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Aim and Background. In order to study
the effect of drought stress
on some quantity and quality characteristics of
sugar beet genotypes a field experiment was
carried out at Agricultural Research Station of
Khoy in
2009. Materials and Methods. Treatments was arranged in strip
block experiments based on completely randomized block
design with three replications. Three sugar beet
hybrid varieties were as Rasoul, Shirin
and 7112.
Results. The results showed that the
water stress on root yield, white
sugar content, sugar content, root length, fresh and dry
weight of leaves, petioles and roots
were significant. Effects of cultivar on most
traits studied were significant, and Rasoul was
significantly higher than others of
root yield and white sugar
yield.
The interaction between cultivar and water
stress was not significant. Due to stress
and free- stress environments, Shoot fresh weight reduction showed
the water storage in cultivars is
non-equal. Decrease in shoot dry
weight and total dry weight
indicate that drought stress have
reducing affects on the growth
of shoot parts and total
dry weight.
Conclusion. Noticeable
point in the results was
that the traits sugar content
and white sugar yield, impurities of nitrogen, sodium
and potassium, and molasses sugar in two environments revealed no significant difference.