栽培甜菜中央细胞受精前后的超微结构

李伟^1,², 申家恒^2,^*, 郭德栋³

Ultrastructure of Central Cell before and after Fertilization in Sugar Beet (Beta vulgaris)

LI Wei^1,², SHEN Jia-Heng^2,^*, GUO De-Dong³

图版IV 初生胚乳核及胚乳游离核阶段中央细胞的结构 A: 授粉后约17 h胚囊的半薄切片, 示初生胚乳核Bar = 10 μm; B~E: 授粉后约17 h中央细胞的超微结构, 图B示初生胚乳核Bar = 2 μm; C~D: 核膜包围部分细胞质图C, Bar = 1 μm; 图D, Bar = 500 nm; E: 核周围胞质中的质体Bar = 1 μm。F~H: 初生胚乳核分裂中期的超微结构, 图F示初生胚乳核分裂中期Bar = 5 μm; 图G示周围胞质中的质体、线粒体和高尔基体Bar = 1 μm; 图H示核膜崩解为许多囊泡状结构Bar = 500 nm; I~J: 初生胚乳核分裂后期的超微结构, 图I示初生胚乳核分裂后期Bar = 2 μm; 图J示周围胞质中滑面内质网增多Bar = 500 nm; K~M: 胚乳游离核阶段的超微结构, 图K示胚乳游离核Bar = 2 μm; 图L示核周围胞质, 质体含淀粉粒Bar = 1 μm; 图M示核周围胞质中的内质网, 高尔基体分泌小泡Bar = 200 nm。
Plate IV Structure of central cell at the stage of primary endosperm nucleus and free nuclei A: semi-thin section of embryo sac approximately 17 hours after pollination, showing primary endosperm nucleus Bar = 10 μm. B–E: Ultrastructure of central cell approximately 17 hours after pollination; B: primary endosperm nucleus Bar = 2 μm; C–D: cytoplasm surrounded by nuclear membrane C, Bar = 1 μm; D, Bar = 500 nm; E: plastid around primary endosperm nuclear Bar=1 μm; F–H: ultrastructure of primary endosperm nucleus during metaphase division; F: metaphase division Bar = 5 μm; G: plastids, mitochondria and Golgi in the surrounding cytoplasm Bar = 1 μm; H: nuclear membrane disintegrated into small vesicles Bar = 500 nm; I–J: ultrastructure of primary endosperm nucleus during anaphase; I: anaphase division Bar = 2 μm; J: smooth endoplasmic reticulum increase Bar = 500 nm; K–M: ultrastructure of free nuclei stage; K: free nuclei Bar = 2 μm; L: cytoplasm surrounding nucleus, plastids containing starch grain Bar =1 μm; M: endoplasmic reticulum and Golgi secretory vesicles Bar = 200 nm.