The influence of the dimension of seed crystal on the characteristics of cr
ystal growth from solution under microgravity is studied. The dimensionless
average velocity of fluid V-av, the dimensionless maximum velocity of flui
d V-max, the temperature distribution index S-theta, the concentration dist
ribution index S-phi and the dimensionless average growth rate of crystal <
(V)over bar(cg)> are calculated by only taking into account the variation o
f the solution density caused by the temperature change, that caused by the
concentration change being neglected. In certain regions of the parameter
(Ra, Pr, Sc and mu) space, some scaling laws are generated: the scales of S
-phi and <(V)over bar(cg)> are given by power functions of mu with negative
exponents. It is shown that the characteristics of crystal growth for smal
l seed crystal are different from those for large seed crystal.