Cultured for 5 days in a B? deficient solution, the anatomical structure of root tip of the inefficient cultivar was destroyed seriously, its root cap was disappeared, the root tip was enlarged, and the tip cells disformed and disarranged.

• 营养液培养条件下缺硼 5天 ,敏感品种根系生长严重受阻 ,根尖解剖结构破坏 ,根冠脱落 ,根尖膨大 ,细胞畸形且排列紊乱 ;