就我接触到的一些农作物研究上的争论性问题,从科学理论上说说我个人的看法,供参考。我是搞水稻的,因而水稻的例子多一些。但农作物毕竟有相似之处,有时候有的问题是可以举一反三的。一、远缘杂交问题经典的“精卵结合”的远缘杂交通常要遇到三大困难;一是不可交配性;二是杂交后代不孕性很高;三是杂交后代会出现“疯狂分离”现象。籼粳稻之间杂交没有第一个困难, In terms of the controversial issues that I have encountered in crop research, I would like to make my own point of view in scientific theory for reference. I am engaged in rice, rice and more examples. However, there are similarities between crops after all, and sometimes some problems can be summed up. First, the problem of distant hybridization Classic “sperm-egg hybrid” distant hybridization usually encounter three major difficulties; First, can not be mated; Second, the offspring of hybrids is very high infertility; Third, hybrid offspring will appear “crazy separation ”phenomenon. Crossing between indica and japonica is not the first difficulty,