asexual reproduction in plants sereddy

8/22/2019 Asexual Reproduction in Plants SEREDDY

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S ESWARA REDDY


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Reproduction in Plants1. Sexual Reproduction

- Parts of a Flower

- Pollination- Fertilization

- Seed Dispersal & Germination

2. Asexual Reproduction- Natural Vegetative Propagation

- Artificial Vegetative Propagation


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1. Seed germination

2. Needs of a growing seed

3. Asexual Reproduction- Natural Vegetative Propagation

- Artificial Vegetative Propagation


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Asexual Reproduction(plants)
http://images.google.com.ph/imgres?imgurl=http://www.english-country-garden.com/a/i/flowers/rose-hip-1.jpg&imgrefurl=http://www.english-country-garden.com/flowers/dog-rose.htm&h=375&w=500&sz=44&hl=en&start=11&tbnid=mLFbwsh1XFFUVM:&tbnh=98&tbnw=130&prev=/images%3Fq%3Dflowers%26svnum%3D10%26hl%3Denhttp://images.google.com.ph/imgres?imgurl=http://www.free-pictures-photos.com/flowers/flowers-02.jpg&imgrefurl=http://www.free-pictures-photos.com/flowers/index.htm&h=940&w=1425&sz=1454&hl=en&start=8&tbnid=NEPVKlCzzot8UM:&tbnh=99&tbnw=150&prev=/images%3Fq%3Dflowers%26svnum%3D10%26hl%3Denhttp://images.google.com.ph/imgres?imgurl=http://www.toptropicals.com/pics/garden/c17/9858.jpg&imgrefurl=http://www.toptropicals.com/&h=416&w=500&sz=54&hl=en&start=3&tbnid=fgLihbiy8Y7WuM:&tbnh=108&tbnw=130&prev=/images%3Fq%3Dplants%26svnum%3D10%26hl%3Denhttp://images.google.com.ph/imgres?imgurl=http://www.yvg.com/wallpaper/geodesicnature-1280.jpg&imgrefurl=http://www.yvg.com/plants.shtml&h=960&w=1280&sz=697&hl=en&start=4&tbnid=xcHAXHJATXI5rM:&tbnh=113&tbnw=150&prev=/images%3Fq%3Dplants%26svnum%3D10%26hl%3Den


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Plants are

important part of

the environment

and our lives. In

fact, many of our

needs are being

sustained by the

different plants

around us.

Can you name

some important

things or needs

we get from

plants?


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Germination

Growing plant

Flowering plant

Pollination

Fertilization

Dispersal of seeds
http://www.bbc.co.uk/schools/scienceclips/ages/9_10/life_cycles.shtml


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Some plants don'tproduce flowers

and seeds. Plants

such as fernsand mosses are

called non-

flowering plantsand produce

spores instead of

seeds.
http://www.urbanext.uiuc.edu/gpe/case4/c4facts1c.html


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Sporesare

m icroscop ic specks

of l iv ing mater ial .Ferns produce their

spores on the

undersides of theleaves (fronds).

They are the brown

"spots" or "pads" onthe bottom of the

leaves.
http://www.urbanext.uiuc.edu/gpe/glossary/spore.htmlhttp://www.urbanext.uiuc.edu/gpe/glossary/spore.html


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Some plants uses

plant parts in

order to

reproduce. We

call it asexualreproduction or

vegetative

propagation ofplants.


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Reproduction in Plants

Sexual Asexual

Pollination (self or cross)

REPRODUCTION

PLANT

Fertilization

Flowers (perfect or imperfect)

Fruits and Seeds

Seed dispersal/Germination

Seedling- young plant

VEGETATIVE

PROPAGATION

Natural Artificial


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Natural Vegetative Propagation

Natural vegetative propagation is thegrowing of new plants from parts of a

parent plantsuch as underground stems, roots and

leaves.


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Bulb

Examples: onion (sibuyas), lily, hyacinthand tulip

A bulb is consist of a short stem base with

one or more buds enclosed in many fleshyleaves, which store food.
http://hort201.tamu.edu/YouthAdventureProgram/PlantAnatomy/image025.jpg


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Corm

Examples: Gabi, Gladiola and Begonia Corm is a thick stem base with scaly

leaves at the nodes and contains stored

food.
http://koning.ecsu.ctstateu.edu/Plants_Human/vegprop/corm.gifhttp://images.google.com.ph/imgres?imgurl=http://asiaticanursery.com/images/Arisaema-ringens-corms.jpg&imgrefurl=http://asiaticanursery.com/product_info.php/products_id/444%3FosCsid%3De8db&h=316&w=400&sz=27&hl=en&start=11&tbnid=-LrJPhlw6vvBDM:&tbnh=98&tbnw=124&prev=/images%3Fq%3Dcorms%26svnum%3D10%26hl%3Den


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Tuber

Examples: Irish potato Tuberis enlarged because of stored food.

The eyes of the potato are its nodes

where buds and roots

will develop.


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Rhizome

Example: Ginger (luya), birds of paradise

Rhizome is an underground stem thatgrows horizontally near the soil surface.

Roots and buds develop at the nodes and

grow into new plants.
http://www2.ville.montreal.qc.ca/jardin/images/feuillets/division/division_rhizomes_4_r.jpg


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Runners and Stolons

Examples: Strawberry and Bermuda These stems grow horizontally above the

ground. When the node touches

the ground the roots and leaves developand a new plant grows
http://koning.ecsu.ctstateu.edu/Plants_Human/vegprop/stolon.gif


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New Plants from Roots

Plants like the turnip (or singkamas),

carrot, radish and sweet potato (kamote)have storage roots.

These roots contain food.

When planted, storage roots grow into

new plants.
http://www.mariquita.com/images/photogallery/carrots.jpghttp://www.geocities.com/NapaValley/Vineyard/9032/veggiescol/RADISHES.gif


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New Plants from the Leaves

Katakataka has leaves that produce newplants separate from the parent plant and

continue to grow.

Begonia plants have also produce new

plants from their leaves that touch the soil.
http://koning.ecsu.ctstateu.edu/Plants_Human/vegprop/epibud.gifhttp://en.wikipedia.org/wiki/Image:Kalanchoe_veg.jpg


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Artificial Vegetative Propagation

It is a method of propagatingplants develop by people who are

engaged in the production of

plants for food or decoration.


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Cutting

The cutting produces new roots, stems, or

both, and thus becomes a new plant

independent of the parent.
http://en.wikipedia.org/wiki/Roothttp://en.wikipedia.org/wiki/Stemhttp://en.wikipedia.org/wiki/Stemhttp://en.wikipedia.org/wiki/Root


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Layering

Layering is a technique forplant

propagation in which a portion of an aerial

stem is encouraged to grow roots while

still attached to the parent plant and then

removed and planted as an independent

plant.
http://en.wikipedia.org/wiki/Plant_propagationhttp://en.wikipedia.org/wiki/Plant_propagationhttp://en.wikipedia.org/wiki/Plant_stemhttp://en.wikipedia.org/wiki/Roothttp://en.wikipedia.org/wiki/Roothttp://en.wikipedia.org/wiki/Plant_stemhttp://en.wikipedia.org/wiki/Plant_propagationhttp://en.wikipedia.org/wiki/Plant_propagation


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(A)Pull branch down forsimple layer.

(B) Make wound or cutat bend.

(C) Stake tip to holdupright.

Compound layers

are suitable for

plants with long

stems or vines.


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Grafting

A branch or stem iscut from one plantcarefully and joined toanother. The branch

or stem shares thefood and water thatpasses through thestem of the mother

plant.

Grafting is done toimprove the quality ofsome plants.
http://www.cactus-mall.com/andre/graft3yr.jpghttp://www.cactus-mall.com/andre/graft1yr.jpghttp://www.cactus-mall.com/andre/graft4mo.jpghttp://www.cactus-mall.com/andre/graft2mo.jpg


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Grafting is use to:

1.speed the maturity of some plants.

2.provide strong stalk for some ornamentalplats.

3.repair a damage trunk of a tree which stopsthe flow of nutrients.
http://www.cactus-mall.com/andre/graft3yr.jpghttp://www.cactus-mall.com/andre/graft1yr.jpghttp://www.cactus-mall.com/andre/graft4mo.jpghttp://www.cactus-mall.com/andre/graft2mo.jpg


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Budding

It is done by choosingand cutting a bud fromone plant and attachingit to another plant.The bud must fit well tothe mother plant.When the bud grows

big enough it willbecome part of theplant.
http://instruct1.cit.cornell.edu/courses/hort400/4tutos/591951.jpg


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Steps 1

7654

2

1

3


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Marcotting

In marcotting, a healthy mature plant is

selected.

The bark of the plants stem is removed.

Soil must be put around the open stem

which is then wrapped with cloth, plastic or

coconut husk.

In few months time, roots will grow out of

the stem.


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http://www.bionergy.com.my/taninet/images/marcotting.jpghttp://images.google.com.ph/imgres?imgurl=http://www.socialforestry.org.vn:82/FSSP/www.socialforestry.org.vn/photos/marcotting.jpg&imgrefurl=http://www.socialforestry.org.vn:82/FSSP/www.socialforestry.org.vn/fieldbased/english/fmlg_bamboo.htm&h=163&w=250&sz=20&hl=tl&start=15&tbnid=hn2wHDmzMg8-_M:&tbnh=72&tbnw=111&prev=/images%3Fq%3Dmarcotting%26svnum%3D10%26hl%3Dtl%26sa%3DN


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Cloning

Cloning is a method of producing a new

plant using tissue of culture.

Beginning with a group of cells cut from

the part of the mother plant, thousands of

exact copies can be produced within a

short period.


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Natural Vegetative propagation

- the growing of new plants from parts of aparent plant such as underground stems,

roots and leaves.

Plants can grow from stems, roots and leaves

(Modified stem)

A. bulb

B. tuber

C. corm

D. rhizome

E. runners/ stolons


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Artificial vegetative propagation

A method of propagating plants developby people who are engaged in theproduction of plants for food or decoration.

Cutting

Grafting

Layering

Budding

Marcotting Cloning

These methods of propagation helpsimprove the quality of plants.


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asexual reproduction in plants sereddy

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