Abstract: The genetic parameters such as generalized hereditary capacity, genetic correlation coefficient, genetic advance and selective index in of main economic characterswere evaluated in this paper. The results showed that the plant height, thousand grain weight and technological length are higher in hereditary capacity and genetic advance and their hereditary variation variation coefficient are bigger, so that once is enough in the selection of early generation. The herebitary capacity and the genetic advance of both grain number in each capsule and flowering season are bigger, and their variation coefficients are lower, the selection also lower, the selection also should be strengthened in early generation, and augment the selective population. The plant seed number and the branches of main stem have moderate hereditary capacity an d genetic advance, and several generations should be continuously selected. The genet i c parameters of grain weight and fruiting in single plant are lower. Thus the effect of direct sellection is not very good. It is better to be indirectly selected from the characters significantly correlated with them. In particular, the indirective selection with h-igh relative efficiency could be carried out for the grain weight of single plant.

Key words: Economic characters, Genetic parameters