SANDRA ROSEROLL NO :28, S4.B.ARCH

PROPOGATION OF PLANTS?

THE PROCESS OF CREATING NEW PLANTSThe creation can be from various sources: such as- seeds,cuttings, bulbs and other

parts. Plant propogation can also refer to the

artificial or natural dispersal of plants.

PROPOGATION OF PLANTS

Propogation can be mainly of two types. They areas follows ;

Sexual propogation ( seed)Asexual propogation

Sexual propagation Asexual propagation

Seeds and spores are mainly used.

Genetic recombination may occur.

Plant produced are not identical to the parent plant.

Plant parts like root, stem and leaves are used.

Plants produced from a single parent.

Plants produced are identical copies of parent plant.

TYPES OF PROPOGATION

ASEXUAL PROPOGATION

Plants have a number of mechanisms for asexual or vegetative reproduction. Some of thesemethods have been taken by the horticulturists (gardeners)to MULTIPLY OR CLONE plants rapidly

Plants are produced from a single parent and no exchange of genetic materialtakes place.

People also usevarious methods, which plats do not use, such as- tissue culture and grafting.

GRAFTING

GRAFTING

A horticulture technique in which tissues from one plant is inserted into those of another such that , two sets of vascular tissues join together.

This type of vascular joining is known as INOSCULATION

In most cases, two plants are selected for grafting;

1.Plant selected for its root is known as ROOTSTOCK.

2.Plnat selected for, stem, flower, leaves etc known as SCION

GRAFTING

In stem grafting , a shoot of a desired plant is grafted nto the stock of another type.

In bud grafting, a bud is grafted onto the stem of another stock plant ,it is encouraged to grow by prunning off the stem of the stock plant.

FOR A SUCCESFUL GRAFTING? Vascular cambium tissues of stock and scion must

be placed in contact with each other.Both tissues must be kept alive, until the graft has

taken.

GRAFTING

GRAFTING

ADVANTAGES OF GRAFTING

1.PRECOSITY: The ability to induce fruitfulness without need of completing juvenile phase.

2.DWARFING:Combination of characterestics in the scion

3.EASE OF PROPOGATION: Effective in the case, when certain scions are difficult to propogate.

4.HYBRID BREEDING : Grafting can reduce time of flowering and shorten the breeding program.

5.HARDINESS:Roots of stock plants can resist difficult conditions.

6.STURDINESS:Provides strong , tall trunk.7.DISEASE/PEST RESISTANCE8.POLLEN SOURCE9.REPAIR: Through bridge grafting, we can

connect tissues , so that a nutrient flow can be ensured to the damaged tissues from the roots.

10.CHANGING CULTIVARS : Its easy to graft a new cultivar onto the existing limbs of established to make it a profitable cultivar.

PRUNING

PRUNING

PRUNING

PRUNING?

It’s a horticulural practise involving the removal of selective plant parts such as branches ,buds , leaves .

Pruning is done : for the removal of deadwood ,shaping(directing growth), improving or maintaining health, reducing risk of falling branches, preparing nursery specimens etc.

Specialized pruning practices are applied to certain plants such as roses , fruit trees, grapevines etc.

TYPES OF PRUNING

ThinningToppingRaisingReduction

CUTTING

CUTTING

CUTTING ?

It’s a technique in which a piece of the stem or root of the source plant is placed in a suitable medium such as moist soil, potting mix, coir, or rock wool.

The cutting produces new stem, roots and thus a new plant independent of the parent plant,

Its also known as cloning, striking etc.

CUTTING

TYPES OF CUTTINGS

Stem cuttingsRoot cuttingsScion cuttingsEye cuttingsLeaf cuttings

IMPROVING RESULTS

1.By providing right soil : pH value 6-6.5, humus to increase nutrient load, sand or gravel to increase soils water permeability.

2.By providing the right humidity :The soil below and from the cuttings themselves is kept moist , and should be aerated once in a while to prevent formation of molds.

Even plastic bottles are also used to provide right humidity level.