Grade 5, Science Olympiad (CBSE) - Vegetative propagation 

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Grade 5  |   Science  |   Vegetative propagation, Living, non living things and Plants, Olympiad, CBSE, ICSE, SOF, ITO

Vegetative propagation

Vegetative propagation is a type of asexual reproduction where a vegetative part of the plant like root, leaf or stem is used to reproduce a new plant. The plant produced by vegetative propagation is identical to its parent.

Vegetative propagation can be natural or artificial.

Vegetative propagation by leaves: Plants like bryophyllum (kalanchoe) show vegetative propagation by leaves. Leaf of Bryophyllum bears small plantlets along its margin. These plantlets when are matured, fall off from the leaf and grow into independent plants. Other plants which propagate through Begonias, African violets and piggyback plants. 

 

Vegetative propagation by stem: 

Rhizomes: Rhizomes are underground stems. They grow horizontally across the ground. Plants which propagate through ginger, lily, iris etc.

Stolon: Stolons also known as runners are stems which grow just below the ground. Plants which grow through stolons are strawberries, currant etc.

Bulbs: They are swollen stems. Lilies and Tulips propagate through bulbs.

Tubers: They can develop from stems or roots. Potato propagates through stem tuber. 

Rose can reproduce sexually (means through seeds) or asexually with the methods of cutting or grafting.

Grafting: Upper part of the plant called scion is placed on the rootstalk of another plant. Apples, avocado, peach, pears and citrus fruits like lemons, oranges and grapefruits are grown by grafting.

Sugarcane is propagated by planting parts cut from mature canes. These parts are called setts.

Layering is the technique used to grow jasmine, rubber plants and crotons. In this method, a branch of the plant is buried under the soil. The branch is not detached from the stem. The branch starts developing roots. After some time it has roots to grow on its own. The new plant is now detached from the parent. E.g. climbing roses, rhododendron, honeysuckle etc.

Plants like sweet potatoes and dahlia propagate through root tubers.


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