1·But boron also exhibits rapid and significant phloem mobility in species for which sorbitol, mannitol, or dulcitol are the primary photosynthates since these polyols can effectively complex boron.
而对于以山梨醇、甘露醇、半乳糖醇等多元醇为光合作用初级运输物的植物中，硼可以与多元醇形成络合物而在韧皮部中自由运输。