以地面模拟处理辣椒干种子为试材,采用RAPD技术对辣椒染色体进行多态性检测,研究了不同剂量的物理诱变处理对辣椒产生的影响。结果表明:采用Li离子照射可以诱导辣椒发生遗传位点的改变,但是不同剂量的效应不同;采用物理进行诱变可以诱导多个性状发生改变,该方法可以产生复杂的遗传变异。 The dry seeds of pepper were simulated by ground simulation. RAPD technique was used to detect the polymorphism of pepper chromosomes. The effects of different doses of physical mutagenesis on pepper were studied. The results showed that Li ion irradiation could induce the change of genetic loci in pepper, but the effects of different doses were different. Using physical mutagenesis could induce the change of multiple traits, which could produce complex genetic variation.