缺硼的萝卜,肉质根几乎不膨大,表面粗糙,内部呈水浸状,淡褐色。叶和根中硫氰酸根离子的含量分别比硼充足的萝卜高200％和5％,叶片中的还原糖含量高100％,但根中的还原糖含量显著减少。硼是酚的生物合成调节剂。缺硼的萝卜中硫氰酸盐一类次生代谢物增加,说明确是硼调节了硫氯酸盐前体的生物合成。这是十分重要 Boron deficiency radish, fleshy roots almost swollen, rough surface, the internal was flooded, light brown. The contents of thiocyanate ions in leaves and roots were 200% and 5% higher than that in boron-rich carrots and 100% in reducing sugars, respectively. However, the content of reducing sugars in roots was significantly reduced. Boron is a phenol biosynthesis regulator. A secondary metabolite such as thiocyanate in boron-deficient radish increases, indicating that boron is indeed regulating the biosynthesis of the chlor-chloride precursor. This is very important