这种现象可能与胚珠后期败育有关。
This phenomenon was probably correlated with ovule abortion.
当胚发育最为充分而又尚未败育时取胚珠进行培养，存活胚的比例较高。
When embryos developed fully and did not abortive, ovules might be cultured, and percentage of the viable embryos was higher.
吉祥草花器官发生发育过程中出现雌蕊群发育停滞现象，以及吉祥草在小孢子及胚珠发育过程中出现败育情况，可能是吉祥草属结实率低的重要原因。
The stasis phenomenon of gynoecium development occurred in floral organogenesis of Reineckia and the abortion of microspore and ovule may be the important causes of its low seed bearing ratio.
吉祥草花器官发生发育过程中出现雌蕊群发育停滞现象，以及吉祥草在小孢子及胚珠发育过程中出现败育情况，可能是吉祥草属结实率低的重要原因。
The stasis phenomenon of gynoecium development occurred in floral organogenesis of Reineckia and the abortion of microspore and ovule may be the important causes of its low seed bearing ratio.
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