Transfer cells were widely distributed in cotyledon tissue this period which a lot of substance accumulation.Transfer cells occur first in final and edgeways of vascular bundle.

 
  • 子叶组织中传递细胞在物质积累盛期也分布广泛,传递细胞首先发生于维管束的末端和边缘,其细胞壁内突,显极性生长。
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