本文对芸薹种（ brASSICA CA M PESTrIS ，2n ＝ 20） 蔬菜基因组 d n A 进行了 r A P d 初步分析， 并就 r A P d- P C r 反应条件的优化进行了探讨。结果表明：各个亚种或变种的品种之间存在着丰富的遗传多样性。In this paper some studies on the genetic polymorphisms in vegetable crops of Brassica campestris (2n=20) by RAPD were conducted , meanwhile some discussions about the modification of RAPD-PCR were given.The study results indicated there were abundant genetic polymorphisms among the cultivars in different subspecies and varieties
