多年来,育种学家及爱好者利用传统的杂交育种及定向选择育种,培育出了大量观赏植物的新品种,但这种育种方法有其局限性:在自然条件下,植物变异频率较人类所需要的要小得多;人工诱变虽然提高了变异频率,但结果仍不够理想,且盲目性比较大;杂交育种虽然能弥补两者的不足,却也存在 Over the years, breeders and enthusiasts have used traditional hybrid breeding and selective breeding to produce a large number of new varieties of ornamental plants. However, this breeding method has its limitations. Under natural conditions, the frequency of plant mutation is higher than that of human beings Although the mutagenesis frequency is improved, the result is still not ideal and the blindness is relatively large. Though hybrid breeding can make up for the deficiency of both, it still exists