海に入れたノリの“Conchocelis-phase”からの胞子の放出とヒビ立て時期

抄録

In order to get some knowledge on the shedding of spores from “Conchocelis-phase” of Porphyra tenera, oyster shells in which the Conchocelis had been cultured were set in the sea in autumn.
Everyday a part of them was taken up, kept in glass tubes till the next day in the laboratory and number of spores shed were counted under microscope.
Shedding occurs everyday from the late September to the early December.
The number of spores-shed in a day is considerablly large (200-1, 000 per 1cm² of shell) during two to three days at every spring tide, while in other days it remains very small (less than 10 per 1cm² of shell).