Photosynthetic characteristics of the economic brown seaweed Hizikia fusiforme (Sargassaceae, Phaeophyta), with special reference to its “leaf” and receptacle
Photosynthetic characteristics of the economic brown seaweed Hizikia fusiforme (Sargassaceae, Phaeophyta), with special reference to its “leaf” and receptacle
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DOI：
10.1007/s10811-005-5768-0
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发表时间：
2005-05
影响因子：
3.3
通讯作者：
D. Zou;K. Gao
中科院分区：
文献类型：
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作者：
D. Zou;K. Gao
比较了来自中国汕头南澳岛的海藻 Hizikia fusiforme(Harvey) Okamura（马尾藻科，褐藻门）2 月（营养阶段）和 5 月（繁殖阶段）“叶子”和花托对辐照度和温度的光合反应。以鲜重计，容器中的辐照饱和光合作用 (Pmax) 显着高于“叶子”，并且在环境海水温度下，“叶子”在 5 月的光合作用高于 2 月。对于“叶子”和容器来说，Pmax 的最适温度均为 30∘C，比环境海水温度高 5-10∘C。在测试温度 10–40°C 范围内，容器的表观光合效率高于“叶子”。 “叶子”和容器的饱和光合作用的辐照度与温度相关，在 30∘C 时具有最高值（约 200μmolphotonsm−2s−1）。
Photosynthetic responses to irradiance and temperature of “leaves” and receptacles were compared in February (vegetative stage) and May (reproductive stage) in the seaweed,Hizikia fusiforme(Harvey) Okamura (Sargassaceae, Phaeophyta) from Nanao Island, Shantou, China. Irradiance-saturated photosynthesis (Pmax) was significantly higher in receptacles than in “leaves” on a fresh weight basis, and that of “leaves” was greater in May than in February at ambient seawater temperatures. The optimum temperature forPmaxwas 30∘C for both “leaves” and receptacles, being 5–10∘C higher than the ambient seawater temperature. The apparent photosynthetic efficiencies were greater in receptacles than in “leaves” within the tested temperature range of 10–40∘C. The irradiance for saturating photosynthesis for both “leaves” and receptacles was temperature-dependent, with the highest values (about 200μmolphotonsm−2s−1) at 30∘C.