From the Archives
of the Rare Fruit Council of Australia, inc.
Extracts from a D.P.I. Publication
Sapodilla Clonal Propagation
Achras sapote, Manilkara zapota
Side Veneer Graft
Year round if favourable growth in rootstocks, but preferably October to April.
layering for sapodilla takes more time on the tree to develop roots
than most other fruits. There may also be differences in success rates
with different varieties. Choose branches on parent trees and cincture
(remove a ring of bark) to a width of 40 to 50 mm at 600 to 900 mm from
the tip. Addition of IBA and NAA at 10,000 p.p.m. a/c may assist in
speeding up rooting.
Wait till latex is partly congealed on cincture and then wipe off and apply the IBA/NAA as talc or soaked in the peat ball.
Wrap the cincture with peat and cover with clear polythene in the normal way.
may be 3 to 5 months before roots are visible through the polythene.
When root development adequate, detach the branch in stages over two
Pot up and put in humid shaded environment, and
preferably cover foliage with a large polythene bag. Remove the bag
after 2 weeks.
particularly satisfactory due to slow root development and more
research is required. Apply rooting hormone and insert in mist bed with
bottom heat in range of 25 to 30°C.
be done either on benches adjacent to parent tree, or on the ground if
low branches available, or on potted trees. Preferably match a stock
with a scion branch of slightly smaller diameter at the point of
Cut thinly in both stock and scion (no more than
1/3rd of the diameter) for a length of 50 to 70 mm. Match and tie in
the normal way. If growth of stock and scion satisfactory, cincture the
scion below the union at 30 to 35 days. At 45 to 50 days remove the top
of the stock. At 60 to 65 days cut scion in area formerly cinctured. It
will pay to wait longer if at 60 to 65 days the scion is in an active
Remove grafted tree to shade, keep in high humidity and preferably place a polythene bag over the foliage.
stock seedlings from 9 to 18 months old with at least 10 pairs of
leaves. Scion wood should be semi- to fully-mature terminal shoots (not
in an active growth flush). Best results come from terminal scions
which have been cinctured on the parent tree for at least 30 days.
Scions should be cut to approximately 75 to 85 mm long, with all leaves
removed except for bottom halves of the top rosette of 6 to 8 leaves.
The stock is topped leaving intact at least 4 pairs of leaves below the
graft. Wedge graft as per Fig. 1 with the stock cut set obliquely and
the scion cut less on one side than the other. The long cut scion
surface faces the thicker side of the stock.
Sketches of stock and scion for wedge graft
the union with tape and then cover the scion with a polythene bag (Fig.
2). The bag should be retained until the scion commences new growth.
SIDE VENEER GRAFT
should be 9 to 18 months old, 200 to 400 mm high and with at least 10
pairs of leaves. Scions should be mature terminals, preferably
cinctured 30 days previously. Sections of non-terminal wood can also be
used if the scion branch has been cinctured.
Sketches of stock and scion for side veneer graft
scion is cut to a length of 60 to 90 mm. A thin veneer of wood some 40
to 50 mm long is cut on the stock - to a thickness no more than 1/3rd
the diameter of the stock (Fig. 3). At the bottom, this cut section is
stepped back so as to hold the scion. The scion stick is entirely
defoliated and a veneer of identical length to that on the stock cut
from the lower half of one side.
The surfaces are matched and the scion is bound to the stock with tape. The scion should be completely covered with tape.
30 to 40 days the tape is removed from the top half of the scion. If
the scion is viable then the stock is cut back to just above the scion.
The remainder of the tape is removed after the scion has started to
All rootstock growths must subsequently be removed at regular intervals.
NOTE: Particular attention should be taken to ensure that the grafting knife is kept clean and free of latex at all times.
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