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DEVELOPMENT OF UNIFORM TOMATO FRUITS IN GHANA USING PURE
LINE SELEC
TION
Osei, M.K.1, Bonsu, K. O.1, Adu
-
Gyamfi K.2, Frimpong M.1
CSIR
-
Crope research Institute
2 Afrique Link Limited, Farm and Factory, Offuman Road, Wenchi, Brong Ahafo
region, Ghana
Abstract
Tomato is Ghana's most important vegetable crop both in terms
of production and
consumption. The demand for this crop year
-
round owes to the versatility of its usage in
both fresh and processed food preparations. However, supply of tomato is irregular
because of the seasonality of production. Moreover, identifying a
nd growing the right
kind of variety for a particular season is also a big problem. Farmers in the
transitional agro
-
ecological zone have identified a tomato cultivar commonly
called “petofake" (a locally opened pollinated tom
ato) with very good attributes.
Their preference is also strongly embraced by market queens and other broad traders
who trade tomato in the Brong Ahafo region of Ghana. Despite the good attributes
exhibited by this cultivar, it has been found to be se
gregating thereby giving non
uniform fruits. Using pure line selection, 3080 plants were planted in 2011 for
observation and selections. Based on their fruit shape, fruit size, fruit colour, fruit
surface and yield, 101 plants were selecte
d. These were also planted in 2012
leading to a selection of 12 individual lines. In 2013, the 12 lines were further
evaluated at the research station. Planting involved growing each progeny into
single rows of about 12
plants in RCBD with three replications. Significant
differences were observed in the number of days to 100% flowering with no
varied differences in the number of days to first flowering and 50% flowering. The
treatments however,
showed significant differences in plant height with P082 and P000
given the tallest and shortest heights respectively. Treatment P082 produced the
highest number of marketable fruits and was notably different from treatments
P000, P
077, P035, P068 and P085. The highest average fruit weight was obtained
on P011. This was however, not varied from the other treatments except P020 and P035.
Similarly, P082 gave the highest total marketable weight but was however, not
significantly
different from all other treatments except P000, P002 and P068. This
studied has reviewed that P000 which was used as a ‘control’ performed poorly contrast
to all the other treatments in terms of number of marketable fruits, average fruit weight
and tot
al marketable fruit weight. Treatments P082, P005, P011 and P057 were
however, outstanding as far as plant height, number of marketable
fruits, average fruit
weight and total marketable fruit weights are concerned.