G5 – Gusocora Mid Maturing valencia
• The Gusocora valencia was discovered
in Malelane and is the property of
Mr. Van Veijeren.
• The Gusocora valencia is protected by
the Plant Breeders’ Right in terms of
the Plant Breeders’ Rights Act, No. 15 of
1976 (as revised), which prohibits illegal
propagation (PBR No. ZA 20083874).
• The Gusocora valencia can be marketed
under the Seedless Valencia Quality
Standard or asa normal valencia as they
are seedless and therefore conform to the
export standards of both.
Origin and use
The origin of the Gusocora valencia is a
natural mutation in an Old clone valencia
orchard (Orchard G5) in the Malelane
area of Mpumalanga.
The Gusocora valencia was selected for
its seedlessness, good production and fruit
size in comparison with the other valencia
types. Gusocora is similar to the Delta
valencia, but bears more consistently from
year to year.
Fruit Characteristics
The fruit size is usually medium to
large, and compares favourably with
Delta valencia.
The ripening time is slightly earlier
than Delta valencia. However, the fruit
‘hangs’ well due to its firmness and high
internal quality.
The fruit shape is predominantly rounded
and the fruit are seedless. The peel is
smooth and develops a deep orange blush
if left to hang on the tree. The fruit are juicy
with a high internal fruit quality.
Tree characteristics
The tree characteristics of the Gusocora
valencia are similar to Delta valencias but
not as vigorous. Production is superior
compared to Delta valencia (compared
over a 10 year period).
The Gusocora valencia is compatible with
various rootstocks; trifoliate rootstocks
like Troyer and Carrizo citrange, Swingle
citrumelo, Rough lemon and Volkameriana.
Climate requirements
The climate requirements of the Gusocora
valencia are similar to those of other
valencia types, but it is especially suited to
warmer areas where fruit set is a problem
with the Delta valencia.
Internal fruit quality
Leaf shape
Fruit shape
G5 – Gusocora Mid Maturing valencia: Technical information
Hybrid
Natural Mutation from old clone valencia
Origin
Malelane, Mpumalanga, South Africa
Ownership
G. Van Veijeren
Selected
1997
PBR registration
ZA 20083874
Status
Commercial
Internal quality tests
Test date
Juice %
Brix %
T.Acid %
Brix /
TA Ratio
53.6
12.0
1.05
11.4
11 July
Optimum ripening date
Hot inland areas: mid July to
end August
Alternate bearing or
other problems
Alternate bearing is less of a
problem compared to Delta valencia.
Production over an 8 year period is as
follows;
0-2 years – 0 kg
3 years – 6 t/ha
4 years – 13 t/ha
5 years – 39 t/ha
6 years – 53 t/ha
7 years – 47 t/ha
8 years – 55 t/ha
Rootstocks used in
evaluation
Carrizo citrange and Swingle
citrumelo
Tree characteristics
Similar to Delta valencia but trees are
slightly smaller in size.
Fruit size
Range from medium to large
(68mm – 82mm)
Fruit shape
Round to slightly oblong with a small neck.
External appearance
Smooth rind, firm fruit
Internal appearance
Orange colour with even segments
Peelability
Moderate
Seed
Seedless
Flavour
Juicy with a good flavour
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