Skip to main content
INTRODUCTION OF ORCHID 
Orchids are monocotyledonous, perennial herbs belonging to orchidaceae family
Orchids are accepted to world’s most exotic & fascinating flowers
Valued for their long spikes which display a variety of colours & long vase life
 Ranks first in global trade of tropical cut flowers & 13th in total cut flower trade in  international market

  ORIGIN & DISTRIBUTION
Ø  
Ø    Orchidaceae- 800 genera & 25,000 sp. 

around the world.

Ø    India is home to about 1,300 sp. (about 

800 sp. in NEH region).
Three major orchid growing regions 
in the world-
Ø
          i).  Tropical American Zone :  SE Brazil, NW 
\Bolivia, Western    Venezuela, Central America- Cattleya & Oncidium.
         
          ii). Tropical Africa :  Home to 

Angraecoides.
         
         iii). Indo- Myanmarese & Southern Asiatic

 region : The Himalayas, Myanmar, Thailand, 

Malaysia, Indonesia - Cymbidium,

Dendrobium, Vanda, Paphiopedilum & 

phalaenopsis.

         INDIA – Kerala, Western ghats, Kashmir
, North eastern hills


 Importance & economic value of Orchids
•Orchids as cut flower: At present orchids cut

 flower trade is a multi million dollar business.
•
• Phytochemicals from orchids: Several 


alkaloids are extracted from many orchids species.

                 - Dendrobine- Dendrobium Sp.
                 - Shihunine- Dendrobium nobile.
                 - Malaxine – Malaxis congesta
•
•Orchids as spice, flavoring agent & food:

      - Flavoring agent- Vanilla planifolia.
      - Roots, tubers, rhizomes- food in Asia, Africa

 

Comments

Post a Comment

Popular posts from this blog

🍀HOME GARDEN🍀 Author:- G.keerthana

HOME GARDENING  Article by :- G.keerthana . Growing your own vegetables can be fun as well as rewarding. All you need to get started is - some decent soil and few plants and this way you provide fresh healthy vegetables.         My own home garden  A good home gardening plan may include selecting the right location, determining the size of the garden, deciding upon the types and varieties of vegetables to plant.  It must be noted that there are many vegetables that can be grown in pots. How to begin with Home Gardening: Site selection. Size of the garden. Deciding on what to grow. Location of vegetables in the garden. Time for plantation. Gardening images of my own garden: Uses of Home gardening:- Improve your health. Consuming more fresh fruits and vegetables is one of the most important things you can do to stay healthy. Save money on groceries. Get outdoor exercise. Gardening is a natural stress reliever. May lower the stress...
5 comments
Read more

GRAFT OR BUD UNION Author:- S.Hemanth

Physiology of graft (or) bud union formation   Article by:- S.Hemanth A. Characteristics of a functional graft union  Mechanical strength  Initially some sticking together of scion and stock is achieved by intercellular adhesion at first and intermingling of callus subsequently, but ultimately it is the interlocking of xylem fibers (wood) that results in a strong, permanent graft union.  Translocation   The structural integrity of the graft union not only holds the grafted plant together, but it is the reestablishment of anatomical and functional continuity between xylem and phloem that allows for translocation of water and minerals by the xylem, and conduction of carbohydrates and other organics by the phloem.    B. Sequence of graft union formation  Necrotic plate  The necrotic plate is a layer of desiccated, crushed cell walls at the cut surface of both stock and scion. Suberin (a waxy material) and pectin...
Post a Comment
Read more