A Study on Cultivation of Petalonia fascia (Scytosiphonales, Phaeophyta) by Vegetative Regeneration

doi:2003.18.4.333

Algae > Volume 18(4); 2003 > Article

Algae 2003;18(4): 333-339. doi: https://doi.org/10.4490/ALGAE.2003.18.4.333

Kang-Hwa Lee, Jae-Hyun Cho, Jong-Ahm Shin

Jindo Fisheries Management Division, Mokpo Regional Maritime Affairs and Fisheries office, Fisheries Policy Bureau, Ministry of Maritime Affairs and Fisheries, Division of Aqualife Science, Yosu National University

ABSTRACT

To establish a cultivation method of Petalonia fascia, seeds and seedlings cultures and growth tests were performed at the Daeri aquafarm in Haeui, Shinana, Jeollanamdo, Korea. Gametes were easily released from the mature pluriocular sporangia. They developed to crustose discoidal stolons and grew to filamentous and discoidal stolons. The indoor seeding was performed by using the 100-150㎛ long fragments of stolons on Porphyra nets and the erect thalli developed from the cuttings when the seawater temperatures were 10-15℃. In the experimental cultivation in the sea, 1-2㎜ long plantlets were found after 15 days of cultivation; after two months thalli grew to their maximal size of 215-355㎜ long blades; after three months the length of thalli began to decrease due to distal disintegration and the plant color changed to yellow and epiphytic diatoms were attached on the thalli, which deteriorated the quality of products. The cultivation of P. fascia by the regeneration of filamentous-discoidal complexes was carried out successfully for the first time in Korea.

Key words: cultivation, Petalonia fascia, Scytosiphonales, vegetative regeneration