现今,研究根系最有效的新方法,是培养断根的方法。这种方法是把无菌条件下由消毒种子长出的幼根切成小段,放入无菌的、含大量和微量无机盐、糖和少量维生素的人工培养基中,使其生长,形成侧根,逐渐具有该种植物所固有的根系外形。经一周或稍长一些时间,把基部切除,剩余的根系分成长10—15毫米的小段,放入新鲜的培养基中,任其较长期地生长。待长出侧根,再把它切成长10—15毫米的小段,在完全无菌条件下,移入同样新鲜 Nowadays, the most effective new method to study the root system is to cultivate the root method. This method is to cut sterile roots of sterile young roots into small pieces, into a sterile, containing large amounts and trace inorganic salts, sugar and a small amount of vitamins in the growth medium, the formation of lateral roots , Gradually with the plant’s inherent root shape. After a week or slightly longer, the base is excised and the remaining roots are divided into 10-15 mm segments and placed in fresh medium for longer term growth. To grow a lateral root, then cut it into small segments of 10-15 mm, under complete aseptic conditions, into the same fresh