Wednesday, July 1, 2015

Natural Vegetative Propagation

Natural Vegetative Propagation:
 Vegetative propagation occurs naturally in several ways.
Natural Vegetative Propagation

Bulbs
Bulbs are short underground stems surrounded by thick, fleshy leaves that contain stored food. Adventitious roots emerge under the base of bulb while shoots emerge from the top of the base. Tulips, onions and lilies reproduce by bulbs.

Corms
Corms are short and swollen underground stems contain containing stored food. Buds are present at the top of corm. From a bud, Shoot grows and forms a new plaht. Dasheen and garlic reproduce by corms.

Rhizomes
Rhizomes are horizontal underground stems with scale leaves. There are enlarged portions called nodes on rhizome. Buds are produced at nodes. The buds present on the upper surface of rhizome give rise to shoot. The lower surface of rhizome produces. Ginger, ferns and water lilies reproduce by rhizomes.

Stem Tubers
Stem tubers are the enlarged portions of an underground stem. There are aggregations of tiny buds in the form of “eyes” along the surface of tuber. Each bud develops into shoot that grows upward and also produces roots. Potatoes and yams reproduce by tubers.

Suckers
Suckers are lateral stems close to ground level. A suckers grows underground from some distance and then turns up, producing the new plant. Mint and Chrysanthemum reproduce in this way.

Vegetative propagation by leaves is not common and is seen in plants such Bryophyllum (patherchut). This plant has fleshy leaves and adventitious buds are present at margins of leaves. When leaf falls on ground, the buds grow into new plants.

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