in the bottom. Most plants transplant well and can be started indoors, but a few plants are difficult to transplant. These are generally directly seeded outdoors or sown directly into individual containers indoors.

asexual propagation

The best time for grafting is in the spring just as growth starts. Grafting techniques can be divided into four basic types, usually referred to as whip, cleft, bark and side grafting. The method selected is largely determined by the size of the stock and scion.

Seed Propagation Mat

Air layering can be used to propagate large, overgrown houseplants as well as some woody ornamentals such as camellias. The process varies depending on whether the plant is a monocot or dicot. For monocots, such as Dracaena fragrans ‘Massangeana’ , make an upward cut about one-third of the way through the stem.

asexual propagation

Seedling growing mixes and containers can be purchased or prepared similar to those mentioned for germinating seed. The medium should contain more plant nutrients than a germination mix, however. Some commercial soilless mixes have fertilizer already added. When fertilizing, use a soluble house plant fertilizer, at the dilution recommended by the manufacturer, about every 2 weeks after the seedlings are established. Remember that young seedlings are easily damaged by too much fertilizer, especially if they are under any moisture stress.

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This will prevent soft, leggy growth and minimize disease troubles. Some crops, of course, may germinate or grow best at a different constant temperature and must be handled separately from the bulk of the plants. Ideally, seed flats should remain sufficiently moist during the germination period without having to add water. One way to maintain moisture is to slip the whole flat or pot into a clear plastic bag after the initial watering. Keep the container out of direct sunlight; otherwise the temperature may rise to the point where the seeds will be harmed.