Tamarind monograph.pdf - Crops for the Future

Table 8.2 Accessions selected in Thailand based on RVP
Accession No. Real value of pulp (%) (RVP) Rank
87-2-01-035
87-2-0l -029
87-1-02-001
87-1-02-002
87-1-02-003
87-1-02-004
87-1-02-005
20.20
18.39
17.98
15.00
12.00
11.28
10.80
Source: Feungchan et al., 1996 a.
In this study, it was also found that excellent accessions had RVP values of
over 21 and the number of pods was about 13-15 per kilogram. Most of the
best accessions were found in provenances along the Mae Kong River, but
the role of the river in all these cases has not been fully understood. Based
on RVP values, 51 outstanding accessions are undergoing further evaluation.
Thailand is also paying attention to the percentage of tartaric acid and sugar,
the main determinants for taste and flavour. Accessions have been selected
for improvement for industrial purposes. One accession (No: 86-2-23-017)
has given the highest content of tartaric acid (up to 11.2%) and has potential
for commercial extraction of tartaric acid. Another accession (No:
86-13-008) had a sugar content of 39.9% and could be valuable for fructose
production. Yet another accession (No: 87-2-01-035) was found to give the
highest concentrated tamarind flesh and this is suitable for processing into
sauces, drinks and confectionery.
8.3.2 Philippines
Variation has been observed in fruit forms in the Philippines. Some are
oblong and short, while others are long and curved. Sweet and sour types are
found in different parts of the country. Several trees bearing sweet fruits
have been found in Cavite and Laguna. The University of the Philippines at
Los Banos long ago selected and identified sweet tamarind varieties, namely
Cavite, Batangas, Bulacan, and Laguna. These varieties have long plump
fruits with thick sweet pulp. Some of the sweet types have pods 7-10 cm
long and 2-3 cm wide, weighing 20-30g, containing thick sweet pulp with
6-7 seeds. Forty-six accessions of tamarind germplasm are presently
available in the Institute of Plant Breeding, Los Banos, Philippines.
The varietal characteristics of tamarind lines introduced from the Philippines
have been evaluated at the US Department of Agriculture, Subtropical
Horticulture Research Station at Miami, Florida (Knight, 1980) and the
station developed a cultivar called ‘Manila Sweet’.
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