NDLI: Effects of temperature and irradiance on early development of Chondrus ocellatus Holm (Gigartinaceae, Rhodophyta)

Content Provider	Springer Nature Link
Author	Li, Xiao Zhao, Peng Wang, Gaoge Li, Dapeng Wang, Jicheng Duan, Delin
Copyright Year	2010
Abstract	Chondrus is a type of commercially produced red seaweed that widely used for food and carrageen extraction. Although the natural life history of the alga had been well understood, the factors influencing development of the tetraspore and carpospore remain poorly understood. In the perspective of seedling resources, the regulation of early development is crucial for the seedling nursing; therefore, it is necessary to understand the physiological influences during its early development. In this study, we studied the effects of temperature and irradiance on the early development of Chondrus ocellatus Holm under laboratory conditions. The released tetraspores and carpospores were cultivated at different temperatures (10–28°C) and irradiances (10, 60 μmol photons m−2s−1) with a photoperiod of 12L:12D. The results indicate that both tetraspores and carpospores are tolerant to temperatures of 10–25°C, and have the highest relative growth rate at 20°C. Irradiance variances influenced the growth of the discoid crusts, and the influence was more significant with increasing temperature; 60 μmol photons m−2s−1 was more suitable than 10 μmol photons m−2s−1. The optimum temperature and irradiance for the development of seedlings was 20°C and 60 μmol photons m−2s−1, respectively.
Starting Page	508
Ending Page	513
Page Count	6
File Format	PDF
ISSN	02544059
Journal	Chinese Journal of Oceanology and Limnology
Volume Number	28
Issue Number	3
e-ISSN	19935005
Language	English
Publisher	SP Science Press
Publisher Date	2010-05-20
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	Chondrus ocellatus temperature irradiance early development Oceanography
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Oceanography

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