我在本文中所要提出的,是在果樹雜交中所得到的一些事實,它們无可置辯地證實了:把那討厭的孟德爾定律應用到多年生果樹底雜交上去,是完全不相宜的。五年之前,我在“由種子所培植的果樹底新品種之產生”一文中早已說過:根據我在這方面多年的經驗,要藉着人工雜交而從不同的果樹品種間获得有某種一定性格的雜種小植物,簡直是件不可能的事;更不要说什麼在第二或第三代植物中能可靠地預測,會有多少幼苗在類型 What I am proposing in this article is the facts obtained in the cross of fruit trees. They indisputably prove that it is totally unfavorable to apply that pesky Mendelian law to the hybrid of perennial fruit trees. Five years ago, I said in the article “The emergence of new varieties of fruit trees cultivated by seeds”: According to my many years of experience in this field, we need to get some kind of fruit from different fruit varieties through artificial hybridization. A hybrid plant with a certain personality is simply impossible; not to mention what can be reliably predicted in second or third-generation plants, how many seedlings will be in the type