实验结果从理论、细胞学和实践上表明,phlb基因在小麦品种间杂交通过诱导部分同源染色体配对形成多价体后产生染色体数目的增减和结构的变异(重组、易位和倒位等)增加性状遗传变异类型和幅度,从中能选育出一般品种间很难或不能得到的优异材料(品种)。但是phlb基因的遗传背景是农艺性状差的中国春,不利于phlb基因在育种上 The results of the experiment show that the phlb gene in hybridization between wheat varieties induces the increase and decrease of the number of chromosomes and the structural variation (recombination, translocation and inversion etc.) by inducing the pairing of homologous chromosomes to form multivalent bodies ) To increase the types and amplitudes of genetic variations in traits, from which excellent materials (varieties) that are difficult or impossible to obtain between common varieties can be selected. However, the genetic background of the phlb gene is a Chinese spring with poor agronomic traits, which is detrimental to the phlb gene in breeding