Effects of light and temperature on the attachment and development of Gloiopeltis tenax and Gloiopeltis furcata tetraspores
文献类型: 外文期刊
第一作者: Chen, Suwen
作者: Chen, Suwen;Wu, Jinfeng;Chen, Lixiong;Zhu, Changbo
作者机构:
关键词: Temperature;Photon flux density;Tetraspores;Attachment;Development;Gloiopeltis
期刊名称:JOURNAL OF APPLIED PHYCOLOGY ( 影响因子:3.215; 五年影响因子:3.612 )
ISSN: 0921-8971
年卷期: 2011 年 23 卷 6 期
页码:
收录情况: SCI
摘要: Two 60-day experiments were conducted to study the influence of photon flux density (PFD) and temperature on the attachment and development of Gloiopeltis tenax and Gloiopeltis furcata tetraspores. In the first experiment, tetraspores of the two Gloiopeltis species were incubated at five temperature ranges (8A degrees C, 12A degrees C, 16A degrees C, 20A degrees C, 24A degrees C) under a constant PFD of 80 mu mol photons m(-2) s(-1) with a photoperiod of 12:12. In a second experiment, tetraspores were incubated under five PFD gradients (30, 55, 80, 105, 130 mu mol photons m(-2) s(-1)) at a constant temperature of 16A degrees C with a photoperiod of 12:12. Maximum density of attached tetraspores was observed at 16A degrees C for both species. Maximum per cent of spore germinating into disc was recorded at 12-16A degrees C for G. tenax and 8-12A degrees C for G. furcata. Maximum per cent of discs producing erect axes for G. tenax and G. furcata were recorded at 24A degrees C and 20A degrees C, respectively. Light had no significant effect on tetraspore attachment and developing into disc, but it affected the growth, sprouting and survival of its discs. Under 30-55 mu mol photons m(-2) s(-1), the discs of the two species of Gloiopeltis did not form thallus until the end of the experiment. Optimum PFD range for G. tenax discs was 80-105 mu mol photons m(-2) s(-1), whilst it was 80-130 mu mol photons m(-2) s(-1) for G. furcata. Results presented in this study are expected to assist the progress of artificial seeding of Gloiopeltis.
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