中文摘要：

对羊栖菜的生殖托在不同光照周期条件下进行离体培养，观察卵细胞的释放与受精情况，以及受精卵的发育情况，以探讨光照周期对其有性繁殖过程的影响。试验结果表明，长光照周期可以明显促进卵子的排放，延长卵子的存活时间，提高卵子的受精效率，有利于合子的发育与生长。在羊栖菜通过有性繁殖途径进行的苗种生产过程中，较长的光照周期有利于提高苗种生产效率。

英文摘要：

To examine the effect of photoperiods on sexual reproduction of sea weed Hizikia fusiformis （Harvey） Okamura （Sargassaceae, Phaeophyta）, receptacles were collected and incubated in three different light periods. The results showed that, compared to the short light period, the longer light period had positive effects on the evolution of eggs,fertilization success and development of zygotes. The author proposed that culture of the parental mature Hizikia fusiformis under longer photoperiod would be of benefit to the artificial seedlings through sexual reproduction.