Transcript RLO Importance of Plant Propagation in Horticulture

Introduction
•
Plant propagation is the process of generating new plants from
a variety of sources like seeds, cuttings, bulbs, corms, leaves,
roots, etc.
• Plant propagation also refer to the artificial and
natural
transportation and dispersal of seeds and plant parts and
offspring.
• Plant propagation is essential for production and development of
new plants in any horticulture nursery.
Importance of Plant Propagation
• Plant propagation helps to produce large number of
offspring's in short time and with minimum mortality.
• Plant propagation is necessary for production of new breeds
or varieties of plants which have better genetic constitution
and improved quality and quantity of the produce.
• Exact genetic replica of the mother plants can be produced
in vegetative plant propagation.
Methods of Plant Propagation
Mass Propagation
Sexual
Asexual
Parts of 1 plant
Bulbs,
corms,
etc
Rhizomes
tubers,
etc
Parts of 2 Plants
Cuttings
Stem
Root
Grafting
Budding
Layering
Seeds
Importance of Vegetative Propagation
• Vegetative propagation is method of production of new plants from
the vegetative parts of the mother plant like, leaves, stem, roots.
• Fertilization does not occur in vegetative production and therefore
the new offspring's are genetic replicas of the mother plants, used
to retain quantitative and qualitative traits of the mother plant s.
• Vegetative propagation is used in case of seedless plants and
plants which are difficult to propagate by seed.
Limitations of Vegetative Propagation
• Qualitative and quantitative improvement in next generation is
not possible by vegetative propagation method. Propagation of
plants by these methods is expensive and requires technical
skill and expertise.
• Plants propagated by vegetative means gradually lose their
vigor as there is no genetic variation. They becomes more
prone to pest and diseases attack than plants grown by sexual
methods.
Importance of Sexual Propagation
• Sexual propagation is method of producing new plants from seeds,
which are produced from the process of fertilization. Seeds are the
only means of sexual propagation.
• This propagation method is very useful for bringing about genetic
improvement in plants with respect to quality and quantity of yield.
•
Sexual propagation is necessary for crop improvement and
development of new varieties and hybrids. It is economical, as large
number of offspring's are produced in a very short time.
Limitations of Sexual Propagation
• Hybrids propagated by this method cannot produce true to
type offspring's and they may loose their
traits and
characteristics.
• Some plants like Seedless Grapes, Papaya, Peppermint are
difficult to propagate by this method as they do not produce
seeds or the seeds are not viable.
• Orchids and bamboo plants produce seeds which are viable
for very short time or are difficult to germinate and produce .