水稻的小孢子发育，通常都能看到有二次孢壁下陷过程，称之为第一和第二收缩期。
It is well known that there are twice failings of microspore wall called first and second contraction phases individually in the rice microspore development.
本文报道了用光学显微镜和扫描电子显微镜对葫芦藓孢子形态、孢壁及纹饰等较详细观察的结果。
This paper deals with observation by light and scanning electron microscope on the spore morphology. sporoderm structure and spore-surface ornamental design of Funaria hygrometrica.
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