Acropetal differentiation of the cambium layer continues as the primary root elongates.

形成层的向顶分化像初生根伸长一样在继续进。

Interfascicular cambium A single layer of actively dividing cells between the vascular bundles in stems.

形成层是位于茎的维管的有旺盛分裂能力的一层细胞。

Bark The outermost tissue of the stem and roots in woody plants, on the outside of the phellogen (cork cambium).

木中的茎或根中木栓形成层外方的全部组织，称为树皮。

The results showed that the prime symptoms of the TPD include laticifer necrosis and cambium-like meristem formation that occurs around the necrotic laticifer in the inner bark.

结果表明该病的基症状是在树皮内层发生乳管坏死和在坏死的乳管周围产生形成层状分生组织。