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1. SCIENCE FORM 3 CHAPTER 4.12
VEGETATIVE REPRODUCTION
Group member:
Nikkie Koh
Ong Siew Fong
Chin Ying Zhen
Koay Jia Xuan

2. definition
 Vegetative reproduction in plants is defined as a type of asexual
reproduction.
 Does not involve gametes
 Vegetative reproduction is also defined as the production of new plantlets
from the vegetative parts (leaf, stem, roots) of a parent plant.

3. TYPES OF
VEGETATIVE
PARTS
Vegetative parts—LEAVES

4. Leaves
 Buds that grow at the edge of the leaf will grow into new plants
 Example : Begonia ,Bryophyllum
Begonia leaves

5. TYPES OF
VEGETATIVE
PARTS
Vegetative parts—
STEMS
runners
rhizomes
tubers
suckers
corms

6. Runners (runner is also call stolon)
 A stem that sprouts from an existing stem and grows horizontally on the
surface of the soil.
 New plants grow from the node tip.
 Example : Grass , strawberry

7. Rhizome
 A root-like stem, which is the main stem/ underground stem, that can grow
horizontally or other directions underground.
 Example : lotus , ginger

8.  Underground stem that produce new shoots from buds or eyes.
 Example : potato ,dahlia
Tubers
Dahlia pinnata
is the national
flower of Mexico

9. Corms
 A short ,vertical ,swollen underground stem.
New shoots from the buds located on the top of
the corm.
 Example : cocoyam ,banana

10. Suckers （吸芽）
 New shoots that grow from underground stems
 Producing upright shoots
 Example : banana ,pineapple

11. Onion bulb
Lily bulb
tulip bulb
Bulbs
 A short stem with fleshy leaves. New shoots arise from buds in the axils
of the fleshy leaves.
 Example : Onions ,lily ,tulip

12. TYPES OF
VEGETATIVE
PARTS
Vegetative parts—ROOTS

13. root
Roots
 Adventitious buds are formed from the root. These buds detach from the
root and develop into new plants
 Example : carrot ,sweet potato

14. vegetative reproduction or vegetative propagation
 Grow much faster than those
grow from seeds.
 Fruit are produced in shorter
period of time.
 Does not require agents of
pollination.
 Does not involve gametes
 No variation
 Overcrowding and competition
for space ,nutrients and sunlight
between the new plants and the
parent plants
advantages disadvantages

15. THE APPLICATION OF
RESEARCH ON
VEGETATIVE
REPRODUCTION IN
ALGRICULTURE

16. Stem cuttings (切茎法)
 Most commonly used method of vegetative propagation.
 A stem cutting is a portion of a stem that includes one or more nodes
removed from a parent plant and capable of rooting.
 The cutting is then planted in the soil. Adventitious roots will grow from
the nodes after a few weeks.
 A stem cutting is used to grow a whole new plant ,which is know as
cloning.
 Example : rose ,sugar cane ,hibiscus ,tapioca

17. Marcotting
 A ring of bark of a healthy plant with internodes and buds is cut and
removed.
 The removed part is covered with moist soil and then wrapped with a
sheet of plastic ,cloth or coconut husk.
 When roots are formed ,the branch is cut from the parent plant and then
planted in the ground.

19. Tissue culture
 It is a technique in which new plants are produced from the tissues of
parent plants.
 The plant tissues are cultured in a petri dish (in vitro) containing
nutrients and rooting hormones. All preparations are done in a sterilised
condition.
 This technique produces plenty of new plants in a short time ,using
minimal space and can be carried out at anytime throughout the year.
 The young plant produced is genetically alike as the parent and is known
as clone.
 Example : paddy ,banana , orchid ,tomato ,oil palm