Abstract
Liberated tetraspores and carpospores of mature plants of Laurencia sp. 1 collected from Kyaikkhami (Lat. 16° 05′ N, Long. 97°34′E) and Setse (Lat. 15°52′ N, Long. 97° 8′ E) coastal areas had been cultured at temperature 25°C under 16L:8D photoperiod using PES medium in 20 ‰ salinity. The development of tetrasporelings in the laboratory cultures stopped after 30 days, whereas that of carposporelings stopped after 20 day. Both tetraspores and carpospores germinate into bipolar sporelings with erect shoot and colourless rhizoidal filaments in Laurencia sp. 1. Moreover, the germination pattern of tetraspores was similar with that of carpospores. However, the growth rate of carposporelings was slower than tetrasporelings. In the present study, the germling stages of both tetraspore and carpospore showed the Fucus type of the germination pattern. The developmental stages of tetraspore and carpospore germination of Laurencia sp. 1 were briefly described.
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