裁培黑麦 Ailes(Secale cereale L.)所表现出的相互易位结构杂合体的频率(15—20%)相当稳定。这种染色体结构在个体范围内是稳定并一致的,多态性是7条染色体中至少涉及到5条染色体的许多不同的相互易位的结果。试验资料已证明了突变体选择平衡理论的假设; The frequencies of reciprocal translocation hybrids (15-20%) exhibited by Ailes (Secale cereale L.) are quite stable. This chromosomal structure is stable and consistent across the individual and polymorphism is the result of many different reciprocal translocations involving at least 5 chromosomes in seven chromosomes. Experimental data have demonstrated the hypothesis of mutant selection equilibrium theory;