4种蒿属植物的光合光响应曲线及其拟合模型  

Comparison of two photosynthesis-light response curve-fitting models of four Artemisia species

作　　者：姬明飞[1,2] 丁东粮[2] 吴寿方[2] 梁少华 邓建明[1] 

机构地区：[1]草地农业生态系统国家重点实验室兰州大学生命科学学院,甘肃兰州730000 [2]南阳师范学院生命科学与技术学院,河南南阳473061 [3]甘肃省陇南市食品药品监督管理局,甘肃陇南746000

出　　处：《草业科学》2013年第5期716-722,共7页Pratacultural Science

基　　金：国家自然基金项目(31000286;31270753);中央高校基金项目(lzujbky-2012-k23);河南省教育厅科学技术重点研究项目(13A180817);南阳师范学院科研项目(zx2012015)

摘　　要：利用直角和非直角双曲线两种拟合模型,对毛莲蒿(Artemisia vestita)、牡蒿(A.japonica)、蒙古蒿(A.mon-golica)和灰苞蒿(A.roxburghiana)4种蒿属植物的光合光响应曲线进行拟合。结果表明,1)直角双曲线拟合的α、Rd以及Lsp数值均高于非直角双曲线拟合结果,而α在两种拟合方式间表现出显著的差异性,更是直接反映出两种拟合方式在预测植物光利用策略,特别是对低光的利用策略上存在差异;2)毛莲蒿和牡蒿随着光照强度的上升表现出较大的净光合能力,同时牡蒿具有最高的表观量子效率,对光能的利用效率高于其余3个种;蒙古蒿和灰苞蒿具有较小的最大净光合能力和较低的光补偿和光饱和点。因此,在引种过程中,因考虑当地的实际情况,选取适宜的植物。The light response curve of four Artemisia species inchcding A. vestita, A. mongolidca, A. japonica and A. roxburghiana were measured, and parameters of photosynthesis-light response curve were simulated by non-rectangle hyperbolae and rectangle hyperbolae functions in this study. The results showed that α, Rd, Lsp from rectangle hyperbolae function were higher than those from mon-rectangle hyperbolae function, and there were significant differences in a of different species. These differences revealed that non-rectangle hyperbolae function might have more physiological meaning under low light condition. Furthermore, both A. vestita and A. japonica exhibited high photosynthesis capacity, but A. japonica might have higher resource utilization under low light condition. A. rnongolica and A. rox- burghiana showed lower maximum photosynthesis capacity, lower Lcp and Lsp than others. In a word, it is necessary to consider the location environmental conditions which made these plant species more useful.

关 键 词：直角双曲线 非直角双曲线 蒿属植物 光合响应曲线 

分 类 号：Q945.11[生物学—植物学]