作 者：
高贵宾;钟浩;吴志庄;吴良如;潘雁红;田新立
关键词：
混生竹;地被竹;光合特征;荧光特征;综合评价
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.
译 名：
Comparative study on photosynthetic and fluorescence characteristics of different amphipodial dwarf bamboo
作 者：
GAO Guibin;ZHONG Hao;WU Zhizhuang;WU Liangru;PAN Yanhong;TIAN Xinli;China National Bamboo Research Center;National Long-term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain;Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province;
关键词：
amphipodial bamboo;;dwarf bamboo;;photosynthesis characteristic;;fluorescence characteristic;;comprehensive evaluation
摘 要：
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 over14. 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.
