狭叶锦鸡儿（CaraganastenophyllaPojark）胚乳发育的细胞学研究

狭叶锦鸡儿胚乳发育属核型。胚乳细胞化始于球胚期。胚囊壁具分枝状的内突生物。初始垂周壁的形成源于部分胚囊壁内突的自由生长。

The Cytological Study of the Endosperm Development in Caragana stenophylla Pojark

The endosperm development in Caragana stenophylla Pojark belongs to the nuclear type.At the globular embryo stage,the nuclear endosperm begins to cellularize.The branch like ingrowthes on the embryo sac wall are observed obviously.The partial ingrowthes extend freely to form the primary anticlinal walls.The free end of growing walls branch out and fuse with each other and form primary pariclinal walls embracing the nuclear.In the early stage of cellularization of nuclear endosperm,there are abundent Mitochondrions,vesiculae of ER and storage particles in the cytoplasm of centre of embryo sac.The free growing walls primarily formed are dual membrane structure,which are produced by the fuse of vesiculae of ER.The piles of very small vesiculae from GB and storage particles provided substance for cell wall forming,so the cellularization is finished.