2、初生壁（primary cell wall） 是细胞生长期形成的。 主要由纤维素、半纤维素、果胶和糖蛋白组成； 初生壁中果胶含量较高，结构较松散，有利于细胞壁进一步扩展...
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Pectin, the major component in the middle lamella and primary cell wall of higher plants, has a great impact on the viscosity and turbidity of fruit juices.
果胶普遍存在于各种水果中，是水果细胞中层和初生壁的主要成分，果汁中的果胶对其粘度和浊度有较大影响。
TEM images showed that cell wall of the fibre is typically divided into three layers including the primary wall (p), the middle lamellar (ML) and the secondary wall (S1, S2 and S3).
纤维细胞壁的超微结构典型地分为胞间层(ML)、初生壁(P)、次生壁外层(S1)、次生壁中层(S2)及次生壁内层(S3)。
POD was mainly distributed in the radial walls of the cambial cells and expanding xylem cell, especially at the corner of cell wall and cell wall close to the primary pit field.
形成层细胞阶段和伸展生长阶段，POD主要分布在径壁上，尤其是细胞壁角隅处和初生纹孔场附近的细胞壁。
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