引言在减数分裂、杂交授粉或受精作用的同时,通过遗传基因的重新组合可以使自然界的植物得到改良和进化。由于严格的自然障碍使杂交受精作用只能在亲缘关系最近的种间进行,所以这种基因重组也就受到了严格的限制。因此,重要而很有用的基因一般从一个种不可能转移到另一个种上。从农民开 INTRODUCTION Plants of nature can be improved and evolved through recombination of genes while meiosis, cross pollination or fertilization. Because of the rigorous nature of the barrier so that the role of hybridization can only be carried out in the closest kinship, so the genetic recombination will be severely restricted. Therefore, important and useful genes are generally not transferred from one species to another species. From peasants open