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Plant Propagation RM
Plant propagation terminology
| Question | Answer |
|---|---|
| What is agar? | It's a sugar-based gel derived from certain algae that is used as a nutrient-rich gel for tissue culture. It substitutes for the sugars that would normally be produced through photosynthesis. |
| What is asexual propagation? | The reproduction of new plants from the stems, leaves, or roots of a parent plant. No seeds are used. |
| What is budding? | It is like grafting, but the scion is reduced to a single bud with a small portion of bark or wood attached. The single bud scon is joined with the understock to form one new plant. This is done in the spring or fall. |
| What is callus? | Undifferentiated cell tissue. |
| What is callus tissue? | White tissue that forms over the wounded area or base of cuttings. This is where new roots sprout. |
| What is a clone? | Plants that are geneticall identical to the parent plant, and therefore have the same traits as the parent plant. |
| What is damping-off? | A common fungal disease which causes stems to rot at the soil line. The organisms that cause this are found in unsteralized media, containers, tools and benches. To control these use proper sanitation and avoid warm, wet medium. |
| What is direct seeding? | When seeds, such as vegetable and grass, are planted directly into the soil outdoors. This is done with plants that are difficult to plant individually, but the seeds germinate easily in the soil. |
| What is division? | The method in which parts of theplants are cut into sections that will grow into new plants naturall. Tulips, daffodils, lilies, and amaryllis reproduce this way. |
| What are explants? | In tissue culturing, these are the peces of plants that are grown on an artificial medium under sterile conditions. |
| What is plant propagation? | Refers to the reproduction of new plants from seeds or vegetatiove parts of a plant. It can be sexual or asexual. |
| What is sexual propagation? | The reproduction of plants with the use of seeds. This is often the easiest and least expensive means of plant propogation. |
| What are seedlings? | Plants grown from seeds are called seedlings. |
| What is the percent germination? | This is the percentage of seeds that will sprout and grow. This can be tested by placing a sample or small portion of seeds in an environment favorable for growth. |
| What is indirect seeding? | When seeds are planted indoors or in a greenhouse in flats or containers in a germinating medium, grow into seedlings, then are transplanted to larger containers or to a permaent location outdoors. |
| What is scarification? | When the seed coat is broken or softened to allow for germination. |
| What is stratification? | Some seed embryos, like elm seeds, have to experience a chilly period before they will germinatie to overcome dormancy. Seeds are placed in mosisted soil medium at temperatures betseen 32 and 50 F for a certain period of time. |
| What is damping-off? | A common fungal disease which causes stems to rot at the soil line. The organisms which cause this disease are present in unsteralized media, containers, tools, and benches. Proper sanatation helps prevent this. |
| What does it mean to harden-off? | Transplanting is a shock to seedlings. Before transplanting, seedlings need to have this done to them. They are placed in areas of cooler temperatures with less frequent watering to get them ready for their new location. |
| What is asexual propagation? | This is the reproduction of new plants from the stems, leaves, or roots of a parent plant. No seeds are used, just portions of the parent plant which are placed in soil, soilless media, or in test tubes with nutrient-rich media. |
| What are stem cuttings? | Contains terminal or lateral buds and are placed in growing medium in hopes that they will produce roots. |
| What is a leaf cutting? | Consists of a leaf blade or a leaf blade with a petiole attached. Many houseplants and foliage plants are propagated by this method. |
| What is a leaf-bud cutting? | Consists of a leaf, petiole, and a short piece of stem with the lateral bud. This is good when there is not a lot of woody plant material and many new plants are needed. |
| What are root cuttings? | Made from root pieces of young plants during late winter or early spring. Roots are duc, treated and cleaned and jut into pieces then placed in a growing medium. |
| What is grafting? | The process of connecting two plants or plant parts together that they will join and grow as one plant. |
| What is the scion? | a short piece of stem with two or more buds that has been grafted on to the understock. |
| What is the understock? | Also called the rootstock, this is the lower portion of the graft. |
| What is budding? | Similar to grafting, except the scion is reduced to a single bud with a small portion of bark or wood attached. |
| What is layering? | A simple method of asexual propogation in which roots are formed on a stem while it is still attached to the parent plant. Onlly a few plants can be produced from one parent. |
| What is separation? | A propagation metod in which these natural structures are removed from the parent plant and planted to grow on their own. |
| What is division? | A method in which parts of the plants are cut into sections that will grow into new plants naturally. |
| What is micropropagation? | A method of asexual propagation that involves taking small tissue or a group of cells from the parent plant and growing them on a nturient-rich agar to produce hundreds of new plants. |
| What is agar? | A sugar-based gel derived fally be produced in a plant's leaves through photosynthesis. would normsugars thatrom certain algae. This subsistitues for |
| What is tissue culture? | A method of growing pieces of plants, c alled explants, on an artifical medium under sterile conditions. |
| What are explants? | Explants are pieces of plants grown on an articial medium under sterile conditions using tissue culture. |
| What is a plantlet? | A plant created from an explant and grwon bby tissue culture. It has tiny leaves, stems, and roots that have not yet devloped into normal-sized parts like it's parent plant. |
| What is genetic engineering? | When scientists select and move genetic material from one plant to antoher. Genes can even be transferred from one species to another. |
Created by:
evakdoll
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