nursery production of fruit crops: definition of rootstocks and scion

1. COLLEGE OF AGRICULTURE, RAIGARH
Nursery production of fruit crops: Definition of rootstock
and scion, types of rootstock, characteristics of an ideal
rootstocks.
Presentation
on
Presented To:
Mr. D. PATEL
DEPTT. OF HORTICULTURE
Presented By:
LAXMI MAHARATHI
4TH YEAR 2ND SEM
AFFILIATED TO
IGKV RAIPUR

2. CONTENTS
 INTRODUCTION
 DEFINITION OF ROOTSTOCKS AND SCION
 TYPES OF ROOTSTOCK
 CHARACTERISTICS OF AN IDEAL ROOTSTOCK
 REFERENCES

3. INTRODUCTION
Rootstock:-
 A fruit tree rootstock is the stump
of a related species which
already has an established,
healthy root system, and to which
a separate fruit tree is joined by
grafting or budding (thomas and
morgan).
 The resulting fruit tree will be
Stronger, quicker to establish and
Will take on the desirable features
Of the rootstock itself.

4. Rootstock?
 Rootstock is the lower portion of the graft which
develops into the root system of the grafted
plant.
 A rootstock may be a seedling, a rooted cutting
or a layered plant.
 It is also described a plant which already has an
established healthy root system on to which a
cutting or bud from another plant is grafted.

5. Rootstock? Cont…
 The plant part grafted on to the rootstock is
usually called as scion.
 Rootstocks are being used in plant propagation
for more than 20 centuries.
 The rootstock may be a same or different
species from the scion.
 The use of rootstock is most commonly
associated with fruit plants.

6. Scion?
 The scion is the part of the grafted plant that will
produce the plant's shoots. It will, in the future,
give rise to all of the plant's leaves, stems,
flowers, and fruits.
 The plant part grafted on to the rootstock is
usually called the scion. The scion is the plant
that has the properties that propagator desires
above ground, including the photosynthetic
activity and the fruit or decorative properties.

7. TYPES OF ROOTSTOCK
1. Seedling rootstock :-
 These are developed from seeds.
 These rootstocks are relatively simple and
economical to produce.
 Root system developed by seedlings tend to be
deeper.
 These are mostly used for tropical and sub-
tropical fruit crops.

8. Seedling rootstock Cont…
 Seedling rootstocks have an advantage that the
plants don't retain viruses occurring in their
parent plants.
 Seedling rootstocks have a disadvantage of
genetic variation which may lead to variation in
performance of scion.

9. 2. Clonal rootstock :-
 Rootstocks propagated vegetatively are known
as clonal rootstocks.
 These also include those propagated through
azygotic seeds (parthenogentic, polyembryonic
and apomictic seeds).
 Each clonal individual plant is genetically same
and have identical growth characteristics in a
given environment (Hartmann et al, 2002).

10. Clonal rootstock Cont…
 Major disadvantage of clonal rootstocks is that,
they retain the viruses occurring in the parent
plants.
 These are available in majority for temperate
fruits.

11. CHARACTERISTICS OF AN IDEAL ROOTSTOCK
 It should exhibit a high degree of compatibility
with scion cultivars and give maximum life to
trees.
 It should be well adapted to agro-climatic
conditions of the particular locality like frost,
cold and heat.
 Should be resistant to disease and pests
prevalent in the concerned area.
 Should be tolerant to adverse soil conditions like
salt and drought.

12. CHARACTERISTICS OF AN IDEAL ROOTSTOCK
Cont…
 Must exhibit favorable and positive influence on
the performance, bearing and quality of scion
variety.
 Should possess good nursery characteristics like
germination, high degree of polyembryony,
ability to attain graft-able size in short period
and free from excessive branching.

13. References
 Banerjee, A.K. 1987. Nursery manual for species
commonly used in social forestry in India, Rep:
National Wasteland Development Board/00I
/007/1987, Kapoor press, New Delhi, p 64.
 Bhimraj Bhujbal (ed.). 2012. Resource book on
horticulture nursery management, YCMOU,
NAIP, ICAR, p 264.