Abstract
The present study was carried out to make clear the attaching mechanism of the carpospore of Porphyra tengra and to bfind out more favorable spore-collecting method in the laver field.
Oyster shells were set in the laver field as the carpospore collecters in tow different ways. 1) Oyster shells were piled up about 42cm in height in an opened tank set on the bottom. 2) Oyster shells were hung horizontally by an iron wire about 15-30cm over the bottom. The result may be sumarized as follows.
1) More conchocelis were found on the shells piled up in the tank than those hung horizontally in the sea.
2) There were scarcely any difference in the number of conchocelis betwen the shells of upper, middle, and lower part on the shell-pile.
3) The vortex or stagnation of the tidal current caused in the apparatus have influence on, accumulation of follen leaves, and consequently the accumulation of carpospores on the oyster shell. Under favorable conditions many conchocelis were found on the shell as a result of the attach ment of numerous carpospores.
