Transcript RLO Mass Production of Ornamental Herbs

Introduction
• Ornamental Herbs are important in retail nurseries as they can
attract large number of customers.
• Ornamental plants are small in size and can be planted in pots
and indoors.
• Ornamental herbs are mostly used in landscape garden as
hedges, edges, cover crops, flower beds etc.
• Ornamental herbs are propagated by different methods like
Seeds, cuttings, runners, bulbs, corms, suckers as main
methods of mass production in herbs.
Propagation of Ornamental Herbs
• Suckers
Gerbera
• Crowns
Ornamental Pineapple
• Bulbs
Tuberose
• Corms
Gladiolus
• Tuber
Begonia.
• Rhizomes
Canna, Ferns
• Runners
Sweet Violet
• Stolons
Chlorophytum sp.
• Cuttings
Hibiscus, Duranta
• Seeds
Petunia, Marigold
Suckers:
• Suckers
are
lateral
branches
developing from underground parts of
the stem or roots in the soil.
• Gerbera produces numerous suckers,
which can be split into many individual
plants.
• While separating the sucker plant,
care must be taken to allow each
sucker with some roots attached to it.
Separation of Gerbera Suckers
Crowns:
• ‘Crown’ is basal part of the plant
stem below soil surface.
• Crowns can produce new plantlets
with independent shoot and root
systems.
• Division of crown is a important
method of propagation in herbs like
Crown of Pineapple
ornamental pineapples.
Bulbs:
• Bulb is a specialized underground organ consisting a short,
fleshy, apical growing point, enclosed by thick fleshy scales.
• outer scales of bulb are fleshy & contain reserve food materials.
e.g. Tuberose, Bulbous Iris.
• Bulbs are produced by monocotyledonous ornamental plants.
Bulbs of Tuberose
Single Bulb of Tuberose
Corms:
• Corm is the swollen basal part of a stem whose axis is enclosed by
dry and scale like leaves. E.g. Gladiolus
• Corm is solid stem structure with nodes & internodes. Corm consist
of food reserves.
Gladiolus Corms
Tubers:
• Tuber is the short terminal portion of underground stem. Food
accumulates in tubers which causes thickening of the stem.
• Tubers produce buds which grow into new plant under favorable
conditions.
• Begonia is an Ornamental herb propagated by Tubers
Begonia Tubers
Begonia Plant
Rhizomes:
• Rhizome is horizontal stem growing under or sub soil surface
showing nodes and internodes like aerial stems.
•
Rhizome is main axis of the plant, producing roots on its lower
surface whereas leaves & flowering shoots above the ground.
• Canna is an ornamental herb propagated by rhizomes
Rhizome of Canna
Canna sp.
Runners:
• Runner is a specialized stem
which develops from the axial of
a leaf at the crown.
• Runners grow horizontally along
the ground & forms a new plant
at each nodes.
Plant Propagating by Runners.
• Ornamental plants Violets (Viola
sp) propagated by runners.
Stolons:
• Stolon is horizontally growing stems
which produce adventitious roots
when they come in contact with the
soil / growing medium.
• Chlorophytum
is
an
important
ornamental herb which can be
propagated by stolons.
Chlorophytum propagation using Stolon
Cutting:
•
Stem cuttings with few buds can be propagated by placing
them under favorable conditions to develop a plant which
resemble the parent.
•
Propagation by Cutting method is commonly used in hard
wood plants, which cost effective, quick and cheaper.
•
The plants like Hibiscus, Rose, Duranta, Acalypha are
commercially propagated by cuttings.
Cutting:
Propagation of Hibiscus by Cutting
Seeds:
Seed is sexual method of plant
propagation.
Direct Seeding: Seeds are planted
directly into soil for germination.
e. g. : Gomphrena
Indirect Seeding: Seeds sown
under protected conditions, allowed
to germinate and then transplanted
outdoors into permanent location.
e.g. Petunia
Petunia Plant Grown by Seeds