PLANT REPRODUCTION
Part 1
Sexual
Reproduction
Sexual Reproduction
(การสื บพันธุ์แบบอาศัยเพศของพืช)
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Male
Sperm
Embryo
Egg
Female
New
Plant
Flower
Fruit
Structure of a flower: part of the plant that contains
the reproductive organs.
Stigma: part of the pistil that receives the pollen.
Style: central part of the pistil.
Ovary: lower part of the pistil which produces eggs.
Pistil: the set of female parts of a flower.
Receptacle: part of the flower to which the other parts are
attached.
Pedicel: the stalk supporting the flower.
Sepal: each parts of the calyx of a flower.
Petal: each parts of the corolla of a flower.
Filament: male reproductive organ of a flower.
Anther: part of the stamen that produces the pollen.
1) By Four Basic Component Reference
Complete Flower Structure
Stamen
1) By Four Basic Component Reference
Complete Flower Structure
Sample Picture Of Complete Flower Structure
1) By Four Basic Component Reference
Incomplete Flower Structure
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Sample Picture Of Incomplete Flower Structure
2) By Stamen & Carpel Component Reference
Perfect Flower
2) By Stamen & Carpel Component Reference
Imperfect Flower
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Self
Pollination
Pollination
Cross
Pollination
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Pollination is the process by
which pollen is transferred in plants
1.1 Self Pollination
Self pollination : Pollen is
transferred within flower itself
1.2 Cross Pollination
Cross flower but same plant
Cross pollination: Pollen is
transferred cross over flower
Generate Of Pollen Tube
Generate Of Pollen Tube
2. Fertilization
For the process of fertilization, tile pollen grains are
carried to stigma of ovary by wind or insects (pollination).
On the stigma, the pollen grains germinate to give out
tubular structures, the pollen tubes. Only one pollen tube
under the direction of pollen nucleus (tube nucleus) grows
down the style and enters the ovary. In the ovary, the pollen
tube makes its way through the micro-pyle of the ovule or
embryo sac. Both sperm nuclei pass through the pollen
tube and enter the embryo sac. Because the pollen tube
and pollen nucleus now have no function and degenerate.
Out of two sperm nuclei, one sperm nucleus unites with the
egg nucleus to form a zygote nucleus, which in later stages
develops into an embryo.
2.1Gametogenesis
2.2 Fertilization Process
1) Pollination
Pollination takes place immediately before the
anthesis. Anthers elevate by elongating the stamen
filaments, and untimately they go out the spikelet
during anthesis.
2.2 Fertilization Process
2.2 Fertilization Process
2.2 Fertilization Process
1) Pollination
2.2 Fertilization Process
2) Pollen Germination
The pollen left on stigma starts to germinate, to grow pollen
tube toward the egg cell.
Pollen tubes are the pathways for sperm to reach the egg.
2.2 Fertilization Process
3) Penetration of PollenTube into the Ovule
The pollen tube reaches the ovule.
It happens after the pollen tube starts growing.
2.2 Fertilization Process
4) Fertilization
2.2 Fertilization Process
5) Division of the Fertilized Egg (Zygote)
Fertilization is completed.
In the following morning, the fertilized egg
begins cell division to develop into an
embryo.
An embryo is a baby of the plant, which
is kept dormant in the seed until the right
condition for germination comes.
2.3 Changed After Fertilization
Egg+Sperm 1
Embryo
Ovary
Fruit
Ovary wall
Seed Coat or Fruit meat
Polar Nuclei+Sperm 2
Endosperm
Ovule
Seed
Integument
Seed coat
Antipodal & Synergid
Decompose
Carpel, Petal and other
Declined
4. Fruit
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Almost growth up from ovary after fertilization
but some fruit growth up from pollen activate or
hormone so none have seed
Simple fruit
Fruit
Aggregate fruit
Multiple fruit
4.1 Simple Fruit
Generate from one ovary and one flower
1) One ovule in ovary -> Single Seed of Simple Fruit
2) Several ovule in ovary -> Multiple seed of Simple Fruit
4.2 Aggregate Fruit
Generate several ovary in one flower -> One ovary
growth up be one fruit
1) Each ovary growth up be Each fruit on same sepals
2) Tighten ovary on sepals seem be simple fruit
4.3 Multiple Fruit
Generate from group ovary, each flower
have only one ovary -> Each ovary growth up be
each fruit and merge be same fruit seem be simple
fruit
Part 2
Asexual
Reproduction
1. Asexual Propagation
1) Shoot
1. Asexual Propagation
2) Root
1. Asexual Propagation
3) Leave
1. Asexual Propagation
4) Tuber
1. Asexual Propagation
5) Branch
2. Other Propagation
1. Layering
2. Budding
3. Approach Grafting
4. Tissue Culture
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