杂交育种是通过种间或品种杂交,使遗传物质重组,按照人们预想的要求创造新的植物类型和品种的手段之一.这里就棉花杂交育种工作中遇到的问题谈一些看法.一、亲本遗传基础的作用选配杂交组合,只注意双亲的优良经济性状和生物学性状是不够的,必须掌握它们的遗传基础和亲合力.在杂交实践中,往往由于双亲的遗传基础差或亲合力弱,很难得 Crossbreeding is one of the means to create new plant types and varieties according to what people expect when crossing cross-species or breed breeds, reorganizing genetic material, and here’s some thoughts on the problems encountered in cotton crossbreeding. The basic role of hybrid combinations, only pay attention to the parents of the good economic and biological traits is not enough, we must master their genetic basis and affinity in the practice of hybridization, often due to poor genetic basis of parents or affinity weak rare