Effect of environmentalfactor on conchospore releasing, attachment and germination in Pyropia dentata

To explore the suitable environmental conditions for conchospore releasing, attachment and germination in Pyropia dentata, and to provide references for production, we compared the effects of different temperatures (14 ℃, 18 ℃, 22 ℃, 26 ℃), salinities (15, 20, 25, 30, 35) and light intensities (0 lx, 3 000 lx, 6 000 lx, 9 000 lx) on the conchospores releasing, attachment and germination. The results show that the suitable conditions for conchospores releasing were temperature of 14~26 ℃, salinity of 25~30 and light intensity of 0~3 000 lx; the suitable conditions for conchospores attachment were temperature of 14~22 ℃, salinity of 25~30 and light intensity of 6 000~9 000 lx; the suitable conditions for conchospore germination were temperature of 22~26 ℃, salinity of 25~35 and light intensity of 3 000~9 000 lx.