Three crosses between NG94-156 (brachytic stem) and three varieties (normal stem) were made, and F2 segregative population and two recombined inbred line populations(F(7:8)) were obtained. Genetic analysis indicated that the brachytic stem of NG94-156 was controlled by two duplicate recessive genes. In searching for RAPD marker linked to the genes controlling brachytic stem, 260 RAPD primers were applied to screen four parents of three combinations and RIL. Polymorphic bands revealed by the primer S-506 exhibited the best repeatability among all primers. Linkage analysis indicated the genetic distance between S-506(1600) and brachytic stem gene was 6.94 cM.
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