When the carpels are initiating, they connect together each other, and in the growing progress, the connected parts of carpels grow in different degree, so if the connected parts grew as fast as carpels, the pistil is syncarpous, otherwise apocarpous.

  • 雌蕊的心皮为对折心皮,雌蕊发生时基部相连,在发育的过程中,因合生部分的不同生长而形成合生心皮或离生心皮。

  • 互联网摘选 2025-01-19 23:26:52

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