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Full Length Research Paper
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Glucosinolates within a
collection of white head cabbages (Brassica oleracea
var. capitata sub.var. alba) from Turkey
Gölge Sarıkamış1*,
Ahmet Balkaya2 and Ruhsar Yanmaz1
1Ankara
University, Faculty of Agriculture, Department of
Horticulture, 06110, Ankara, Turkey.
2Ondokuz
Mayıs University, Faculty of Agriculture, Department of
Horticulture, 55139, Samsun, Turkey.
*Corresponding author. E- mail:
golges@yahoo.com Tel.:
+90 312 5961289.
Fax: +90 312 3179119.
Accepted 18 August, 2009 |
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Abstract |
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Glucosinolates of a population of white head cabbages
collected from different geographical regions of Turkey were
determined at two different plant developmental stages (early
and late development).
The glucosinolates detected were glucoiberin, glucoraphanin,
sinigrin of aliphatics and glucobrassicin, neoglucobrassicin,
4-methoxyglucobrassicin and 4-hydroxyglucobrassicin of
indoles. Variation were observed in terms of glucosinolate
profile and levels. However, the most abundant glucosinolate
observed was glucobrassicin synthesized at significantly
high levels. While total aliphatic glucosinolate content of
genotypes ranged from
0.33 - 5.63
µmolg-1
dw and 0.46 - 16.14 µmolg-1 dw at early and late
developmental stages, respectively, in the first year, the
levels ranged from 0.05 - 7.72 µmolg-1 dw and
0.12 - 14.60 µmolg-1 dw at early and late
developmental stages, respectively, in the second
experimental year. In general, aliphatic glucosinolate
content of cabbages were low compared to indoles;
glucobrassicin in particular. The presence of glucoiberin
and glucoraphanin in almost all cabbage genotypes is
promising.
Potential individuals
synthesizing aliphatic glucosinolates together with
glucobrassicin at relatively higher levels were selected
for future breeding purposes aimed to develop novel lines
with improved health benefits.
Results suggested that both aliphatic and indole
glucosinolate levels were higher at later stages of
development.
Key
words:
Cabbage, brassica, glucosinolates, genetic resources. |
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