| 摘要: |
| 本文报道了光照时间对条斑紫菜叶状体生长和单孢子的形成、放散和附着的影响。实验结果表明:(1)叶状体生长速度随光照时间的延长而加快,光照12h的快于6h和9h的;在光照6h和9h的条件下,单孢子的形成、放散和附着量较多。(2)缩光培养方面,在光照9h培养4天后移至12h光照条件时,单孢子形成、放散量为最多;延长缩光天数,单孢子量不再增多;减小缩光天数时,单孢子数量明显减少。 |
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| EFFECT OF LIGHT PERIOD ON THE GROWTH OF THALLI AND THEFORMATION, DISCHARGE AND ADHERENCE OF MONOSPORESOF PORPHYRA YEZOENSIS UEDA |
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| Abstract: |
| Experiments had been made under controlled condition in 1984 and 1985. The results obtained are summarized as follows: 1. The influence of light period on the growth of thalli. The growth of thalli increased with increasing illumination time per day. The growth of thalli were more rapid under 12:12 (L and D) light period than 9:15 and 6:18. 2. The influence of light period on the formation, discharge and adherence of monospores. 1) Monospores were mostly formed, discharged and adhered when thalli were cultivated under 6:15 (L and D) light period, few were formed, discharged and adhered under 12:12 light period. 2) A lot of monospores were formed, discharged and adhered when thalli were illuminated for 4 days under 9:15(L and D) light period. But when the illumination were prolonged to 6 days, the number of monospores were not increased. The number of monospores was no more than the control group when the illumination was decreased to 2 days. |
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