栽培甜菜助细胞退化进程的超微结构观察

李伟^1,², 申家恒^2,^*, 郭德栋³

Ultrastructure of Synergid in Its Degenerative Process in Sugar Beet (Beta vulgaris)

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

图版IV A: 图版III中图C的局部放大, 示宿存助细胞的胞质Bar = 200 nm。B: 合子时期的助细胞, 箭头示合子合点端蜂窝状细胞壁Bar = 2 μm。C: 图B的局部放大, 示宿存助细胞的胞质Bar = 500 nm。D: 合子后期, 2个助细胞均退化Bar = 2 μm。
Plate IV A: Higher magnification of Figure C in plate III, showing cytoplasm of the persistant synergid Bar = 200 nm. B: Synergids at zygote stage, arrow shows cell wall at chalazal end of zygote Bar = 2 μm. C: Higher magnification of Figure B, showing persistant synergid began to degenerate Bar = 500 nm. D: Both of two synergids degenerated at late stage of zygote Bar = 2 μm.