摘要
对发育过程中和成熟的田菁(Sesbania canabina)种子内胚乳细胞进行了透射和扫描电镜观察。结果表明:田菁胶形成后不是分泌到胞外,而是聚积在胞内。对不同粒度田菁胶的粘度测定,表明粒度越大,粘度越小;反之,粒度越小,粘度越大。这种结果与田菁胶在细胞内定位是相一致的。另外,对不同粒度田菁胶的糖和不溶物含量也进行了测定。
The observation by transmission and scanning electronic microscopy on the endosperm cells from mature and developing seeds of Sesbania cannabina shows that the Sesbania gum after its synthesis is not secreted out of cells,it is accumulated inside the cells.The viscosity determination of different size of granules demonstrates that,the larger the size of granules, the lower the gum viscosity,on the contrary,the smaller the size,the higher the viscosity.This result is in agreement with the localization of gum inside the cells.In addition,the total con- tent of saccharide and insoluble substances for different size granules was also determined. These results provide the need of small size of gum granules in the process of production with the evidence of gum localization inside the endosperm cells of Sesbania seeds.
