This presentation deals with the nursery techniques that are involved in the propagation of horticultural crops.

2. NURSERY TECHNIQUES AND PRODUCTION OF
HEALTHY PLANT MATERIALS
S.G.Mohanapourani,
2015006028,
I – B.Sc., Horticulture,
HC&RIW, TNAU, Trichy.

3. METHODS OF PROPAGATION
• Sexual method :
Raising of plants from the seeds.
• Asexual method :
Plants are obtained from the vegetative
portion of mother plant .

4. ASEXUAL METHODS OF PROPAGATION
• Cutting
• Layering
• Grafting
• Budding

5. CUTTING
• Plant parts such as stem , leaves or root is cut
from the parent plant and placed under
favourable condition to produce new plants.
Leaf cutting Stem cutting Root cutting

6. LAYERING
• Development of roots on the stem while it is still
attached to the parent plant.
• The rooted stem becomes a new plant
Simple layering Air layering

7. Compound layering Mound layering

8. GRAFTING
• Art of joining the parts of two independent
plants and thus producing a new plant.
Approach grafting Side grafting

9. Veneer grafting Epicotyl grafting

10. BUDDING
• A method of grafting in which only one bud
with a piece of bark with or without wood is
used as scion.
Chip budding Patch budding

11. Ring budding T budding

12. PROPAGATION THROUGH SPECIALISED
PLANT PARTS
BULB:
• Underground storage organ
• Produces bulblets
• Used for propagation
Onion

13. TUBERS
• Swollen underground stem
• Used as propagation material
Potato

14. RHIZOMES
• Specialized stem structures
• Propagation through lateral buds
Ginger

15. CORMS
• Swollen phase of stem
• Propagation through its bud
Colocassia

16. RUNNERS
• Specialized aerial stems
• Arise from the leaf axils
Strawberry

17. SUCKERS
• Shoots developed from adventitious bud on
root are suckers
Banana Pineapple

18. OFF SHOOTS
• Thick stems arising from the base of main
stems
Date palm