Vegetative Propagation A method of plant propagation( asexual) not through pollination or seeds or spores but by way of separating new plant individuals that emerge from vegetative parts, such as specialized stems, leaves and roots and allow them to take root and grow. . 2 Types.
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A method of plant propagation( asexual) not through pollination or seeds or spores but by way of separating new plant individuals that emerge from vegetative parts, such as specialized stems, leaves and roots and allow them to take root and grow.
ARTIFICIAL VS NATURAL
Natural is when nature does it( generally seen in perennial plants), and artificial is with a little help from man.
Natural Propagation includes:
Corms: ( each year more and more corms grow around the original…must be separated or they will choke) gladiolas and crocus
Tubers: ( come from underground stems) potatoes
Stolons: ( horizontally above ground stems with tiny leaves from which new plants grow)
strawberries are an example
Scaly bulbs: ( similar to corms but much larger) onions, garlic, daffodils
Tip layer: arching shoots that ultimately touch-down onto the soil ex. Blackberries
Root sprouts( suckers): The roots of most plants produce cytokinins. As these accumulate in the roots, the cytokinins induce shoot formation. Near the base of the shrub, a new shoot will begin to grow. Ex. Red raspberries and most bushes
Leaf cuttings: clone plants by taking a piece and putting it in water or moist soil
Stem cuttings: faster than leaf cutting. Place stem piece in water and soon it’s sprout and you plant it.
Tissue Culture: designed to make thousands from one small clipping. Clipping is placed into a tissue culture containing nutrients and water. Sprouts quickly.
Grafting/ Budding: both are means of asexual propagation that join different plant parts as one. There are many types and the type depends on the reason for grafting.
Reasons may be: develop a plant with inadequate root systems
stronger stem of one grafted to another for better fruit
or flower production
**** IN THE NAME OF SCIENCE… NEW AND BETTER FRUITS, VEGGIES AND FLOWERS
Table 18.2 Modes of Vegetative reproduction with examples
Mode of Reproduction Specialised plant Examples
(A) Natural Methods
(a) Roots :Asparagus,
(b) Stem :(a) Runner Lawn grass,Sucker Mint, Onion,
(c) Bulb: Onion
(d) Tuber: Potato, Canna
(e) Rhizome :Ginger
(c) Leave Buds: Bryophyllum
(d) Special Parts: Bulbil Oxalis,Pineapple Onion
(B) Artificial Methods
(a) Cutting: Rose, Money Plant
(b) Layering :Jasmine,
(c) Grafting :Grape vine, apple trees
(d) Tissue Culture: Citrus, Mango, Orchids, Chrysanthemum, Asparagus.
A number of commonly cultivated plants are usually propagated by vegetative means rather than by seeds. This is a listing of such plants:
African violets — leaf cuttings
Apple — grafting
Avocado — grafting
Banana — sucker removal
blackberries (Rubusoccidentalis) — stem cuttings
Peach — grafting
Citrus (lemon, orange, grapefruit, Tangerine) — grafting
Date — sucker removal
Fig — stem cuttings
Grapes — stem cuttings, grafting
Hops — stem cuttings
Manioc (cassava) — stem cuttings
Maple — stem cuttings, grafting
Nut crops (walnut, pecan) — grafting
Pineapple — stem cuttings
Pear — grafting
Plum — stem cuttings
Poplar — stem cuttings
Potato — stem (tuber) cuttings
Garden strawberry — runners (stolons)
Sugar cane — stem cuttings
Tea — stem cuttings
Vanilla — stem cuttings
Verbena — stem cuttings
Willow — stem cuttings