A Comparative Study on Photosynthetic Characteristics of Dryopteris fragrans and Associated Plants in Wudalianchi City,Heilongjiang Province,China  

作　　者：Chen Ling-ling Liang Yan-tao Wang He-meng Zhang Tong Bo Zhi-gang Zhao Zong-bao Chang Ying 

机构地区：[1]College of Life Sciences, Northeast Agricultural University [2]Life Science Department, Daqing Normal University

出　　处：《Journal of Northeast Agricultural University(English Edition)》2018年第1期24-32,共9页东北农业大学学报（英文版）

基　　金：Supported by Funding(Topic 31072091/C020601)from the NSFC(Natural Science Foundation of China)(2008;2010)

摘　　要：While comparing photosynthetic characteristics of Dryopteris fragrans(L.) Schott to those of several commonly associated plants in its native community, coordination between D. fragrans and its environment was observed. The diurnal net photosynthetic rate(Pn) varied dramatically for all the plants studied. D. fragrans, Woodsia ilvensis and Urtica angustifolia all exhibited unimodal type Pn variation, with low Pn, weak photosynthetic capacity, and dramatic maximal photosynthesis(Pmax) changes. When compared to values for its associated plants, D. fragrans values were of intermediate level, indicating difficulty in adapting to its environment. Moreover, the nitrate reductase activity of D. fragrans was higher than that of only one species, Artemisia gmelinii. With increasing leaf maturity and chlorophyll content, D. fragrans exhibited declining LCP(light compensation point) and a relatively low LSP(light saturation point). Because of its overall relatively weak photosynthetic capacity, D. fragrans exhibited narrow ecological amplitude with respect to light adaptation.While comparing photosynthetic characteristics of Dryopteris fragrans(L.) Schott to those of several commonly associated plants in its native community, coordination between D. fragrans and its environment was observed. The diurnal net photosynthetic rate(Pn) varied dramatically for all the plants studied. D. fragrans, Woodsia ilvensis and Urtica angustifolia all exhibited unimodal type Pn variation, with low Pn, weak photosynthetic capacity, and dramatic maximal photosynthesis(Pmax) changes. When compared to values for its associated plants, D. fragrans values were of intermediate level, indicating difficulty in adapting to its environment. Moreover, the nitrate reductase activity of D. fragrans was higher than that of only one species, Artemisia gmelinii. With increasing leaf maturity and chlorophyll content, D. fragrans exhibited declining LCP(light compensation point) and a relatively low LSP(light saturation point). Because of its overall relatively weak photosynthetic capacity, D. fragrans exhibited narrow ecological amplitude with respect to light adaptation.

关 键 词：Dryopteris fragrans(L) Schott associated plant PHOTOSYNTHESIS 

分 类 号：Q948.121[生物学—植物学]