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Photo 7 is the result after eight days. The growth of female gametophytes with the iron fertilizer was much better than those used without it in that the gametophytes were longer, bigger, and had some egg cells.
Photo 7. Results on female gamete after eight days
Photo 8 is the result after twelve days. All of them in case to use with iron fertilizer were inseminated, but only one-third in case not to use iron fertilizer was inseminated. The average cell division per spore used with the iron fertilizer was ten, but without the fertilizer was four.
Photo 8. Results after twelve days
Photos 9 and 10 are the results after 16 days using the iron fertilizer. The average cell division per spore using iron fertilizer was forty-four (Photo 9), but those without was fourteen (Photo 10).
Photo 9. Results after 16 days with iron fertilizer
Photo 10. Results after 16 days without iron fertilizer
Figure 2 shows the average number of cell per spore. The number of cells of a spore using the iron fertilizer was larger than the cells not using the fertilizer. We can see that cell division of cells using the iron fertilizer is faster than without.
Figure 2. Average number of cell per a spore of seaweed
Consideration
The number of germination on a spore of seaweed using iron fertilizer was much better than without. The growth on spore of seaweed using the iron fertilizer was much better than without. Cell division on spore of seaweed using iron fertilizer was active and much better than without. Therefore, it was actually pointed out that iron fertilizer accelerates germination, growth and cell division on spore of seaweed by the tank test.
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