Growth of the conchocelis phase of Porphyra columbina (Bangiales, Rhodophyta) at different temperatures and levels of light, nitrogen and phosphorus
Growth of the conchocelis phase of Porphyra columbina (Bangiales, Rhodophyta) at different temperatures and levels of light, nitrogen and phosphorus
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DOI：
10.1111/j.1440-1835.1995.tb00031.x
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发表时间：
1995-01-01
影响因子：
1.5
通讯作者：
Brown, Murray T.
中科院分区：
文献类型：
--
作者：
Frazer, Allen W. J.;Brown, Murray T.
Temperature, light, nitrogen and phosphorus all had significant effects on the growth of conchocelis colonies of Porphyra columbina Montagne when grown in vitro using a shell substrate. High rates of growth were recorded at 15 degree C and at 8 degree C under low light levels. These light and temperature conditions are similar to those found in the subtidal environment of southern New Zealand coastlines. Little growth occurred at 22 degree C. Nitrogen stimulated growth at concentrations far greater than are likely to be found in situ, while at concentrations of 120 mu-mol/L and above phosphorus had an inhibitory effect on growth. The culture parameters were strongly interactive in their effect on growth, in particular temperature and light. Conchosporangia formed in all treatments 14 days after alteration of the photoperiod to 10 h light: 14 h dark. Optimal conditions for culture of the conchocelis of P. columbina from southern New Zealand are a water temperature of approximately 15 degree C, light levels between 10 and 50 mu-mol m-2 s-1 and seawater nitrogen levels maintained above 100 mu-mol/L.
