| 不同混生地被竹光合和荧光特征比较 |
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| 引用本文： | 高贵宾,钟浩,吴志庄,吴良如,潘雁红,田新立.不同混生地被竹光合和荧光特征比较[J].福建农林大学学报(自然科学版),2016(5):515-521. |
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| 作者姓名： | 高贵宾 钟浩 吴志庄 吴良如 潘雁红 田新立 |
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| 作者单位： | 1. 国家林业局竹子研究开发中心,浙江杭州310012;浙江杭嘉湖平原森林生态系统国家定位观测研究站,浙江杭州310012;2. 国家林业局竹子研究开发中心,浙江杭州310012;浙江省竹子高效加工重点实验室,浙江杭州310012 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金资助项目(CAFYBB2014QA038)，浙江省自然科学基金资助项目(LY14C030008)，浙江省科技计划项目(2014F10047) |
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| 摘 要： | 选取11种优良混生地被竹,比较不同竹种在同质环境条件下的光合和荧光特征差异,以层次分析法评价高光效竹种,为进一步研究竹子光合生理生态适应机制及优良竹种多指标、多方位的综合评价提供依据.结果表明:(1)黄条金刚竹、铺地竹、美丽箬竹和白缟椎谷笹的净光合速率(Pn)均在14.00μmol·m-2·s-1以上,白纹阴阳竹和倭竹的Pn仅为8.10μmol·m-2·s-1左右.(2)美丽箬竹、白缟椎谷笹和黄条金刚竹等的最大光化学效率、PSⅡ实际光化学效率、光化学猝灭系数和相对电子传递速率相对较高,菲黄竹、白纹阴阳竹和倭竹等相对较低.(3)黄条金刚竹的光补偿点最低,光饱和点最高;倭竹的光补偿点最高;白纹阴阳竹的光饱和点最低;白纹阴阳竹、菲白竹和倭竹的非光化学猝灭系数和非调节性能量耗散量子产量相对较大,美丽箬竹、白缟椎谷笹、黄条金刚竹和阔叶箬竹相对较小.可见,在同质环境条件下,不同竹种的光合生产能力、光合作用效率、光利用和光适应各有差别.综合评价显示,黄条金刚竹、美丽箬竹和白缟椎谷笹等为高光效竹种,但竹种的光合生理差异还可能与长期环境选择、遗传进化及竹子生态适应性有关.
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| 关 键 词： | 混生竹 地被竹 光合特征 荧光特征 综合评价 |
Comparative study on photosynthetic and fluorescence characteristics of different amphipodial dwarf bamboo |
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| Abstract: | To elucidate adaptive mechanism of dwarf bamboo on photosynthetic and fluorescence characteristics, and establish parameters
of comprehensive evaluation for fine varieties, 11 types of amphipodial dwarf bamboo which were grown in the same condition
were selected for photosynthetic and fluorescence analysis. Results showed that: (1) all the net photosynthetic rates (Pn) of
Pleioblastus kongosanensis f. aureostriaus, Sasa argenteistriatus, Indocalamus decorus and Sasaellea glabra f. albo-striata were over
14.00 μmol·m-2·s-1, but Pn rates of Hibanobambus tranguillans f. shiroshima and Shibataea kumasasa were around 8.10 μmol·
m-2·s-1. (2) Maximum photochemical quantum yield of photosystem Ⅱ (PSII), effective photochemical quantum yield of PSII,
coefficient of photochemical fluorescence quenching and relative electron transport rate (ETR) of Indocalamus I.decorus, S.glabra f.
albo-striata, P.kongosanensis f.aureostriaus (in a descending order) were higher than Sasa auricoma, H.tranguillans f. shiroshima
and S.kumasasa; (3) P.kongosanensis f. aureostriaus had the lowest light compensation point and the highest light saturation point
while S.kumasasa had the highest light compensation point and H.tranguillans f. shiroshima had the lowest light saturation point. Coefficient
of photochemical fluorescence quenching, quantum yield of non-light induced non-photochemical fluorescence quenching of
H.tranguillans f. shiroshima, Sasa fortunei and S.kumasasa were relatively high but those of I.decorus, S.glabra f. albo-striata, P.
kongosanensis f. aureostriaus and Indocalamus latifolius were relatively low. To summarize, photosynthetic productivity and efficiency,
light utility and adaptation varied significantly among species even when they were grown in the same environment. P. kongosanensis
f. aureostriaus, I.decorus and S.glabra f. albo-striata were species of high photosynthetic efficiency. Differences in photosynthetic
characteristics of bamboo species were results of long-term environment selection, genetic evolution and ecological adaptation.
Therefore, further study might be required for thorough investigation. |
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| Keywords: | amphipodial bamboo dwarf bamboo photosynthesis characteristic fluorescence characteristic comprehensive evaluation |
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