VEGETATIVE REPRODUCTION BY STEM

    

STD-12        UNIT-6       CHA-1

REPRODUCTION IN ORGANISMS 

VEGETATIVE

REPRODUCTION BY STEM

VEGETATIVE REPRODUCTION 

It is the formation of new plants from vegetative units or propagules such as a buds, tubers rhizomes etc..

We can classified into three Categories 

1) By Stem

2) By Root

3) By Leaf

1) VEGETATIVE REPRODUCTION  BY STEM

• Runners
• Offsets
• Stolons
• Suckers
• Rhizomes
• Bulbs
• Corms
• Tubers

Runners- These are narrow  green horizontal branches which develop at base of Chrown and root at intervals where new Crowns are also formed eg-Lawn Grass ,Centella, Oxalis

Offsets - These are one internode long runners that  occurs in some aquatic plants e.g- Eichhornia, Pista

Stolons - These are arched horizontal branches that develope at base of crown and helps in vegetative propagation like runners e.g- strawberry ,vallisneria

Suckers- These are Slender underground branches that develope from base of areal shoot, grow for some distance and form New areal shoots of crowns. e.g-  Mint, Chyrysanthemum

Rhizomes- Rhizomes are main underground stem which store food for Perennation during unfavourable condition. These have a buds for formation of new aerial shoots during favourable condition e.g- Aspidium, Adiantum 

Bulbs- Bulbs are underground condensed shoots which have one or more Buds These buds present inside the bulbs from new plans. e.g- Garlic,Narcissus,Onion.

Corms- These are unbranched swollen underground stems having a circular nodes that have buds for growth of daughter plants e.g - Amorphophallus,Colocasia,Crocus,Fressia

Tubers- These have a buds over there nodes or eyes. The buds produces new plantlets when a stem Tuber or part of it having an eyes is placed in the soil. e.g- Potato, Artichoke

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 Mail- indiabiologymanishmevada@gmail.com 

MANISH MEVADA

M.Sc,M.Phil,B.Ed

THANK YOU SO MUCH 

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