设为首页
加入收藏
华北地区冬小麦光合作用的光响应曲线的特征参数
CHARACTERISTIC PARAMETERS OF LIGHT RESPONSE CURVES OF PHOTOSYNTHESIS OF WINTER WHEAT IN NORTH CHINA
-
摘要: 在冬小麦各生育期测定了田间叶片光合作用速率及其相应的气象要素, 拟合了各生育期的光合作用的光响应曲线.得出它们的几个特征参数:初始量子效率、最大光合速率和凸度.在华北地区冬小麦的整个生育期, 初始量子效率大多在0.050~0.075之间变化, 最大光合速率在5~25 μmol·m-2·s-1之间变化.表明初始量子效率随生育期的变化不大, 最大光合速率在营养生长期较高, 为20~25 μmol·m-2·s-1, 在生殖生长期, 随着叶片氮、磷、钾等营养元素含量的下降, 叶片的最大光合速率显著降低.Abstract: The photosynthesis rate of leaves in field and their corresponding meteorological elements are observed in each growing season of winter wheat in North China. The light response curves are fitted for each development duration, and characteristic parameters are obtained such as initial quantum efficiency, maximum photosynthesis rate and convexity. In the entire growth season of winter wheat in North China, the initial quantum efficiency varies between 0.05 and 0.075, the maximum photosynthesis rate varies between 5 and 25 μmol·m-2·s-1. It is shown that the initial quantum efficiency of each development duration does not vary much and the maximum photosynthesis rate ranges from 20 to 25 μmol·m-2·s-1 before heading duration, and decreases greatly in reproductive growth duration, with the decreasing of nitrogen, phosphorus and potassium of leaves.
-
[1] 于强, 王天铎. Simulation of the physiological responses of C3 plant leaves to environmental factors by a model which combines stomatal conductance, photosynthesis and transpiration.植物学报, 1998, 40(8): 740~754. [2] 索恩利. 植物生理的数学模型. 王天铎译. 北京: 科学出版社, 1980. 109~112. [3] Long S P, Humphries S, Falkowski P G. Photoinhibition of photosynthesis in nature. Ann. Rev. Plant. Physiol. Mol. Biol., 1994, 45: 633~662. doi: 10.1146/annurev.pp.45.060194.003221 [4] Tershima I, Saeki T. A new model for leaf photosynthesis incorporating the gradients of light environment and of photosynthetic properties of chloroplasts with in a leaf. Ann. Bot., 1985, 56: 489~499. doi: 10.1093/oxfordjournals.aob.a087034 [5] Matorin D N, Biscoe P V. A model for C3 leaves describing the dependence of net photosynthesis on irradiance. J. Exp.Bot., 1980, 120: 29~39. https://www.researchgate.net/publication/30975082_A_Model_for_C3_Leaves_Describing_the_Dependence_of_Net_Photosynthesis_on_Irradiance [6] Falk S, Leverenz J W, Sannuellon G, et al. Changes in photosystem Ⅱ fluorescence in chlanmdomonas reinhardtii exposed to increasing levels of irradiance in relationship to the photosynthetic response to light. Photos. Res., 1992, 31: 31~40. doi: 10.1007/BF00049534 [7] 陆佩玲, 于强, 刘建栋.冬小麦光合作用与蒸腾作用对环境因子的响应.地理科学进展, 1998, (增刊): 190~197. -
下载:
图(3)
计量
- 摘要浏览量: 4639
- HTML全文浏览量: 779
- PDF下载量: 2735
- 被引次数: 0
