[Photosynthetic fluorescence characteristics of floating-leaved and submersed macrophytes commonly found in Taihu Lake].
[Photosynthetic fluorescence characteristics of floating-leaved and submersed macrophytes commonly found in Taihu Lake].
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发表时间：
2009-03
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通讯作者：
Yu-zhi Song;W. Cai;B. Qin
中科院分区：
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作者：
Yu-zhi Song;W. Cai;B. Qin
采集了太湖常见的水生植物双皮藻（Trapa bispinosa）、pelymphyoides peltatum、水蛭（Vallisneria natans）和水蛭（Hydrilla verticillata），利用潜水式脉冲调幅荧光仪（Diving-PAM）原位测量了它们光系统II的最大量子产量（Fv/Fm）以及光适应和暗适应条件下的快速光曲线（rlc）。结果表明，浮叶植物双皮草和大叶草的潜在最大光合能力高于沉水植物水草和水草。测定的最大量子产率分别为0.837、0.831、0.684和0.764。在光适应条件下，双皮草和褐皮草的最大相对电子传递速率和光强半饱和点均高于褐皮草和褐皮草。
Some aquatic macrophytes commonly found in Taihu Lake, including Trapa bispinosa, Nymphyoides peltatum, Vallisneria natans, and Hydrilla verticillata were collected, and their maximal quantum yield of photosystem II (Fv/Fm) as well as the rapid light curves (RLCs) under conditions of light adaptation and dark adaptation were measured in situ by using a submersible and pulse-amplitude modulated fluorometer (Diving-PAM). The results showed that floating-leaved plants T. bispinosa and N. peltatum had higher potential maximum photosynthetic capacity than submerged macrophytes V. natans and H. verticillata. The measured maximal quantum yield of T. bispinosa, N. peltatum, V. natans, and H. verticillata was 0.837, 0.831, 0.684, and 0.764, respectively. Both the maximal relative electron transport rate and the half saturation point of light intensity of T. bispinosa and N. peltatum were higher than those of V. natans and H. verticillata, especially under the condition of light adaptation.