We
also
found
an
association
of
fruit
size
with
fruit
shape
and
ribbing
.
Thus,
the
higher
the
mean
fruit
weight
of
a
variety,
the
higher
proportion
of
flattened
vs
.
round
fruits
.
In
the
same
way,
the
frequency
of
intermediate
-
strong
ribbing
(2
-
3)
was
higher
in
big
-
sized
varieties
than
in
small
-
sized
ones
.
Because
of
that,
there
are
no
varieties
with
ribbed
fruits
and
mean
fruit
weight
lower
than
30
g
.
In
the
same
w
s
were
usually
small
-
fruited
(<55
g)
.
In
addition,
several
varieties
yielded
pseudofruits,
suggesting
they
are
adapted
to
short
growing
seasons
w
Although
we
found
veral
of
them
(in
particular
fruit
color)
show
a
mono
or
oligogenic
control
.
Therefore,
despite
the
variation
obse
he
species
suffered
in
the
process
of
introduction
fro
urop
ite
their
un
nable
,
t
ight
be
narrow
.
Literature
cited
IPGRI
1996
.
Descripto
Genetic
Resources
Institute,
Male,
C
.
J
.
1
h
garden
.
Workman
Publishing
any
ork
Nuez,
F
.
1995
.
Desarroll
pp
.
625
-
669
.
In:
F
.
Nuez
(ed
.
)
.
El
cultivo
del
t
mate
.
s
Rick,
C
.
M
.
1978
.
The
tom
ay,
“yellow”
varietie
ith
cold
periods
.
a
high
degree
of
variation
for
the
fruit
traits
we
studied,
se
rved,
t
genetic
bottleneck
that
this
m
E
e
to
North
America
(Rick,
1978)
suggests
that,
desp
questio
value
he
genetic
base
of
North
American
heirloom
varieties
m
rs
for
tomato
(
Lycopersicon
spp
.
)
.
International
Plant
Rome
.
for
the
American
999
.
100
,
eirloom
tomatoes
Comp
New
Y
.
o
de
nuevos
cultivares,
o
Mundi
-
Pren
a,
Madrid
.
ato
.
Scientific
American
239:76
-
87
.
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